Umbral crítico de administración en pacientes con trauma severo y reanimación endovascular: ¿Un concepto útil? / Critical Administration Threshold in severe trauma patients and endovascular resuscitation: A useful concept?

Introducción. Se describe la utilidad del umbral crítico de administración (CAT por su denominación en inglés) como herramienta para la reanimación hemostática en pacientes con trauma severo y oclusión endovascular aórtica. Métodos. Revisión retrospectiva de pacientes adultos con hemorragia por trauma, con o sin oclusión endovascular aórtica (REBOA), atendidos entre enero de 2015 y junio de 2020, en un centro de trauma nivel I en Cali, Colombia. Se registraron variables demográficas, severidad del trauma, estado clínico, requerimiento transfusional, tiempo hasta CAT+ y CAT alcanzado (1, 2 ó 3). Resultados. Se incluyeron 93 pacientes, se utilizó REBOA en 36 y manejo tradicional en 57. El grupo REBOA presentó mayor volumen de sangrado (mediana de 3000 ml, RIC: 1950-3625 ml) frente al grupo control (mediana de1500 ml, RIC: 700-2975ml) (p<0,001) y mayor cantidad de glóbulos rojos transfundidos en las primeras 6 horas (mediana de 5, RIC:4-9); p=0,015 y en las primeras 24 horas (mediana de 6, RIC: 4-11); p=0,005. No hubo diferencias estadísticamente significativas en número de pacientes CAT+ entre grupos o tiempo hasta alcanzarlo. Sin embargo, el estado CAT+ durante los primeros 30 minutos de la cirugía fue mayor en grupo REBOA (24/36, 66,7 %) frente al grupo control (17/57, 29,8 %; p=0,001), teniendo este mayor tasa de mortalidad intrahospitalaria frente a los pacientes CAT-. Conclusión. El umbral crítico de administración es una herramienta útil en la reanimación hemostática de pacientes con trauma y REBOA, que podría predecir mortalidad precoz.

Introduction. The objective is to describe the utility of the Critical Administration Threshold (CAT) as a tool in hemostatic resuscitation in patients with severe trauma and REBOA. Methods. Retrospective review between January 2015 and June 2020 of adult patients with hemorrhage secondary to trauma with or without REBOA in a level I trauma center in Cali, Colombia. Demographic variables, trauma severity, clinical status, transfusion needs, time to CAT+ and number of CAT achieved (1, 2 or 3) were recorded. Results. Ninety-three patients were included, in which REBOA was used in 36 and traditional management in 57. The REBOA group had a higher bleeding volume (3000 ml), IQR: 1950-3625 ml vs the control group (1500 ml, IQR: 700-2975 ml) (p<0.001) and a higher rate of PRBC units transfused in the first 6 hours (median 5, IQR: 4-9); p=0.015 and in the first 24 hours (median 6, IQR: 4-11); p=0.005. There were no statistically significant differences in the number of CAT+ patients between groups or time to CAT+. However, CAT+ status during the first 30 minutes of surgery was higher in the REBOA Group (24/36, 66.7%) vs. the control group (17/57, 29.8%; p=0.001), having this group a higher in-hospital mortality rate vs. CAT- patients. Conclusion. CAT is a useful tool in the hemostatic resuscitation of patients with trauma and REBOA that could predict early mortality.

Occlusion development after premature loss of deciduous anterior teeth: preliminary results of a 24-month prospective cohort study

ABSTRACT Objective: This study aimed to evaluate occlusion development after premature loss or extraction of deciduous anterior teeth, by means of a prospective cohort study. Methods: Fifteen infants and children aged 1 to 5 years old were longitudinally assessed (with loss or extraction of deciduous anterior teeth [n = 9], and without tooth losses [n = 6]). Photographs and dental casts at the baseline and after 24 months of follow-up were performed. Dental casts were scanned, and linear measurements were made on the digitalized models (missing tooth space, arch perimeter, arch length, arch width, intercanine length and intercanine width). The t-test was used for groups comparisons (α = 0.05). Results: Individuals' mean age at baseline was 2.93 (± 1.18) years. No statistically significant differences were observed in the missing tooth space in the group with tooth loss during the 24 months of follow-up (p > 0.05). Arch perimeter, arch length, arch width, intercanine length and intercanine width did not show differences between the groups (p > 0.05). Qualitative photographic evaluation revealed other changes in the dental arches and occlusion, such as exfoliation and eruption of deciduous teeth, eruption of permanent teeth, self-correction or establishment of malocclusion, among others. Conclusion: The results suggest that the premature loss of deciduous anterior teeth does not affect the perimeter, length and width of the dental arches; however, other alterations that lead to malocclusion could be established.

RESUMO Objetivo: Este estudo teve como objetivo avaliar o desenvolvimento da oclusão após perda prematura ou extração de dentes decíduos anteriores, por meio de um estudo de coorte prospectivo. Métodos: Quinze bebês e crianças de 1 a 5 anos foram avaliados longitudinalmente (com perda ou extração de dentes anteriores decíduos [n = 9] e sem perdas dentárias [n = 6]). Foram realizadas fotografias e modelos dentais no início e após 24 meses de acompanhamento. Os modelos dentários foram escaneados e medidas lineares foram feitas nos modelos digitalizados (espaço dentário perdido, perímetro da arcada, comprimento da arcada, largura da arcada, comprimento intercaninos e largura intercaninos). O teste t foi utilizado para comparações entre grupos (α = 0,05). Resultados: A média de idade dos indivíduos no início do estudo foi de 2,93 (± 1,18) anos. Não foram observadas diferenças estatisticamente significativas no espaço dentário perdido no grupo com perda dentária durante os 24 meses de acompanhamento (p > 0,05). O perímetro da arcada, comprimento da arcada, largura da arcada, comprimento intercaninos e largura intercaninos não apresentaram diferenças entre os grupos (p> 0,05). A avaliação fotográfica qualitativa revelou alterações nas arcadas dentárias e na oclusão, como: esfoliação e erupção de dentes decíduos, erupção de dentes permanentes, autocorreção ou estabelecimento de má oclusão, entre outras. Conclusão: Os resultados sugerem que a perda prematura de dentes anteriores decíduos não afeta o perímetro, comprimento e largura das arcadas dentárias; entretanto, outras alterações que levam à má oclusão poderiam ser estabelecidas.

Open revascularization for chronic mesenteric ischemia in the endovascular era: a quaternary-center experience and management algorithm / Revascularização aberta na isquemia mesentérica crônica durante a era endovascular: experiência de um centro quaternário e um algoritmo de tratamento

Abstract Background Chronic mesenteric ischemia (CMI) is a debilitating disease with a heavy burden on quality of life. Stenting of the superior mesenteric artery (SMA) is the first option for treatment, but there is a lack of consensus defining precise indications for open revascularization (OR). Objectives To describe a series of 4 patients with CMI treated with OR and to present an algorithm for the management of this condition. Methods Three patients presented with typical intestinal angina and weight loss. One patient was subjected to prophylactic revascularization during open abdominal aortic aneurysm repair. Surgical techniques included: 1) Bypass from the infrarenal aorta to the SMA; 2) Bypass from an aorto-bifemoral polyester graft to the SMA; 3) Bypass from the right iliac artery to the SMA; 4) Bypass from the right graft limb of an aorto-biiliac polyester graft to the median colic artery at Riolan's arcade. PTFE was used in all surgeries. All grafts were placed in a retrograde configuration, tunneled under the left renal vein, making a smooth C-loop. A treatment algorithm was constructed based on the institution's experience and a review of recent literature. Results All patients demonstrated resolution of symptoms and recovery of body weight. All grafts are patent after mean follow-up of two years. Conclusions Open revascularization using the C-loop configuration is a valuable technique for CMI and may be considered in selected cases. The algorithm constructed may help decision planning in other quaternary centers.

Resumo Contexto A isquemia mesentérica crônica (IMC) é uma doença debilitante, com grave impacto na qualidade de vida. A literatura recomenda a angioplastia com stent da artéria mesentérica superior (AMS) como primeira opção de tratamento, mas há falta de consenso que defina indicações precisas para a revascularização aberta. Objetivos Descrever uma série de quatro pacientes com IMC, tratados com revascularização aberta, e apresentar um algoritmo para o manejo dessa condição. Métodos Três pacientes apresentaram angina intestinal típica e perda ponderal. Uma paciente foi submetida a reparo aberto de aneurisma da aorta abdominal e apresentava obstrução da AMS, que foi revascularizada profilaticamente. As técnicas cirúrgicas incluíram: 1) enxerto entre a aorta infrarrenal e a AMS; 2) enxerto entre o dácron utilizado em um enxerto aortobifemoral e a AMS; 3) enxerto entre a artéria ilíaca comum direita e a AMS; e 4) enxerto entre o ramo direito do dácron utilizado em um enxerto aorto-biilíaco e a artéria cólica média (ao nível da arcada de Riolan). Todos os enxertos foram feitos utilizando politetrafluoretileno em uma configuração retrógrada, tunelizados abaixo da veia renal esquerda, fazendo uma alça em C. Resultados Todos os pacientes demonstraram resolução dos sintomas e ganho ponderal. Todos os enxertos se mantiveram pérvios durante um seguimento médio de 2 anos. Conclusões A revascularização aberta para IMC utilizando-se a alça em C é uma técnica valiosa e pode ser considerada em pacientes selecionados. O algoritmo proposto pode auxiliar na decisão terapêutica em centros quaternários.

Simultaneous unilateral central retinal vein occlusion and branch retinal artery occlusion after Coronavirus Disease 2019 (COVID-19) mRNA vaccine / Oclusão unilateral simultânea da veia retiniana central e artéria retiniana ramificada após vacina mRNA COVID-19

ABSTRACT A 51-year-old non-obese woman presented with a one-week history of progressive blurry vision within the inferior visual field of her left eye. Her only relevant past medical history was long-standing hypothyroidism and recent vaccination against Coronavirus Disease 2019 (COVID-19) with an mRNA vaccine 12 days before the onset of symptoms. At examination, the anterior segment was unremarkable, but the retinal fundus revealed a central retinal vein occlusion associated with a branch retinal artery occlusion of the superior temporal branch in her left eye. Ancillary tests to rule out thrombophilia, hyperviscosity, hypercoagulability, or inflammation were negative. Ultrasound tests were also negative for a cardiac or carotid origin of the branch retinal artery occlusion. At two-month follow-up, no new retinal vascular occlusive events were observed. Although the best-corrected visual acuity at presentation was 8/10 in the left eye, the final best-corrected visual acuity remained 3/10.

RESUMO Uma mulher de 51 anos, não obesa, apresentou história de uma semana de visão embaçada progressiva no campo visual inferior do olho esquerdo. Seu único histórico médico anterior relevante era hipotireoidismo de longa data e uma recente vacinação contra a Doença de Coronavírus 2019 (COVID-19), com vacina de mRNA, 12 dias antes do início dos sintomas. O exame mostrou segmento anterior normal, mas o fundo da retina revelou uma oclusão da veia central da retina associada a uma oclusão de ramo arterial da retina do ramo temporal superior no olho esquerdo. Testes auxiliares para descartar trombofilia, hiperviscosidade, hipercoagulabilidade ou inflamação apresentaram resultados negativos. Testes de ultrassom também foram negativos quanto a uma origem cardíaca ou da carótida da oclusão do ramo da artéria da retina. Após dois meses de acompanhamento, nenhum novo evento vascular oclusivo retiniano foi observado. Embora, a acuidade visual melhor corrigida na apresentação tenha sido de 8/10 no olho esquerdo, a acuidade visual final melhor corrigida permaneceu em 3/10.

Is there a relationship between the first-day results of anti-VEGF therapy for macular edema due to vascular diseases and longterm outcomes? / Há alguma relação entre os resultados do primeiro dia de terapia anti-VEGF para edema macular devido a doenças vasculares e o resultado a longo prazo?

ABSTRACT Purpose: To evaluate early changes after the first antivascular endothelial growth factor injection for macular edema secondary to diabetic retinopathy and retinal vein occlusion and the relationship between longterm outcomes. Methods: The study enrolled patients who received anti-vascular endothelial growth factor injections for treatment-naive macular edema due to retinal vein occlusion and diabetic retinopathy. The central macular thickness was measured at baseline, post-injection day 1, week 2, and month 1, and at the last visit using spectral-domain optical coherence tomography. A good response was defined as a central macular thickness reduction of ≥10% on post-injection day 1. Patients were reassessed at the last visit with regard to treatment response on post-injection day 1 based on the favorable anatomic outcome defined as a central macular thickness <350 µm. Results: In total, 26 (44.8%) patients had macular edema-retinal vein occlusion and 32 (55.2%) had macular edema-diabetic retinopathy. The mean follow-up time was 24.0 (SD 8.5) months. A statistically significant decrease in the central macular thickness was observed in both patients with macular edema-retinal vein occlusion and macular edema-diabetic retinopathy after antivascular endothelial growth factor injection therapy (p<0.001 for both). All patients with macular edema-retinal vein occlusion were good responders at post-injection day 1. All nongood responders at post-injection day 1 belong to the macular edema-diabetic retinopathy group (n=16.50%). The rate of hyperreflective spots was higher in nongood responders than in good responders of the macular edema-diabetic retinopathy group (p=0.03). Of 42 (2.4%) total good responders, one had a central macular thickness >350 µm, whereas 5 (31.2%) of 16 total nongood responders had a central macular thickness >350 µm at the last visit (p=0.003). Conclusion: The longterm anatomical outcomes of macular edema secondary to retinal vein occlusion and diabetic retinopathy may be predicted by treatment response 1 day after antivascular endothelial growth factor injection.

RESUMO Objetivo: Avaliar as alterações precoces após a primeira injeção de anticorpos antifator de crescimento endotelial vascular (anti-VEGF) em casos de edema macular secundário à retinopatia diabética e oclusão da veia da retina e a relação entre essas alterações e o resultado a longo prazo. Métodos: Foram incluídos no estudo pacientes que receberam uma injeção de antifator de crescimento endotelial vascular para edema macular, virgem de tratamento e devido à oclusão da veia retiniana ou a retinopatia diabética. A espessura macular central foi medida no início do tratamento e no 1º dia, 2ª semana e 1º mês após a injeção, bem como na última visita, através de tomografia de coerência óptica de domínio espectral. Definiu-se uma "boa resposta" como uma redução ≥10% na espessura macular central no 1º dia após a injeção. Os pacientes foram reavaliados na última visita com relação à resposta ao tratamento no 1º dia após a injeção, com base em um resultado anatômico favorável, definido como uma espessura macular central <350 µm. Resultado: Foram registrados 26 (44,8%) pacientes com edema macular e oclusão da veia da retina e 32 (55,2%) com edema macular e retinopatia diabética. O tempo médio de acompanhamento foi de 24,0 meses (desvio-padrão de 8,5 meses). Foi observada uma diminuição estatisticamente significativa da espessura macular central após o tratamento antifator de crescimento endotelial vascular tanto em pacientes com edema macular e oclusão da veia retiniana quanto naqueles com edema macular e retinopatia diabética (p<0,001 para ambos). Todos os pacientes com edema macular e oclusão da veia retiniana responderam bem no 1º dia pós-injeção. Todos os que responderam mal no 1º dia pós-injeção pertenciam ao grupo com edema macular e retinopatia diabética (n=16,50%). A presença de manchas hiperrefletivas foi maior nos pacientes que responderam mal do que naqueles que tiveram boa resposta no grupo com edema macular e retinopatia diabética (p=0,03). Um dos 42 (2,4%) pacientes com boa resposta total teve espessura macular central >350 um, enquanto 5 (31,2%) do total de 16 pacientes com resposta ruim apresentaram espessura macular central >350 µm na última visita (p=0,003). Conclusão: O resultado anatômico de longo prazo do edema macular secundário à oclusão da veia retiniana e à retinopatia diabética pode ser previsto pela resposta ao tratamento no 1º dia após a injeção de antifator de crescimento endotelial vascular.

Retinal vein and artery occlusion as the first manifestation of primary antiphospholipid syndrome in a pediatric patient / Oclusão arterial e venosa como primeira manifestação da síndrome antifosfolipide primária em criança

ABSTRACT Antiphospholipid syndrome is an acquired autoimmune disease characterized by hypercoagulability associated with recurrent venous and arterial thromboembolism in the presence of antiphospholipid antibodies. Herein, we report a case of rapid sequential retinal vein and artery occlusion as the first manifestation of a primary antiphospholipid syndrome triggered by an acute Mycoplasma infection in a previously healthy 11-year-old patient. On day 1, ophthalmoscopy revealed a central retinal vein occlusion. The patient developed temporal branch retinal artery occlusion the next day. On day 3, a central retinal artery occlusion was observed. Serum lupus anticoagulant, immunoglobulin (Ig) G anticardiolipin, IgG anti-β2-glycoprotein 1 antibody, and Mycoplasma pneumoniae IgM antibody levels were increased. Thus, retinal vascular occlusions can be the first manifestation of primary antiphospholipid syndrome. Although it may not improve visual prognosis, prompt diagnosis and treatment are essential to avoid further significant morbidity.

RESUMO A síndrome antifosfolipide é uma doença autoimune adquirida caracterizada por hipercoagulabilidade associada a tromboembolismo venoso e arterial recorrente na presença de anticorpos antifosfolipídicos. Aqui, relatamos um caso clínico de oclusão sequencial de veia e artéria da retina como primeira manifestação de uma síndrome antifosfolipíde primária desen­cadeada por uma infeção aguda por Mycoplasma num paciente de 11 anos previamente saudável. No primeiro dia, a oftalmoscopia revelou uma oclusão da veia central da retina. No dia seguinte, o paciente desenvolveu uma oclusão do ramo temporal da artéria central da retina. No terceiro dia, uma oclusão da artéria central da retina foi diagnosticada. Os níveis de anticoagulante lúpico sérico, anticorpos IgG anticardiolipina e IgG anti-β2-glicoproteína 1 e anticorpos IgM para Mycoplasma pneumoniae estavam aumentados. As oclusões vasculares retinianas podem ser a primeira manifestação da síndrome antifosfolipíde primária. Apesar do prognóstico visual ser reservado, o seu diagnóstico e o tratamento imediatos são essenciais para evitar outras morbilidades associadas.

Construction of a individualized model for predicting the risk of recurrence in patients with retinal vein occlusion induced macular edema / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To analyze the recurrence factors of patients with retinal vein occlusion(RVO)induced macular edema(ME)and construct a nomogram model.METHODS: Retrospective study. A total of 306 patients with RVO induced ME admitted to our hospital from January 2019 to June 2022 were included as study objects, and they were divided into modeling group with 214 cases(214 eyes)and 92 cases(92 eyes)in the verification group by 7:3. All patients were followed up for 1 a after receiving anti-vascular endothelial growth factor(VEGF)treatment, and patients in the modeling group were separated into a recurrence group(n=66)and a non recurrence group(n=148)based on whether they had recurrence. Clinical data were collected and multivariate Logistic regression was applied to analyze and determine the factors affecting recurrence in patients with RVO induced ME; R3.6.3 software was applied to construct a nomogram model for predicting the recurrence risk of patients with RVO induced ME; ROC curve and calibration curve were applied to evaluate the discrimination and consistency of nomogram model in predicting the recurrence risk of patients with RVO induced ME.RESULTS: There were statistically significant differences in central retinal thickness(CRT), course of disease, hyperreflective foci(HF), disorder of retinal inner layer structure, and injection frequency between the non recurrence group and the recurrence group before treatment(all P&#x0026;#x003C;0.05). The multivariate Logistic regression analysis showed that pre-treatment CRT(OR=1.011), course of disease(OR=1.104), HF(OR=5.074), retinal inner layer structural disorder(OR=4.640), and injection frequency(OR=4.036)were influencing factors for recurrence in patients with RVO induced ME(all P&#x0026;#x003C;0.01). The area under the ROC curve of the modeling group was 0.924(95%CI: 0.882-0.966), the slope of the calibration curve was close to 1, and the results of the Hosmer-Lemeshow goodness of fit test showed that χ2=11.817, P=0.160; the area under the ROC curve of the verification group was 0.939(95%CI: 0.892-0.985), the slope of the calibration curve was close to 1, and the results of the Hosmer-Lemeshow goodness of fit test showed χ2=6.082, P=0.638.CONCLUSION: Pre-treatment CRT, course of disease, HF, disorder of retinal inner layer structure, and injection frequency are independent risk factors for recurrence in patients with RVO induced ME. The nomogram model constructed based on this has a high discrimination and consistency in predicting the recurrence risk of patients with RVO induced ME.

Efficacy of partial and complete resuscitative endovascular balloon occlusion of the aorta in the hemorrhagic shock model of liver injury / 世界急诊医学杂志（英文）

@#BACKGROUND: Resuscitative endovascular balloon occlusion of the aorta (REBOA) can temporarily control traumatic bleeding. However, its prolonged use potentially leads to ischemia-reperfusion injury (IRI). Partial REBOA (pREBOA) can alleviate ischemic burden; however, its security and effectiveness prior to operative hemorrhage control remains unknown. Hence, we aimed to estimate the efficacy of pREBOA in a swine model of liver injury using an experimental sliding-chamber ballistic gun. METHODS: Twenty Landrace pigs were randomized into control (no aortic occlusion) (n=5), intervention with complete REBOA (cREBOA) (n=5), continuous pREBOA (C-pREBOA) (n=5), and sequential pREBOA (S-pREBOA) (n=5) groups. In the cREBOA and C-pREBOA groups, the balloon was inflated for 60 min. The hemodynamic and laboratory values were compared at various observation time points. Tissue samples immediately after animal euthanasia from the myocardium, liver, kidneys, and duodenum were collected for histological assessment using hematoxylin and eosin staining. RESULTS: Compared with the control group, the survival rate of the REBOA groups was prominently improved (all P<0.05). The total volume of blood loss was markedly lower in the cREBOA group (493.14±127.31 mL) compared with other groups (P<0.01). The pH was significantly lower at 180 min in the cREBOA and S-pREBOA groups (P<0.05). At 120 min, the S-pREBOA group showed higher alanine aminotransferase (P<0.05) but lower blood urea nitrogen compared with the cREBOA group (P<0.05). CONCLUSION: In this trauma model with liver injury, a 60-minute pREBOA resulted in improved survival rate and was effective in maintaining reliable aortic pressure, despite persistent hemorrhage. Extended tolerance time for aortic occlusion in Zone I for non-compressible torso hemorrhage was feasible with both continuous partial and sequential partial measures, and the significant improvement in the severity of acidosis and distal organ injury was observed in the sequential pREBOA.

Combination of Ranibizumab and Dexamethasone intravitreal implant for macular edema secondary to retinal vein occlusion / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To compare the differences in the efficacy and safety of combination of intravitreal dexamethasone(Ozurdex)and ranibizumab or monotherapy of ranibizumab in eyes with macular edema secondary to retinal vein occlusion(RVO-ME).METHODS: Patients diagnosed with non-ischemic RVO-ME by fluorescein fundus angiography in our hospital from June 2020 to December 2022 were selected. All patients were initially treated with intravitreal injection of ranibizumab(0.5 mg), and 42 patients(42 eyes)who had central retinal thickness(CRT)≥300 μm after 2 wk were included. They were randomly divided into combined treatment group and monotherapy group. The combined treatment group(21 eyes)received Ozurdex intravitreal injection immediately, while the monotherapy group(21 eyes)was treated with ranibizumab intravitreal injection by 3+pro re nata(PRN). The changes of best corrected visual acuity(BCVA), CRT, and intraocular pressure before and at 2 wk, 1, 2, 3, 4, 5, and 6 mo after treatment were recorded, and the ocular or systemic complications were observed.RESULTS:The BCVA and CRT of all patients at 2 wk, 1, 2, 3, 4, 5, and 6 mo after treatment were significantly better than those before treatment(all P&#x0026;#x003C;0.01). There were statistical significance in the BCVA and CRT between two groups at 2 and 3 mo after treatment(all P&#x0026;#x003C;0.05). The most significant increase of BCVA in the combined treatment group occurred at 2 mo after treatment. The mean recurrence time of macular edema in the monotherapy group was 1.45±0.53 mo, with 4.21±0.78 injection times of ranibizumab. None of the patients showed serious complications after treatment. The most common complications in the combined treatment group were subconjunctival hemorrhage and elevated intraocular pressure, which were manageable with topical ocular hypotensive agents, and no patient required antiglaucoma or cataract surgery.CONCLUSION: Compared with monotherapy of ranibizumab, intravitreal injection of dexamethasone combined with ranibizumab can significantly improve the visual acuity and effectively reduce the macular edema in the treatment of RVO-ME, with a long duration of efficacy and less intravitreal injection of drugs.

Research progress of mechanism and risk factors of retinal vein occlusion / 国际眼科杂志(Guoji Yanke Zazhi)

Retinal vein occlusion(RVO), the second most prevalent retinal vascular disease, has complex pathophysiological mechanism. Except for mechanical pressure on blood vessel, inflammation and endothelin have been confirmed to be involved in the pathogenesis of RVO. However, its specific mechanism remains unclear. Hypertension, diabetes and dyslipidemia have been previously shown to be the most common risk factors in elder population, while recent studies found that coagulation and hemorheological abnormalities are more common in people under 50 years old. Ocular risk factors including glaucoma, high corrected intraocular pressure and retinal vessels abnormality, have gained more and more attention. These factors probably exert a synergistic effect when present simultaneously in the same patient. Therefore, early identification and intervention of those factors could lower the incidence of RVO. This article aims to review recent research and summarize existing mechanism and theories, giving some new research ideas for potential therapy targets and providing references for identification and management of risk factors.

Alta temprana en infarto agudo de miocardio con elevación del segmento ST tratado con angioplastia primaria: estudio de intervención no controlado en Argentina / Early Discharge in Acute ST-segment Elevation Myocardial Infarction Treated with Primary Angioplasty: Uncontrolled Intervention Study in Argentina

RESUMEN Introducción y objetivos: El alta hospitalaria temprana (dentro de las primeras 48 horas) en pacientes con infarto agudo de miocardio con elevación del segmento ST (IAMCEST) tratados con angioplastia coronaria primaria con stent (ATCp) ha sido adoptada en países desarrollados. Sin embargo, su implementación en Sudamérica ha sido dispar. Material y métodos: Estudio piloto de intervención no controlado, argentino, de pacientes con IAMCEST de bajo riesgo tratados con ATCp, para evaluar tasa de alta temprana y comparar la incidencia de eventos cardiovasculares adversos mayores (MACE) con la que ocurre en pacientes externados en forma no temprana. Resultados: Desde 2013 hasta 2021 se trataron con ATCp 320 pacientes con IAMCEST, de los que 158 fueron de bajo riesgo. Alta temprana en 63,9% (IC 95% 55,9-71,4%). La diabetes (OR 0,31; IC 95% 0,12-0,83) y el IAMCEST anterior (OR 0,34; IC 95% 0,16-0,69) se asociaron en forma independiente con menor probabilidad de alta temprana. Durante una mediana de seguimiento de 27,2 meses, la razón de tasas de incidencia de MACE entre los grupos de alta temprana y no temprana fue de 0,77 (IC 95 % 0,25-2,58; p = 0,61). Las variables asociadas de forma independiente con MACE fueron la revascularización completa (HR 0,18; IC 95% 0,03-0,95) y el tiempo de fluoroscopía (HR 1,02; IC 95% 1,01-1,05). No hubo diferencias significativas en las complicaciones del acceso vascular, las tasas de reingreso a 30 días y sobrevida global entre los grupos. Conclusiones: El alta temprana en pacientes con IAMCEST de bajo riesgo tratados con ATCp puede ser factible incluso en países en desarrollo, sin aumento significativo de la morbimortalidad.

ABSTRACT Background and objectives: Early discharge (within the first 48 hours) in patients with ST-segment elevation myocardial infarction (STEMI) managed with primary percutaneous coronary intervention (PCI) with stenting is a strategy that has been adopted in developed countries. However, its implementation in South America has been uneven. Methods: We conducted an uncontrolled intervention pilot study on low-risk STEMI patients managed with primary PCI to evaluate the early discharge rate and compare the incidence of major adverse cardiovascular events (MACE) with those occurring in patients discharged later. Results: Of 320 STEMI patients managed with primary PCI from 2013 to 2021, 158 were low-risk patients and 63.9% (95% CI 55.9-71,4%) of them were discharged early. Diabetes (OR 0.31, 95% CI 0.12-0.83), and anterior wall STEMI (OR 0.34, 95% CI 0.16-0.69) were independently associated with lower probability of early discharge. During a median follow-up period of 27.2 months, the incidence rate ratio of MACE between the early discharge and non-early discharge groups was 0.77 (95% CI 0.25-2.58; p = 0.61). The variables independently associated with MACE were complete revascularization (HR 0.18, 95% CI 0.03-0.95) and fluoroscopy time (HR 1.02, 95% CI 1.01-1.05). There were no significant differences in vascular access complications, 30-day readmission rate and overall survival between groups. Conclusions: Early discharge in low-risk STEMI patients managed with primary PCI may be feasible even in developing countries, without significantly increasing morbidity and mortality.

Oclusión intestinal en paciente renal crónico secundario a bezoar de telas Reporte de un caso clínico / Intestinal Occlusion in a Chronic Renal Patient Secondary to Textile Bezoar. Clinical Case Report

Resumen Los "bezoar" son conglomerados de materiales no comestibles ingeridos voluntaria o involuntariamente, no digeridos e incapaces de transitar por el tracto intestinal. Principalmente afectan a jóvenes mujeres o adolescentes que presentan el fenómeno llamado "pica", y a pesar de que se ha registrado una alta prevalencia de este fenómeno en pacientes con enfermedad renal crónica (ERC), ha sido poco estudiado. Caso clínico: Paciente del sexo masculino de 35 años de edad que cursa con ERC KDIGO-5 en tratamiento con diálisis peritoneal; se obtiene el hallazgo de "bezoar plástico" transoperatorio (laparotomia por oclusión intestinal) a 10 cm de la válvula ileocecal. El paciente fallece por complicaciones de la patología de origen. Se plantea la necesidad de realizar la búsqueda de comportamientos en pacientes con ERC, que indiquen al cirujano la sospecha, dado que los pacientes generalmente ocultan u omiten referir sobre la ingesta de material extraño.

Abstract The "bezoar" are conglomerates of inedible materials ingested voluntarily or involuntarily, which are not digested and are unable to pass through the intestinal tract. They mainly affect young women or adolescents who present the phenomenon called "pica", despite the fact that a high prevalence of this phenomenon of "pica" has been registered in patients with chronic kidney disease, it has been little studied. Clinical case: A 35-year-old male with CKD KDIGO-5 undergoing peritoneal dialysis treatment, which was found to have a transoperative "plastic bezoar" (laparotomy for intestinal occlusion) 10 cm from the ileocecal valve. The patient died due to complications of his pathology. Discussion: the clinical case raises the need to search for behaviors such as pica in patients with CKD, as well as to develop the suspicion to the surgeon, since patients generally hide or ignore reporting foreign material phagia.

Malrotación intestinal en el adulto: cirugía de Ladd laparoscópica / Intestinal Malrotation in Adults: laparoscopic Ladd's Surgery

Las malrotaciones por bandas de Ladd son un subtipo de anormalidades de la embriogénesis consistentes en prolongaciones fibrosas, producto de una fijación anómala del mesenterio. Se extienden desde el ciego mal rotado hacia el retroperitoneo, pudiendo producir compresión extrínseca del duodeno. En el 90% de los casos la presentación clínica tiene lugar dentro del primer año de vida como un cuadro agudo, en forma de oclusión duodenal o vólvulo de intestino delgado con la consecuente isquemia de este o hernia interna. En la edad adulta, las formas de presentación son menos específicas. Los métodos de referencia ("gold standard") utilizados para el diagnóstico son la seriada gastroduodenal y la tomografía computarizada. El tratamiento quirúrgico consiste en la cirugía de Ladd, cuyo abordaje convencional fue descripto en 1936 por William Ladd. Presentamos el caso de un paciente adulto con un cuadro oclusivo, causado por dicha anomalía, diagnosticado de forma oportuna y resuelto de manera segura por vía laparoscópica. (AU)

Ladd's band malrotations are a subtype of abnormalities of embryogenesis consisting of fibrous extensions, product of abnormal fixation of the mesentery, that goes from the poorly rotated cecum towards the retroperitoneum, which can cause extrinsic compression of the duodenum. In 90% of cases, the clinical presentation takes place within the first year of life, as an acute condition, like duodenal occlusion or small bowel volvulus with its consequent ischemia or internal hernia. In adulthood, the forms of presentation are less specific. The gold standard methods used for diagnosis are gastroduodenal series and computed tomography. Surgical treatment consists of Ladd's surgery, whose conventional approach was described in 1936 by William Ladd. We present ta case of an adult patient with an occlusive presentation, given by this anomaly, diagnosed in a timely manner and safely resolved by laparoscopic approach. (AU)

Alternativas de tratamiento de la obstrucción venosa retiniana: terapias combinadas y vitrectomía pars plana

Dentro de las enfermedades vasculares de la retina, la oclusión venosa retiniana es relativamente frecuente y debido a sus complicaciones afecta de forma moderada o grave la visión. Las opciones terapéuticas aplicadas en el edema macular y los desprendimientos de retina traccionales causados por las oclusiones venosas son varias. Se realizó una revisión en la literatura científica para valorar la eficacia y seguridad del uso combinado de diferentes terapias que incluye los antiangiogénicos y esteroides intravítreos con o sin aplicación de láser, así como la vitrectomía pars plana como alternativas de tratamiento de las complicaciones de la enfermedad oclusiva venosa retiniana. Aun cuando los antiangiogénicos se consideren como primera línea de tratamiento en la oclusión venosa retiniana, en varios casos hay mejor respuesta en sus combinaciones y de los esteroides con láser. Para resolver el desprendimiento de retina traccional y hemorragia vítrea, debidas a las oclusiones venosas, se requiere, mayormente, operación de vitrectomía pars plana. Se realizó una búsqueda en bases de datos electrónicas como PubMed, Cochrane y otras publicaciones relacionadas con las alternativas de tratamiento de la obstrucción venosa retiniana en los últimos años.

Among retinal vascular diseases, retinal venous occlusion is relatively frequent and due to its complications, it moderately or severely affects vision. The therapeutic options applied in macular edema and tractional retinal detachments caused by venous occlusions are several. A review of the scientific literature was performed to assess the efficacy and safety of the combined use of different therapies including intravitreal antiangiogenics and steroids with or without laser application, as well as pars plana vitrectomy as treatment alternatives for the complications of retinal venous occlusive disease. Even when antiangiogenics are considered as first line of treatment in retinal venous occlusion, in several cases there is better response in their combinations and steroids with laser. To resolve tractional retinal detachment and vitreous hemorrhage due to venous occlusions, a pars plana vitrectomy operation is mostly required. A search was made in electronic databases such as PubMed, Cochrane and other publications related to treatment alternatives for retinal venous obstruction in recent years.

Especificidades técnicas no tamponamento uterino com balões e algumas dificuldades técnicas / Technical specificities in uterine tamponade with balloons and some technical difficulties

A mortalidade materna é inaceitavelmente alta. A hemorragia pós-parto encontra- se na primeira posição no mundo, tendo como principal causa específica a atonia uterina. Eventualmente, as medidas iniciais e a terapia farmacológica não são efetivas no controle do sangramento, impondo a necessidade de tratamentos invasivos, cirúrgicos ou não. Entre esses, o tamponamento uterino com balão requer recursos locais mínimos e não exige treinamento extensivo ou equipamento muito complexo. Entretanto, algumas dificuldades podem ocorrer durante a inserção, infusão ou manutenção do balão na cavidade uterina, com especificidades relacionadas à via de parto. Após o parto vaginal, a dificuldade mais prevalente é o prolapso vaginal do balão. Na cesárea, as principais dificuldades são a inserção e o posicionamento do balão na cavidade uterina, principalmente nas cesáreas eletivas. Este artigo revisa e ilustra as principais dificuldades e especificidades relacionadas ao tamponamento uterino com balões.

Maternal mortality is unacceptably high. Postpartum hemorrhage is ranked first in the world, with the main specific cause being uterine atony. Eventually, initial measures and pharmacological therapy are not effective in controlling bleeding, imposing the need for invasive treatments, surgical or not. Among these, uterine balloon tamponade requires minimal local resources and does not require extensive training or very complex equipment. However, some difficulties may occur during insertion, infusion, or maintenance of the balloon in the uterine cavity, with specificities related to the mode of delivery. After vaginal delivery, the most prevalent difficulty is vaginal balloon prolapse. In cesarean section, the main difficulty is the insertion and positioning of the balloon in the uterine cavity, especially in elective cesarean sections. This article reviews and illustrates the main difficulties and specificities related to uterine balloon tamponade.

Prepapillary vascular loops – A new classification

Background: Prepapillary vascular loops are a type of congenital vascular anomaly seen on or around the optic disk. Patients with this condition are usually asymptomatic and are detected incidentally on routine fundus examinations. Differential diagnosis for this condition includes neovascularization of the disk and collaterals on the disk. Prepapillary capillary loops are not associated with any systemic condition. They are usually unilateral in presentation, but can rarely be bilateral. Purpose: To discuss the new proposed classification of prepapillary capillary loops. Synopsis: Prepapillary capillary loops are classified based on their location around the disk, loop characteristics such as elevation, shape, and covering, and presence of vitreoretinal traction. Highlights: The most common vascular loops are arterial in origin and rarely venous in origin. They can sometimes be associated with spontaneous and recurrent vitreous hemorrhage, branch retinal artery or vein occlusion, and subretinal hemorrhage. It is an important differential diagnosis in spontaneous vitreous hemorrhage. Treatment is symptomatic

Reabilitação oral com próteses parciais removíveis após restabelecimento de dimensão vertical de oclusão e tratamento multidisciplinar: relato de caso / Oral rehabilitation with removable partial dentures after restoration of the vertical dimension of occlusion and multidisciplinary treatment: case report

As próteses parciais removíveis (PPRs) são uma alternativa de tratamento viável na prática clínica para reabilitar arcos parcialmente desdentados. Entretanto, o planejamento dessas próteses e preparo bucal prévio são frequentemente negligenciados. O presente artigo tem como objetivo relatar o caso clínico de uma reabilitação oral com PPRs superior e inferior após abordagem multidisciplinar, de modo a enfatizar as fases de um planejamento criterioso e de preparo prévio dos dentes pilares, visando o sucesso e a longevidade da reabilitação. Paciente do sexo masculino de 57 anos de idade compareceu à clínica da Faculdade de Odontologia de Bauru, Universidade de São Paulo, queixando-se da estética de seu sorriso e de algumas ausências dentárias. O indivíduo utilizava uma PPR provisória inferior insatisfatória e apresentava perda de dimensão vertical de oclusão (DVO). Após o exame clínico, radiográfico e estudo do caso em articulador semi-ajustável, realizou-se o planejamento com abordagens restauradoras, endodônticas, periodontais e protéticas. Após tratamento periodontal, foi realizada endodontia dos elementos 12, 15 e 47, confecção de núcleos e coroas nos dentes 12 e 15, restauração a nível gengival para apoio residual no dente 47, restaurações nos dentes 11, 13, 22, 24 e 44 e, por fim, a confecção das PPRs superior e inferior. A abordagem multidisciplinar utilizada neste caso clínico viabilizou o restabelecimento da DVO e possibilitou o sucesso da reabilitação protética(AU)

Removable partial dentures (RPDs) are a viable treatment alternative in clinical practice to rehabilitate partially edentulous arches. However, the planning of these dentures and prior oral preparation are often neglected. This article aims to report the clinical case of an oral rehabilitation with upper and lower RPDs after a multidisciplinary approach, to emphasize the phases of careful planning and prior preparation of the abutment teeth, aiming at the success and longevity of the rehabilitation. A 57-year-old male patient came to the clinic of the Bauru School of Dentistry, University of São Paulo, complaining about the esthetics of his smile and some missing teeth. The subject was using an unsatisfactory lower provisional prosthesis and had a loss of vertical dimension of occlusion (OVD). After the clinical and radiographic examination and the case study in a semi-adjustable articulator, planning was carried out with restorative, endodontic, periodontal and prosthetic approaches. After periodontal treatment, endodontics were performed on elements 12, 15 and 47, creation of cores and crowns on teeth 12 and 15, restoration at the gingival level for residual support on tooth 47, restorations on teeth 11, 13, 22, 24 and 44 and, finally, the making of the upper and lower PPRs. The multidisciplinary approach used in this clinical case enabled the restoration of the OVD and enabled the success of the oral rehabilitation(AU)

Case series of central retinal artery occlusion in COVID-19-associated rhino-orbital-cerebral mucormycosis

Rhino orbital Mucormycosis caused by filamentous fungus of mucoraceae family was considered a rare disease affecting immunocompromised and diabetics with ketoacidosis until the recent COVID 19 pandemic. We are presenting a series of six cases of Rhino orbital cerebral Mucormycosis with central retinal artery occlusion. All six cases had common history of COVID 19 infection in recent past with sinusitis, proptosis and total ophthalmoplegia with central retinal artery occlusion on presentation. MR imaging showed invasive pan sinusitis with orbital and cerebral involvement. Urgent debridement was done and histopathological examination showed broad, filamentous aseptate fungi suggestive of Mucormycosis. All patients inspite of intravenous Amphotericin B with local debridement did not show any improvement and expired within a week of presentation. Hence our study shows poor prognosis of post covid 19 associated Mucormycosis with central retinal artery occlusion.

Knowledge, Attitudes, and Practices on New Treatment Modalities for Temporomandibular Dysfunctions and Orofacial Pain / Conocimientos, Actitudes y Prácticas sobre Nuevas Nodalidades de Tratamiento de las Disfunciones Tempomanibulares y el Dolor Orofacial

The present study proposed to describe, through a literature review, the use of new therapeutic management which allows for offering a better quality of life to individuals affected by these pathologies. A bibliographic search was conducted in the main health databases PUBMED (www.pubmed.gov) and Scholar Google (www.scholar.google.com.br), in which studies published from 1987 to 2023 were collected. In the first stage, the list of retrieved articles was examined by reading the titles and abstracts. In the second stage, the studies were selected by reading the full contents. Two authors (JDMM and DAQ) performed stages 1 and 2. Experimental, clinical, case-control, randomized controlled, and laboratory cohort studies, case reports, systematic reviews, and literature reviews, which were developed in living individuals, were included. Therefore, articles that did not deal with the subject in question, letters to the editor, opinion articles, duplicated literature in databases, and literature that did not address the variables under study, we re excluded. Contemporary dentistry uses alternative treatments capable of improving the patient's condition since a cure is not always possible. Therefore, the possibility of improving the quality of life becomes an important point to be reached. Evidence-based healthcare has made great advances in recent decades, especially in the areas of orofacial pain, TMD, and occlusion, especially related to orthodontic, prosthetic, and restorative care.

En el presente estudio se propuso describir, a través de una revisión bibliográfica, el uso de nuevos manejos terapéuticos que permitan brindar una mejor calidad de vida a los individuos afectados por estas patologías. Se realizó una búsqueda bibliográfica en las principales bases de datos de salud PUBMED (www.pubmed.gov) y Scholar Google (www.scholar.google.com.br), en las que se recopilaron estudios publicados entre 1987 y 2023. En la primera etapa, se examinó la lista de artículos recuperados mediante la lectura de los títulos y resúmenes. En la segunda etapa, los estudios fueron seleccionados mediante la lectura del contenido completo. Dos autores (JDMM y DAQ) realizaron las etapas 1 y 2. Se incluyeron estudios de cohortes experimentales, clínicos, de casos y controles, controlados aleatorios y de laboratorio, informes de casos, revisiones sistemáticas y revisiones de la literatura, que se desarrollaron en individuos vivos. Por lo tanto, se excluyeron artículos que no trataran el tema en cuestión, cartas al editor, artículos de opinión, literatura duplicada en bases de datos y literatura que no abordara las variables en estudio. La odontología contemporánea utiliza tratamientos alternativos capaces de mejorar el estado del paciente, ya que no siempre es posible la curación. Por lo tanto, la posibilidad de mejorar la calidad de vida se convierte en un objetivo importante. La atención médica basada en la evidencia ha logrado grandes avances en las últimas décadas, especialmente en las áreas de dolor orofacial, TMD y oclusión, especialmente en relación con la atención de ortodoncia, prótesis y restauración.

Left Main Total Chronic Occlusion in a Patient with Colorectal Cancer: A Case Report of a Rare and Severe Localization of Coronary Artery Disease

The aim of this case report is to draw attention at the potential severity of presentation of these associated pathologies. Prevention through early screening of colorectal cancer in patients with coronary artery disease and vice versa is the guarantee of a better management of the two pathologies. Cardiovascular disease and cancer are the two leading causes of death worldwide. Emerging evidence suggests associations between cardiovascular disease and several cancers, including colorectal cancer. Many cases have reported severe coronary artery disease (CAD) in association with colorectal cancer including triple vessel disease. To the best of our knowledge this is the first case reporting a total occlusion of the left main coronary artery in such patients. We report the case of a 52 years old woman presented to our cath lab for severe angina (Class III of the Canadian classification) and impairment of left ventricle function. Six months before the patient was diagnosed with a metastatic colorectal cancer. Coronary angiography showed absence of anterograde opacification of the left coronary system. Selective right coronary artery angiography showed a retrograde filling of the left coronary system by collaterals issued from proximal and distal dominant right coronary artery. Several studies have reported the association between colorectal neoplasm and CAD but Isolated left main coronary artery disease is extremely uncommon. Patients with left main coronary artery disease have always a grim prognosis and without prompt revascularization 60% will die after 5 years while survivors live with severe angina; heart failure or both.