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1.
Rev. bras. cir. cardiovasc ; 36(2): 244-252, Mar.-Apr. 2021. graf., tab.
Article in English | SES-SP, LILACS, SES-SP, CONASS, SESSP-IDPCPROD, SES-SP | ID: biblio-1251100

ABSTRACT

Abstract Objective: To investigate whether hybrid repair has supremacy over conventional open repair in aortic arch diseases. Methods: A comprehensive search was undertaken in two major databases (PubMed and MEDLINE) to identify all studies comparing the two surgical techniques in five years, up to December 2018, that met the established criteria in this study. The search returned 310 papers, and 305 were selected after removing duplicates. The abstracts of the remaining articles were assessed, resulting in 15 studies that went to full-text analysis. After application of the inclusion and exclusion criteria, 8 papers remained for the final revision. Results: Eight studies met the criteria, with the inclusion of 1,837 patients. From a short-term perspective, hybrid repair and conventional open repair had similar outcomes in terms of postoperative mortality and acute neurological events. Hybrid repair was associated with less respiratory complications and risk of new intervention, as well as reduced hospital length of stay. Conventional open repair showed better mid- and long-term outcomes. Conclusion: Hybrid repair should be used in selected patients, with a high risk or very high-risk profile for conventional surgery. Finally, since most of the current data were obtained from limited to large samples, with narrow follow-up and had great heterogeneity, the best approach to the aortic arch is still variable. Therefore, the decision of the approach should be individualized and evaluated by the whole Heart Team, considering the expertise of the surgical team.


Subject(s)
Humans , Aorta, Thoracic/surgery , Postoperative Complications , Retrospective Studies , Blood Vessel Prosthesis Implantation , Treatment Outcome
3.
Rev. colomb. cardiol ; 28(1): 18-23, ene.-feb. 2021. tab, graf
Article in Spanish | LILACS, COLNAL | ID: biblio-1341255

ABSTRACT

Resumen Introducción: El conocimiento del patrón de las estructuras que emergen del arco aórtico es importante para las intervenciones en el cuello y la cabeza. Las variantes anatómicas y el área interna de estos vasos son cruciales para el enfoque de terapias endovasculares más seguras. Objetivo: Mostrar las variantes anatómicas y el área de los vasos que tiene dicha variación. Materiales y métodos: Se seleccionaron cuatrocientos cadáveres frescos, del Instituto Nacional de Medicina Legal y Ciencias Forenses de Medellín, con edades comprendidas entre los 18 y 40 años, sin lesiones en el tórax o el cuello, a los cuales se les evaluaron sus arcos aórticos. Todas las variantes se fijaron mediante registro fotográfico y las medidas se tomaron con un calibrador Mitutoyo. Conclusión: Este es el segundo trabajo sobre el tema llevado a cabo en Colombia y el primero en usar cadáveres frescos que se incorporaron en la medida que cumplían los criterios de inclusión.


Abstract Introduction: The knowledge of the pattern of the structures that emerge from the aortic arch is important for neck and head interventions mainly. The presence of anatomical variants and the internal area of these vessels is of great importance for the approach of safer endovascular therapies. Objective: To show the anatomical variants present and the area of the vessels that present such variation. Materials and methods: Four hundred fresh cadavers, aged between 18 and 40 years, without chest or neck injuries, were selected to evaluate their aortic arches, in the National Institute of Legal Medicine and Forensic Sciences of the city of Medellin, Colombia. All the variants were fixed photographically and the measurements taken with Mitutoyo calibrator. Conclusion: This is the second work on the subject carried out in our country and the first one using fresh cadavers and in a random way.


Subject(s)
Humans , Male , Female , Adult , Morgue , Aorta, Thoracic , Anatomic Variation
6.
Clinics ; 76: e2315, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153929

ABSTRACT

OBJECTIVES: Thoracic aortic aneurysms (TAAs) represent one-third of the hospitalizations for aortic diseases. The prevalence rate depends on the definition of the normal size of the aorta, which is quite variable, depending on the population studied. The aim of this study was to evaluate the characteristics of the thoracic aorta of Brazilian smokers, identifying the normal size of the aorta, presence of anatomical variations, and prevalence of TAA. MATERIALS AND METHODS: A total of 711 patients underwent radiological evaluation with low-dose computed tomography (CT) from January 2013 to July 2014 with the initial objective of lung nodule tracking. Two examiners evaluated these images, and measurements of maximum and serial diameters were performed manually in true orthogonal planes. Serial diameter measurements were taken every 2 cm in the ascending aorta and 5 cm in the descending segment. We searched for anatomical variations, aortic arch type, and correlations between anatomical characteristics, sex, body mass index, and body surface area (BSA). RESULTS: The maximum diameters were 33.61 (standard deviation [SD] 3.88), 28.66 (SD 2.89), and 28.36 mm (SD 3.09) for the ascending segment, aortic arch, and descending segment, respectively. A positive correlation was found between male sex, age, and BSA and aorta diameter. The bovine arch was the most common variation of the aortic arch type, and we found one (0.14%) case of TAA. CONCLUSIONS: This study with low-dose CT allowed the determination of the mean diameters of the ascending aorta, aortic arch, and descending aorta in Brazilian smokers and TAA prevalence.


Subject(s)
Humans , Male , Aorta, Thoracic/diagnostic imaging , Aortic Aneurysm, Thoracic/epidemiology , Aortic Aneurysm, Thoracic/diagnostic imaging , Brazil/epidemiology , Tomography, X-Ray Computed , Smokers
7.
Article in English | WPRIM | ID: wpr-880647

ABSTRACT

Type A aortic dissection (AD) is a critical and severe disease with high mortality. The Sun's operation is a standard surgical method for this kind of disease at present. For the procedure, an elephant trunk stent is inserted into the true lumen of the descending aorta and the aortic arch is replaced. A patient was admitted to the First Hospital of Lanzhou University due to sudden chest and back pain for 6 days. Computed tomography angiography (CTA) showed type A AD. Ascending aorta replacement, Sun's operation, and ascending aorta to right femoral artery bypass grafting were performed. After surgery, the patient's condition was worsened. The digital subtraction angiography (DSA) showed the elephant trunk stent was inserted into the false lumen of AD, leading to the occlusion of the large blood vessel at the distal part of the abdominal aorta and below. Although we performed intima puncture and endovascular aortic repair, the patient was still dead.


Subject(s)
Aneurysm, Dissecting/surgery , Aorta, Abdominal , Aorta, Thoracic/surgery , Blood Vessel Prosthesis Implantation/adverse effects , Humans , Stents/adverse effects , Treatment Outcome
8.
Clinics ; 76: e2332, 2021. tab, graf
Article in English | LILACS | ID: biblio-1153976

ABSTRACT

OBJECTIVES: In Brazil, descending thoracic aorta disease (TAD), including aneurysms and dissection, are preferentially managed by endovascular treatment (TEVAR) due to the feasibility and good results of this technique. In this study, we analyzed endovascular treatment of isolated TAD (ITAD) in the public health system over a 10-year period in São Paulo, a municipality in Brazil in which more than 5 million inhabitants depend on the governmental health system. METHODS: Public data from procedures performed between 2008 and 2019 were extracted using web scraping techniques. The following types of data were analyzed: demographic data, operative technique, elective or urgent status, number of surgeries, in-hospital mortality, length of hospital stay, mean length of stay in the intensive care unit, and reimbursement values paid by the government. Trauma cases and congenital diseases were excluded. RESULTS: A total of 1,344 procedures were analyzed; most patients were male and aged ≥65 years. Most individuals had a residential address registered in the city. Approximately one-third of all surgeries were urgent cases. There were 128 in-hospital deaths (9.52%), and in-hospital mortality was lower for elective than for urgent surgeries (7.29% vs. 14.31%, p=0.031). A total of R$ 24.766.008,61 was paid; an average of R$ 17.222,98 per elective procedure and R$ 18.558,68 per urgent procedure. Urgent procedures were significantly more expensive than elective surgeries (p=0.029). CONCLUSION: Over a 10-year period, the total cost of ITAD interventions was R$ 24.766.008,61, which was paid from the governmental system. Elective procedures were associated with lower mortality and lower investment from the health system when compared to those performed in an urgent scenario.


Subject(s)
Humans , Male , Female , Aged , Aortic Aneurysm, Thoracic/surgery , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Aorta, Thoracic/surgery , Postoperative Complications , Time Factors , Brazil/epidemiology , Public Health , Retrospective Studies , Risk Factors , Treatment Outcome
10.
Medwave ; 21(1): e8112, 2021.
Article in English, Spanish | LILACS | ID: biblio-1283299

ABSTRACT

El pseudoaneurisma se define como un hematoma pulsátil repermeabilizado, encapsulado y en comunicación con la luz de un vaso dañado. Se origina cuando hay una disrupción de la pared arterial. La hemoptisis es un signo/síntoma de presentación muy rara de aneurisma aórtico torácico y de pseudoaneurisma aórtico torácico. Hay poca información sobre la hemoptisis asociada con la ruptura del aneurisma aórtico cuyo mecanismo no se explica por la presencia de una fístula aortopulmonar. Entre las hipótesis para explicar este fenómeno, se encuentra la capacidad de las arterias bronquiales de volverse hiperplásicas y tortuosas en presencia de una lesión que modifica la arquitectura pulmonar, siendo más susceptibles a la ruptura. También hay descripciones de lesiones directas del parénquima pulmonar por aneurisma roto. El presente caso nos ilustra que debemos considerar a la hemoptisis como signo de alarma en el diagnóstico diferencial de los aneurismas y pseudoaneurismas aórticos entre otras causas que puede ser fatal en breve tiempo por una hemorragia masiva.


Pseudoaneurysm is defined as a reperfused pulsatile hematoma, encapsulated and communicated with the damaged vessel's lumen. It originates when there is a disruption of the arterial wall. Hemoptysis is a very rare sign/symptom of a thoracic aortic aneurysm or pseudoaneurysm. There is little information on hemoptysis associated with aortic aneurysm rupture, whose mechanisms are not explained by the presence of an aortopulmonary fistula. Among the hypotheses to explain this phenomenon, is the ability of the bronchial arteries to become hyperplasic and tortuous in the presence of a lesion that modifies the pulmonary architecture, being more susceptible to rupture. There are also descriptions of direct lung parenchymal injury from ruptured aneurysm. The present case illustrates that we must consider the hemoptysis as a warning sign in differential diagnosis of aortic aneurysms and pseudo aneurysms, among other causes, that it can be fatal in a short time due to massive hemorrhage.


Subject(s)
Humans , Male , Aged, 80 and over , Aorta, Thoracic/diagnostic imaging , Aortic Rupture , Aortic Aneurysm, Thoracic/diagnostic imaging , Aneurysm, False/diagnostic imaging , Hemoptysis/etiology , Tomography, X-Ray , Aortic Aneurysm, Thoracic/surgery , Aortic Aneurysm, Thoracic/complications , Aneurysm, False/surgery , Aneurysm, False/complications , Diagnosis, Differential , Computed Tomography Angiography , Hemoptysis/diagnosis
11.
Rev. bras. cir. cardiovasc ; 35(6): 977-985, Nov.-Dec. 2020. tab, graf
Article in English | SES-SP, LILACS, SES-SP | ID: biblio-1144002

ABSTRACT

Abstract Objective: To review the currently available literature to define the role of thoracic endovascular aortic repair (TEVAR) in patients with connective tissue disorders (CTD). Methods: A comprehensive electronic database search was performed in PubMed, SCOPUS, Embase, Google scholar, and OVID to identify all the articles that reported on outcomes of utilizing TEVAR in patients with CTD during elective and emergency settings. The search was not limited to time or language of the published study. Results: All the relevant studies have been summarized in its correspondence section. The outcomes were analyzed in narrative format. The role of TEVAR has been elaborated as per each study. Currently, there is limited large cohort size studies outlining the use of TEVAR in patients with CTD. The use of endovascular repair in patients with CTD is limited due to progressive aortic dilatations and high possibility of further reinterventions at later stage of life. Conclusion: Open repair remains the gold standard method of intervention in young patients with progressive CTD, especially in the setting of acute type A aortic dissection. However, TEVAR can be sought as a reliable alternative in emergency setting of diseases involving the descending thoracic aorta; yet the long-term data needs to be published to support such practice.


Subject(s)
Humans , Aortic Diseases/surgery , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Aorta, Thoracic/surgery , Postoperative Complications/surgery , Retrospective Studies , Risk Factors , Treatment Outcome , Aortic Aneurysm, Thoracic/surgery , Connective Tissue
12.
Rev. bras. cir. cardiovasc ; 35(6): 934-941, Nov.-Dec. 2020. tab, graf
Article in English | SES-SP, LILACS, SES-SP | ID: biblio-1143992

ABSTRACT

Abstract Introduction: The aim of this study is to compare postoperative outcomes and follow-up of two different modifications facilitating surgical technique of frozen elephant trunk (FET) procedure for complex thoracic aortic diseases - zone 0 (fixation with total arch debranching) and zone 3 (fixation with islet-shape arch repair). Methods: From May 2012 to December 2018, data were collected from 139 patients who had been treated with FET procedure for complex thoracic aortic diseases. According to Ishimaru arch map, patients with proximal anastomotic site of hybrid graft at zone 0 and zone 3 were grouped as Group A (n=58, 41.7%) and Group B (n=81, 58.3%), respectively. Mean age of study population was 54.7±11.4 years, and 111 patients were male (79.9%). Results: In-hospital mortality was observed in 20 (14.4%) patients (n=12, acute type A aortic dissection, and n=4, previous aortic dissection surgery). There was no significant difference between both groups in terms of in-hospital mortality. Four patients from Group A and three patients from Group B had permanent neurological deficit (P=0.32). Three patients from both groups had transient spinal cord ischemia (P=0.334). Although mean total perfusion time was longer in Group A, duration of visceral ischemia, when compared with Group B, was shorter (P<0.001). Five-year survival rate was 82.8% in Group A and 81.5% in Group B (P=0.876). Conclusion: FET procedure is a feasible repair technique in the treatment of complex aortic diseases, providing satisfactory early results. Because of its advantageous aspects, zone 0 fixation with debranching is the preferred technique in our clinic.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aortic Aneurysm, Thoracic/surgery , Aortic Aneurysm, Thoracic/diagnostic imaging , Blood Vessel Prosthesis Implantation , Aneurysm, Dissecting/surgery , Aneurysm, Dissecting/diagnostic imaging , Aorta, Thoracic/surgery , Blood Vessel Prosthesis , Stents , Retrospective Studies , Treatment Outcome
13.
Rev. bras. cir. cardiovasc ; 35(6): 970-976, Nov.-Dec. 2020. tab, graf
Article in English | SES-SP, LILACS, SES-SP | ID: biblio-1143989

ABSTRACT

Abstract Objective: To give an overview of the Ortner's syndrome caused by an aortic arch aneurysm. Methods: By comprehensive retrieval of the pertinent literature published in the past two decades, 75 reports including 86 patients were collected and recruited into this study along with a recent case of our own. Results: The aortic arch aneurysms causing hoarseness were most commonly mycotic aneurysms. In this patient setting, in addition to the left recurrent laryngeal nerve, trachea was the most commonly affected structure by the aortic arch aneurysm. Surgical/interventional/hybrid treatments led to a hoarseness-relieving rate of 64.3%, much higher than that of patients receiving conservative treatment. However, hoarseness recovery took longer time in the surgically treated patients than in the interventionally treated patients. Conclusion: The surgical and interventional treatments offered similar hoarseness-relieving effects. Surgical or interventional treatment is warranted in such patients for both treatment of arch aneurysms and relief of hoarseness.


Subject(s)
Humans , Aorta, Thoracic , Aortic Aneurysm/complications , Vocal Cord Paralysis/etiology , Hoarseness/etiology , Syndrome
14.
Arq. bras. cardiol ; 115(4): 669-677, out. 2020. tab, graf
Article in Portuguese | SES-SP, LILACS, SES-SP | ID: biblio-1131333

ABSTRACT

Resumo Fundamento: Diversos estudos têm mostrado que as classes de diterpenos exercem efeito significativo no sistema cardiovascular. Os diterpenos, em particular, estão entre os principais compostos associados às propriedades cardiovasculares, como a propriedade vasorrelaxante, inotrópica, diurética e a atividade hipotensora. Embora o mecanismo de vasorrelaxamento do manool seja visível, seu efeito sobre a pressão arterial (PA) ainda é desconhecido. Objetivo: Avaliar o efeito hipotensor in vivo do manool e verificar o efeito de vasorrelaxamento ex vivo em anéis aórticos de ratos. Métodos: Os animais foram divididos aleatoriamente em dois grupos: normotensos e hipertensos. O grupo normotenso foi submetido à cirurgia sham e adotou-se o modelo 2R1C para o grupo hipertenso. Realizou-se monitoramento invasivo da PA para testes com manool em diferentes doses (10, 20 e 40 mg/kg). Foram obtidas curvas de concentração-resposta para o manool nos anéis aórticos, com endotélio pré-contraído com fenilefrina (Phe) após incubação com Nω-nitro-L-arginina metil éster (L-NAME) ou oxadiazolo[4,3-a]quinoxalina-1-ona (ODQ). Os níveis plasmáticos de óxido nítrico (NOx) foram medidos por ensaio de quimioluminescência. Resultados: Após a administração de manool, a PA se reduziu nos grupos normotenso e hipertenso, e esse efeito foi inibido pelo L-NAME em animais hipertensos apenas na dose de 10 mg/kg. O manool ex vivo promoveu vasorrelaxamento, inibido pela incubação de L-NAME e ODQ ou remoção do endotélio. Os níveis plasmáticos de NOx aumentaram no grupo hipertenso após a administração de manool. O manool induz o relaxamento vascular dependente do endotélio na aorta de ratos, mediado pela via de sinalização NO/cGMP e redução da PA, e também pelo aumento plasmático de NOx. Esses efeitos combinados podem estar envolvidos na modulação da resistência periférica, contribuindo para o efeito anti-hipertensivo do diterpeno. Conclusão: Esses efeitos em conjunto podem estar envolvidos na modulação da resistência periférica, contribuindo para o efeito anti-hipertensivo do diterpeno.


Abstract Background: Many studies have shown that the diterpenoid classes exert a significant effect on the cardiovascular system. Diterpenes, in particular, are among the main compound links to cardiovascular properties such as vasorelaxant, inotropic, diuretic and hypotensive activity. While the manool vasorelaxation mechanism is visible, its effect on blood pressure (BP) is still unknown. Objective: To evaluate the in vivo hypotensive effect of manool and check the ex vivo vasorelaxation effect in rat aortic rings. Methods: The animals were divided randomly into two groups: normotensive and hypertensive. The normotensive group was sham-operated, and the 2K1C model was adopted for the hypertensive group. Invasive BP monitoring was performed for manool tests at different doses (10, 20 and 40 mg/kg). Concentration-response curves for manool were obtained in the aorta rings, with endothelium, pre-contracted with phenylephrine (Phe) after incubation with Nω-nitro-L-arginine methyl ester(L-NAME) or oxadiazole [4,3-a]quinoxalin-1-one (ODQ). Nitric oxide (NOx) plasma levels were measured by chemiluminescence assay. Results: After manool administration, BP was reduced in normotensive and hypertensive groups, and this effect was inhibited by L-NAME in hypertensive animals only in 10 mg/kg dose. Ex vivo manool promoted vasorelaxation, which was inhibited by L-NAME and ODQ incubation or endothelium removal. NOx plasma levels increased in the hypertensive group after manool administration. Manool elicits endothelium-dependent vascular relaxation in rat aorta mediated by the NO/cGMP signaling pathway and BP reduction, also by NOx plasma increase. These combined effects could be involved in modulating peripheral resistance, contributing to the antihypertensive effect of diterpene. Conclusion: These effects together could be involved in modulating peripheral resistance, contributing to the antihypertensive effect of diterpene.


Subject(s)
Animals , Rats , Arterial Pressure , Hypertension/drug therapy , Aorta, Thoracic , Vasodilation , Vasodilator Agents/pharmacology , Blood Pressure , Endothelium, Vascular , Diterpenes/pharmacology , Nitric Oxide/pharmacology
15.
Rev. bras. cir. cardiovasc ; 35(4): 427-436, July-Aug. 2020. tab, graf
Article in English | SES-SP, LILACS, SES-SP | ID: biblio-1137284

ABSTRACT

Abstract Objective: To systematically review the rate of morbidity and mortality associated with the use of E-vita hybrid stent graft and ThoraflexTM in patients undergoing complex aortic surgery. Methods: A comprehensive search was undertaken among the four major databases to identify published data about E-vita or Thoraflex™ in patients undergoing repair of thoracic aortic aneurysms. Results: In total, 28 papers were included in the study, encompassing a total of 2,161 patients (1,919 E-vita and 242 Thoraflex™). Patients undergoing surgery with E-vita or Thoraflex™ were of similar age and sex. The number of patients undergoing non-elective repair with Thoraflex™ was higher than with E-vita (35.2% vs. 28.7%, respectively). Cardiopulmonary bypass time was associated with increasing mortality in E-vita patients, however a meta-analysis of proportions showed higher 30-day mortality, permanent neurological deficit, and one-year mortality for Thoraflex™ patients. Direct statistical comparisons between E-vita and Thoraflex™ was not possible due to heterogeneity of studies. Conclusion: Although there are limited studies available, the available data suggests that mortality and morbidity are lower for the E-vita device in thoracic aortic aneurysm surgery than for Thoraflex™. Long-term data of comparative studies do not yet exist to assess viability of these procedures.


Subject(s)
Humans , Aortic Aneurysm, Thoracic/surgery , Blood Vessel Prosthesis Implantation , Aorta, Thoracic/surgery , Blood Vessel Prosthesis , Stents , Treatment Outcome
16.
Rev. bras. cir. cardiovasc ; 35(3): 402-405, May-June 2020. tab, graf
Article in English | SES-SP, LILACS, SES-SP | ID: biblio-1137255

ABSTRACT

Abstract Type II Aortopulmonary window (APW) accounts for only 10% of total cases of APW, which by itself is a rare congenital anomaly. Various cardiac malformations have been reported to be associated with this rare anomaly. We report one such association of origin of left subclavian artery (LSCA) from left pulmonary artery (LPA) via ductus arteriosus that was surgically repaired.


Subject(s)
Humans , Aortopulmonary Septal Defect/surgery , Aortopulmonary Septal Defect/complications , Aortopulmonary Septal Defect/diagnostic imaging , Subclavian Artery/surgery , Subclavian Artery/diagnostic imaging , Aorta, Thoracic/surgery , Aorta, Thoracic/diagnostic imaging , Pulmonary Artery/surgery , Pulmonary Artery/diagnostic imaging , Lung
17.
Rev. bras. ginecol. obstet ; 42(5): 289-296, May 2020. graf
Article in English | LILACS | ID: biblio-1137828

ABSTRACT

Abstract Intrauterine growth restriction (IUGR) is associated with poor perinatal prognosis and a higher risk of stillbirth, neonatal death, and cerebral palsy. Its detection and the evaluation of its severity by new Doppler velocimetric parameters, such as aortic isthmus (AoI), are of great relevance for obstetrical practice. The AoI is a vascular segment that represents a point of communication between the right and left fetal circulations. It is considered to be a functional arterial shunt that reflects the relationship between the systemic and cerebral impedances, and has recently been proposed as a tool to detect the status of hemodynamic balance and prognosis of IUGR in fetuses. In the present review, we noticed that in healthy fetuses, the AoI net flow is always antegrade, but in fetuses with IUGR the deterioration of placental function leads to progressive reduction in its flow until it becomes mostly retrograde; this point is associated with a drastic reduction in oxygen delivery to the brain. The more impaired the AoI flow is, the greater is the risk of impairment in the Doppler velocimetry of other vessels; and the alterations of the AoI Doppler seem to precede other indicators of severe hypoxemia. Although there seems to be an association between the presence of retrograde flow in the AoI and the risk of long-term neurologic disability, its role in the prediction of perinatal morbi-mortality remains unclear. The AoI Doppler seems to be a promising tool in the management of fetuses with IUGR, but more studies are needed to investigate its employment in clinical practice.


Resumo O crescimento intrauterino restrito (CIUR) está associado a um prognóstico perinatal adverso, com maior risco de óbito intrauterino e neonatal, bem como de paralisia cerebral. Assim, sua detecção e a determinação de sua gravidade por novos parâmetros Dopplervelocimétricos, como o istmo aórtico (IAo), são de fundamental importância na prática obstétrica. O IAo é um segmento vascular que representa um ponto de comunicação entre os sistemas circulatórios fetais esquerdo e direito. É considerado um shunt arterial funcional, capaz de refletir a relação entre as impedâncias dos circuitos cerebral e sistêmico, e foi proposto como uma ferramenta para detecção do status do equilíbrio hemodinâmico e do prognóstico de fetos com CIUR. Na presente revisão, observou-se que, em fetos saudáveis, o fluxo predominante no IAo é sempre anterógrado; mas em fetos com CIUR a deterioração do estágio de insuficiência placentária acarreta reduções progressivas no fluxo ístmico até este apresentar sentido predominantemente retrógrado e levar a uma drástica redução no aporte de oxigênio ao sistema nervoso central. Quanto mais alterado estiver o fluxo no IAo, maior a chance de haver alteração na Dopplervelocimetria de outros vasos; e as alterações no Doppler do IAo parecem preceder outros indicadores de hipoxemia severa. Embora o fluxo retrógrado no IAo pareça se correlacionar com maior risco de alteração no desenvolvimento neurológico a longo prazo, ainda não está claro o seu papel na predição de morbimortalidade perinatal. O Doppler do IAo parece ser um parâmetro promissor no manejo do CIUR; entretanto, mais estudos são necessários para avaliar seu emprego na prática clínica.


Subject(s)
Humans , Female , Pregnancy , Infant, Newborn , Aorta, Thoracic/diagnostic imaging , Ultrasonography, Prenatal , Fetal Growth Retardation/diagnostic imaging , Fetus/diagnostic imaging , Aorta, Thoracic/physiopathology , Blood Flow Velocity , Ultrasonography, Doppler , Fetal Growth Retardation/physiopathology , Fetus/blood supply
18.
Rev. Soc. Peru. Med. Interna ; 33(1): 47-50, ene.-mar. 2020. ilus
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1116250

ABSTRACT

Los aneurismas aórticos corresponden a una dilatación focal de la pared de la arteria que supera el 50% de su diámetro normal. La mayoría de los casos corresponden a la localización abdominal, siendo una pequeña proporción descritos a nivel de la aorta torácica. En este segmento, menos del 10% de los pacientes experimentan síntomas e incluso, la ruptura puede constituir la primera manifestación. Se presenta el caso de una mujer octogenaria con hemoptisis e inestabilidad hemodinámica en la que se realizó el diagnóstico de aneurisma de aorta torácica a través angiotomografía contrastada para luego recibir manejo endovascular de manera exitosa. Dado el pronóstico de esta patología, es vital un adecuado uso de los estudios de imagen para un acertado diagnóstico radiológico que permita un enfoque terapéutico oportuno. (AU)


Aortic aneurysms correspond to a focal dilation of the artery wall that exceeds 50% of its normal diameter. Most cases correspond to the abdominal location, being a small proportion described at the level of the thoracic aorta. In this segment, less than 10% of patients experience symptoms and even rupture may constitute the first manifestation. It is presented an octogenarian woman with hemoptysis and hemodynamic instability in which the diagnosis of thoracic aortic aneurysm was made through contrasting angiotomography and then she receives a successfully endovascular management. Given the prognosis of this pathology, an adequate use of imaging studies is vital for a successful radiological diagnosis that allows for a timely therapeutic approach. (AU)


Subject(s)
Humans , Female , Aged, 80 and over , Aorta, Thoracic/diagnostic imaging , Aortic Aneurysm/diagnosis , Stents , Endovascular Procedures , Hemoptysis
19.
Rev. cir. (Impr.) ; 72(1): 68-71, feb. 2020. ilus
Article in Spanish | LILACS | ID: biblio-1092893

ABSTRACT

Resumen Introducción El secuestro pulmonar es un segmento anormal de tejido pulmonar sin comunicación con el árbol traqueobronquial e irrigado por una arteria aberrante de origen sistémico. El secuestro pulmonar puede ser intralobar o extralobar. Caso Clínico Presentamos el caso de un neonato con dificultad respiratoria debido a secuestro pulmonar. El tratamiento quirúrgico consiste en la resección del segmento pulmonar con la ligadura y corte de su arteria. Se describe el manejo realizado y la revisión de la literatura indexada.


Introduction Pulmonary sequestration is an abnormal segment of lung tissue without communication with the tracheobronchial tree and irrigated by an aberrant artery of systemic origin. Can be intralobar or extralobar. Case report We present the case of a neonate with respiratory distress due to pulmonary sequestration. Surgical treatment consists in the resection of the lung segment with the ligature and cut of its artery. Is describe the management carried out and the review of the indexed literature.


Subject(s)
Humans , Male , Infant, Newborn , Bronchopulmonary Sequestration/surgery , Bronchopulmonary Sequestration/diagnostic imaging , Aorta, Thoracic/abnormalities , Abnormalities, Multiple , Tomography, X-Ray Computed , Bronchopulmonary Sequestration/embryology , Treatment Outcome
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