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J. bras. nefrol ; 41(4): 492-500, Out.-Dec. 2019. tab, graf
Article in English | LILACS (Americas) | ID: biblio-1056600


Abstract Introduction: Intradialytic hypotension (IDH) is a major complication of hemodialysis, with a prevalence of about 25% during hemodialysis sessions, causing increased morbidity and mortality. Objective: To study the effects of sertraline to prevent IDH in hemodialysis patients. Methods: This was a double-blind, crossover clinical trial comparing the use of sertraline versus placebo to reduce intradialytic hypotension. Results: Sixteen patients completed the two phases of the study during a 12-week period. The IDH prevalence was 32%. A comparison between intradialytic interventions, intradialytic symptoms, and IDH episodes revealed no statistical difference in the reduction of IDH episodes (p = 0.207) between the two intervention groups. However, the risk of IDH interventions was 60% higher in the placebo group compared to the sertraline group, and the risk of IDH symptoms was 40% higher in the placebo group compared to the sertraline group. Survival analysis using Kaplan-Meier estimator supported the results of this study. Sertraline presented a number needed to treat (NNT) of 16.3 patients to prevent an episode from IDH intervention and 14.2 patients to prevent an episode from intradialytic symptoms. Conclusion: This study suggests that the use of sertraline may be beneficial to reduce the number of symptoms and ID interventions, although there was no statistically significant difference in the blood pressure levels.

Resumo Introdução: A hipotensão intradialítica (HID) é uma das principais complicações da hemodiálise, com uma prevalência de cerca de 25% durante as sessões de hemodiálise, causando aumento da morbimortalidade. Objetivo: Estudar os efeitos da sertralina na prevenção da HID em pacientes em hemodiálise. Métodos: Este foi um ensaio clínico duplo-cego, cruzado, comparando o uso de sertralina versus placebo para reduzir a hipotensão intradialítica. Resultados: Dezesseis pacientes completaram as duas fases do estudo durante um período de 12 semanas. A prevalência de HID foi de 32%. Uma comparação entre intervenções intradialíticas, sintomas intradialíticos (ID) e episódios de HID não revelou diferença estatística na redução dos episódios de HID (p = 0,207) entre os dois grupos de intervenção. No entanto, o risco de intervenções para HID foi 60% maior no grupo placebo em comparação com o grupo Sertralina, e o risco de sintomas ID foi 40% maior no grupo placebo em comparação com o grupo Sertralina. A análise de sobrevida utilizando o estimador de Kaplan-Meier corroborou os resultados deste estudo. A sertralina apresentou um número necessário para tratar (NNT) de 16,3 pacientes para prevenir um episódio de intervenção de HID e 14,2 pacientes para prevenir um episódio de sintomas intradialíticos. Conclusão: Este estudo sugere que o uso de sertralina pode ser benéfico para reduzir o número de sintomas e intervenções de HID, embora não tenha havido diferença estatisticamente significante nos níveis pressóricos.

Humans , Male , Female , Middle Aged , Aged , Renal Dialysis/adverse effects , Serotonin Uptake Inhibitors/therapeutic use , Sertraline/therapeutic use , Renal Insufficiency/therapy , Hypotension/physiopathology , Placebos/administration & dosage , Blood Pressure/drug effects , Blood Pressure/physiology , Double-Blind Method , Prevalence , Renal Dialysis/mortality , Cross-Over Studies , Renal Insufficiency/complications , Hypotension/prevention & control , Hypotension/epidemiology
Int. j. morphol ; 37(2): 739-743, June 2019. tab, graf
Article in Spanish | LILACS (Americas) | ID: biblio-1002287


La preeclampsia (PE) es un trastorno hipertensivo inducido por el embarazo donde se reduce la presión de la perfusión uterina. Investigaciones avalan el uso de dosis baja de aspirina (DBAAS) y su utilidad en la prevención de PE en gestantes con factores de riesgo. Sus beneficios en modelos animales sometidos a esta reduccción no están determinados. El objetivo de la investigación fue analizar la presión arterial sistémica y los hallazgos morfológicos a nivel renal en fetos de ratas con reducción de la presión de perfusión uterina (RPPU) expuestas a DBAAS en comparación a las no expuestas. Se conformaron cuatro grupos de ratas hembras preñadas Sprague Dawley (n=5). A los 14,5 días post-concepción (dpc), vía quirúrgica se indujo RPPU, ligando arterias uterinas, conformándose el grupo RPPU y el grupo RPPU+DBAAS al que se le administró 5 mg/kg/día de aspirina vía oral. El grupo control lo conformaron las no operadas y el grupo DBAAS se le administró aspirina en igual dosis desde el 14,5 dpc. A los 18,5 dpc, previo a la eutansia se midió la presión arterial sistémica con pletismógrafo caudal Insight v2.11 y se extrajeron los fetos. Se midió la longitud céfalo-caudal (LCC), se procesaron y tiñeron con hematoxilina-eosina, describiéndose cortes histológicos transversales a nivel renal. Se determinó que en la presión arterial media, hubo diferencias significativas entre el grupo RPPU y RPPU+DBAAS (p<0,05). El tamaño de los fetos fue menor en el grupo RPPU (p<0,0001), donde 1 feto presentó hernia umbilical congénita. La cuantificación de vesículas renales también fue menor (p<0,005). En conclusión, la administración de DBAAS disminuye los efectos inducidos por la RPPU en cuanto al tamaño fetal, morfología renal y malformaciones congénitas como hernia umbilical. En cuanto a la presión arterial sistémica, tendría efectos sólo en presión arterial media.

Preeclampsia (PE) is a hypertensive disorder induced by pregnancy where there is a reduction in the uterine perfusion pressure. Research supports the use of low dose aspirin (LDAAS) and its usefulness in the prevention of PE in pregnant women with risk factors. Their benefits in animal models subject to RUPP are not determined. The objective of the investigation was to analyze the systemic blood pressure and the morphological findings at renal level in fetuses of rats with reduction of uterine perfusion pressure (RUPP) exposed to LDAAS compared to those not exposed. Four groups of pregnant female rats Sprague Dawley (n=5) were formed. At 14.5 days post-conception (dpc), surgical RUPP was induced, ligating uterine arteries, with the RUPP group and RUPP+LDAAS group being given 5 mg/kg/day of aspirin orally. The control group was made up of those not operated and the LDAAS group was administered aspirin in the same dose from 14.5 dpc. A 18.5 dpc, prior to euthanasia systemic blood pressure was measured with flow plethysmograph Insight v2.11 and fetuses were extracted. The cephalo-caudal length (CCL) was measured, processed and stained with hematoxylin-eosin, describing transverse histological sections at the kidney level. It was determined that in the mean arterial pressure, there were significant differences between the group RUPP and RUPP+LDAAS (p <0.05). The size of the fetuses was lower in the RUPP group (p <0.0001), where one fetus presented congenital umbilical hernia. The quantification of renal vesicles was also lower (p <0.005). In conclusion, the administration of LDAAS decreases the effects induced by RUPP in terms of fetal size, renal morphology and congenital malformations such as umbilical hernia. Regarding the systemic blood pressure, effects would only mean arterial pressure.

Animals , Female , Pregnancy , Rats , Blood Pressure/drug effects , Aspirin/administration & dosage , Hypertension, Pregnancy-Induced/drug therapy , Perfusion , Regional Blood Flow , Uterus/blood supply , Aspirin/pharmacology , Prospective Studies , Longitudinal Studies , Rats, Sprague-Dawley , Fetus , Arterial Pressure/drug effects
J. bras. nefrol ; 41(2): 266-274, Apr.-June 2019. tab, graf
Article in English | LILACS (Americas) | ID: biblio-1012534


Abstract Refractory hypertension (RfH) is an extreme phenotype of resistant hypertension (RH), being considered an uncontrolled blood pressure besides the use of 5 or more antihypertensive medications, including a long-acting thiazide diuretic and a mineralocorticoid antagonist. RH is common, with 10-20% of the general hypertensives, and its associated with renin angiotensin aldosterone system hyperactivity and excess fluid retention. RfH comprises 5-8% of the RH and seems to be influenced by increased sympathetic activity. RH patients are older and more obese than general hypertensives. It is strongly associated with diabetes, obstructive sleep apnea, and hyperaldosteronism status. RfH is more frequent in women, younger patients and Afro-americans compared to RFs. Both are associated with increased albuminuria, left ventricular hypertrophy, chronic kidney diseases, stroke, and cardiovascular diseases. The magnitude of the white-coat effect seems to be higher among RH patients. Intensification of diuretic therapy is indicated in RH, while in RfH, therapy failure imposes new treatment alternatives such as the use of sympatholytic therapies. In conclusion, both RH and RfH constitute challenges in clinical practice and should be addressed as distinct clinical entities by trained professionals who are capable to identify comorbidities and provide specific, diversified, and individualized treatment.

Resumo A Hipertensão Arterial Refratária (HARf) representa um fenótipo extremo da hipertensão arterial resistente (HAR), sendo considerada a falência ao tratamento apesar do uso de 5 ou mais classes de anti-hipertensivos, incluindo um diurético tiazídico de longa ação e um antagonista mineralocorticoide. A HAR é comum (10-20%) entre os hipertensos em geral, sendo decorrente de hiperatividade do Sistema Renina Angiotensina Aldosterona e retenção hidrossalina. Aqueles com HARf correspondem a 5-8% dos resistentes e parecem sofrer maior influência catecolaminérgica. Os resistentes tendem a ter maior idade, ao sobrepeso e à obesidade. Comorbidades incluem diabetes, apneia obstrutiva do sono e status de hiperaldosteronismo. Refratários são afro-americanos em maior proporção, mais jovens e, predominantemente, mulheres. Ambos são fortemente associados à elevada albuminúria, HVE, doenças cardio e cerebrovasculares, além da doença renal crônica. O fenômeno do jaleco branco parece ser mais evidente nos resistentes. Quanto ao tratamento, a intensificação da terapia diurética está indicada nos resistentes, enquanto na HARf, a falência à terapia impôs novas alternativas de tratamento ("simpaticolíticas"). Em conclusão, tanto a HAR quanto a HARf constituem-se desafios na prática clínica e devem ser abordadas como entidades clínicas distintas por profissionais especialistas que identifiquem comorbidades e venham a prover um tratamento específico, diversificado e individualizado.

Humans , Drug Resistance , Hypertension/drug therapy , Hypertension/epidemiology , Phenotype , Sympatholytics/therapeutic use , Blood Pressure/drug effects , Complementary Therapies , Alcohol Drinking/adverse effects , Exercise , Smoking/adverse effects , Prevalence , Blood Pressure Monitoring, Ambulatory , Diet, Sodium-Restricted , Diuretics/pharmacology , Dietary Approaches To Stop Hypertension , Hypertension/diagnosis , Hypertension/physiopathology , Antihypertensive Agents/pharmacology
Acta cir. bras ; 34(5): e201900505, 2019. graf
Article in English | LILACS (Americas) | ID: biblio-1010872


Abstract Purpose: To evaluate the cardioprotective response of the pharmacological modulation of β-adrenergic receptors (β-AR) in animal model of cardiac ischemia and reperfusion (CIR), in spontaneously hypertensive (SHR) and normotensive (NWR) rats. Methods: CIR was induced by the occlusion of left anterior descendent coronary artery (10 min) and reperfusion (75 min). The SHR was treated with β-AR antagonist atenolol (AT, 10 mg/kg, IV) 5 min before CIR, and NWR were treated with β-AR agonist isoproterenol (ISO, 0.5 mg/kg, IV) 5 min before CIR. Results: The treatment with AT increased the incidence of VA, AVB and LET in SHR, suggesting that spontaneous cardioprotection in hypertensive animals was abolished by blockade of β-AR. In contrast, the treatment with ISO significantly reduced the incidence of ventricular arrhythmia, atrioventricular blockade and lethality in NWR (30%, 20% and 20%, respectively), suggesting that the activation of β-AR stimulate cardioprotection in normotensive animals. Serum CK-MB were higher in SHR/CIR and NWR/CIR compared to respective SHAM group (not altered by treatment with AT or ISO). Conclusion: The pharmacological modulation of β-AR could be a new cardioprotective strategy for the therapy of myocardial dysfunctions induced by CIR related to cardiac surgery and cardiovascular diseases.

Animals , Male , Atenolol/pharmacology , Cardiotonic Agents/pharmacology , Myocardial Reperfusion Injury/drug therapy , Receptors, Adrenergic, beta/drug effects , Adrenergic beta-Agonists/pharmacology , Adrenergic beta-1 Receptor Antagonists/pharmacology , Isoproterenol/pharmacology , Rats, Inbred SHR , Time Factors , Blood Pressure/drug effects , Biomarkers/blood , Myocardial Reperfusion Injury/physiopathology , Myocardial Reperfusion Injury/blood , Reproducibility of Results , Treatment Outcome , Creatine Kinase, MB Form/blood , Heart Function Tests
Int. j. morphol ; 36(3): 1016-1021, Sept. 2018. tab, graf
Article in English | LILACS (Americas) | ID: biblio-954224


To determine the effects of 70 % ethanolic extract of Eleutherine bulbosa (Mill.) L. bulbs contained naphtoquinone in blood pressure and lipids profile level of ovariectomized rats. Thin layer chromatography was performed to analyze the content of the Eleutherine bulbosa (Mill.) bulbs extracts using Chloroform : Methanol (7:1) as eluent. This study used white female Sprague-Dawley rats which were divided into 6 groups: SHAM and OVX, both given 0.5 % carboxymethyl cellulose; the positive control group that was given tamoxifen (0.36 mg/200 g B.W.); the three various of doses of extract namely dose 1, 2, and 3 that were given 8, 12, and 18 mg/200 g BW respectively on day 29 until 50. All groups were ovariectomized on day 1, except sham group. Measurement of blood pressure were performed on the day before ovariectomy using non-invasive tool CODA®; and on the second, third, and fourth weeks post-ovariectomy. Three weeks after treatment of hypoestrogen rats by the dose 18 mg/200 g B.W, Eleutherine bulbosa extracts could decrease the systolic blood pressure level to 28.06 %, the diastolic to 30.47 %. Lipid profile of Dose 3 also showed recovery of Triglyceride, LDL and also Total Cholesterol. Eleutherine bulbosa extracts could improve blood pressure of ovariectomized rats by controlling lipids profile level.

Para determinar los efectos del 70 % de extracto etanólico de Eleutherine bulbosa (Mill.) L. en bulbos que contenían naftoquinona, se analizó la presión arterial de ratas ovariectomizadas. Se realizó un estudio de cromatografía de capa fina para analizar el contenido de los extractos de bulbos de Eleutherine bulbosa (Mill.) usando cloroformo:metanol (7:1) como diluyente. En este estudio se utilizaron ratas blancas Sprague-Dawley hembras, que se dividieron en 6 grupos: SHAM y OVX, ambos grupos fueron administrados con carboximetilcelulosa al 0,5 %; grupo control positivo, recibió tamoxifeno (0,36 mg / 200 g de B.W.); y tres grupos restantes, que recibieron tres dosis diferentes de extracto, es decir, dosis 1, 2 y 3 a las que se les administró 8, 12 y 18 mg / 200 g de por peso, respectivamente el día 29 hasta el día 50. Todos los grupos fueron sometidos a ovariectomía en el día 1, excepto el grupo simulado. La medición de la presión arterial se realizó el día anterior a la ovariectomía con la herramienta no invasiva CODA®, y, posteriormente, en la segunda, tercera y cuarta semanas de realizada la ovariectomía. Tres semanas después del tratamiento aplicado a las ratas hipoestrógenas, con la dosis de 18 mg / 200 g por peso, los extractos de Eleutherine bulbosa podrían disminuir el nivel de presión arterial sistólica al 28,06 %, y la diastólica al 30,47 %. La dosis 3 del perfil lipídico mostró mejoría en los niveles de Triglicéridos, LDL y Colesterol Total. Los extractos de Eleutherine bulbosa podrían mejorar la presión sanguínea de ratas ovariectomizadas controlando el nivel del perfil lipídico.

Animals , Female , Rats , Blood Pressure/drug effects , Plant Extracts/pharmacology , Naphthoquinones/pharmacology , Iridaceae/chemistry , Plant Extracts/chemistry , Ovariectomy , Chromatography, Thin Layer , Naphthoquinones/analysis , Rats, Sprague-Dawley , Estrogens/deficiency , Lipids/analysis
Rev. latinoam. enferm. (Online) ; 26: e3102, 2018. graf
Article in English | LILACS (Americas) | ID: biblio-978597


Objective to identify the predictive variables or the massive transfusion triggers in severely traumatized patients through the existing scales. Method a review of the literature was carried out using the Scoping Review method across the electronic databases CINAHL, MEDLINE, LILACS, the Cochrane and IBECS libraries, and the Google Scholar search tool. Results in total, 578 articles were identified in the search and the 36 articles published in the last ten years were included, of which 29 were original articles and 7 review articles. From the analysis, scales for massive transfusion and their predictive triggers were examined. Conclusion the absence of universal criteria regarding the massive transfusion triggers in traumatized patients has led to the development of different scales, and the studies on their validation are considered relevant for the studies about when to initiate this strategy.

Objetivo identificar as variáveis preditivas ou os desencadeantes de transfusão maciça em pacientes com trauma grave através das escalas existentes. Método foi realizada uma revisão da literatura utilizando o método Scoping Review, nas bases de dados eletrônicas CINAHL, MEDLINE, LILACS, nas bibliotecas Cochrane e IBECS, e a ferramenta de busca do Google Scholar. Resultados foram identificados 578 artigos na pesquisa no total, dos quais foram incluídos os 36 artigos publicados nos últimos dez anos, sendo 29 artigos originais e 7 artigos de revisão. A partir da análise, foram examinadas as escalas de transfusão maciça e seus desencadeantes preditivos. Conclusão a falta de critérios universais com relação aos desencadeadores de transfusão em maciça em pacientes traumatizados levou à criação de diferentes escalas, sendo os estudos sobre sua validação considerados importantes para as estudos sobre quando iniciar essa estratégia.

Objetivo identificar las variables predictivas o los triggers de transfusión masiva en el paciente traumatizado grave a través de las escalas existentes. Método se realizó una revisión de la literatura mediante el método Scoping Review, en las bases de datos electrónicas CINAHL, MEDLINE, LILACS, las bibliotecas Cochrane e IBECS, y el buscador Google Scholar. Resultados un total de 578 artículos fueron identificados en la búsqueda, de los cuales, se incluyeron un total de 36 publicados en los últimos diez años, distribuidos en 29 originales y 7 de revisión. Del análisis, se examinaron las escalas de transfusión masiva y sus triggers predictivos. Conclusión la inexistencia de criterios universales respecto a los triggers de transfusión masiva en el paciente traumatizado ha traído consigo la creación de diferentes escalas, donde los estudios de validación de las mismas se detectan como relevantes para la investigación sobre cuando iniciar esta estrategia.

Humans , Blood Pressure/drug effects , Blood Transfusion/methods , Emergency Medical Services , Hemorrhage/therapy
Acta cir. bras ; 32(8): 662-672, Aug. 2017. tab, graf
Article in English | LILACS (Americas) | ID: biblio-886229


Abstract Purpose: To determine if the combination of lidocaine with epinephrine or gamma globulin would decrease the rate or reduce the amount of local absorption of lidocaine through the airway. Methods: Twenty adult male cats were randomly and evenly distributed into four groups: 1) Group LG: lidocaine administered with gamma globulin; 2) Group LS: lidocaine administered with physiological saline); 3) Group LE: lidocaine administered with epinephrine; 4) Group C: control group. Invasive blood pressure, heart rate, and concentration of lidocaine were recorded before and after administration. Results: The peak of plasma concentrations appeared difference (Group LG: 1.39 ± 0.23 mg/L; Group LS: 1.47 ± 0.29 mg/L and Group LE: 0.99 ± 0.08 mg/L). Compared to Group C, there were significant differences in the average heart rate of Groups LG, LS, and LE (P < 0.05). The average systolic blood pressures were significantly different when each group was compared to Group C (P < 0.05). The biological half-life, AUC0-120, peak time, and half-life of absorption among the three groups have not presented statistically significant differences (P > 0.05). Conclusion: Administering lidocaine in combination with gamma globulin through airway causes significant decrease the rate and reduce the amount of local absorption of lidocaine in cats.

Animals , Male , Cats , gamma-Globulins/pharmacokinetics , Epinephrine/pharmacokinetics , Adrenergic beta-Agonists/pharmacokinetics , Respiratory Tract Absorption/drug effects , Anesthetics, Local/pharmacokinetics , Lidocaine/pharmacokinetics , Reference Values , Time Factors , Trachea/drug effects , Blood Pressure/drug effects , Bronchoscopy/methods , gamma-Globulins/administration & dosage , Epinephrine/administration & dosage , Random Allocation , Reproducibility of Results , Adrenergic beta-Agonists/administration & dosage , Drug Combinations , Heart Rate/drug effects , Anesthetics, Local/administration & dosage , Anesthetics, Local/blood , Lidocaine/administration & dosage , Lidocaine/blood
Braz. j. med. biol. res ; 50(4): e5520, 2017. graf
Article in English | LILACS (Americas) | ID: biblio-839279


This study investigated the influence of antihypertensive drugs, such as angiotensin-converting enzyme inhibitors (ACEIs), AT1 receptor blockers (ARBs), voltage-gated L-type calcium channel blockers, and mineralocorticoid receptor antagonists (MRAs), on the effects of angiotensin-(1-7) [Ang-(1-7)] on aorta and coronary arteries from pressure-overloaded rats. Pressure overload was induced by abdominal aortic banding (AB). To evaluate the role of antihypertensive drugs on the effect of Ang-(1-7), AB male Wistar rats weighing 250–300 g were treated with vehicle or low doses (5 mg·kg-1·day-1, gavage) of losartan, captopril, amlodipine, or spironolactone. Isolated aortic rings and isolated perfused hearts under constant flow were used to evaluate the effect of Ang-(1-7) in thoracic aorta and coronary arteries, respectively. Ang-(1-7) induced a significant relaxation in the aorta of sham animals, but this effect was reduced in the aortas of AB rats. Chronic treatments with losartan, captopril or amlodipine, but not with spironolactone, restored the Ang-(1-7)-induced aorta relaxation in AB rats. The coronary vasodilatation evoked by Ang-(1-7) in sham rats was blunted in hypertrophic rats. Only the treatment with losartan restored the coronary vasodilatory effect of Ang-(1-7) in AB rat hearts. These data support a beneficial vascular effect of an association of Ang-(1-7) and some antihypertensive drugs. Thus, this association may have potential as a new therapeutic strategy for cardiovascular diseases.

Animals , Male , Angiotensin I/pharmacology , Antihypertensive Agents/pharmacology , Aorta, Abdominal/drug effects , Coronary Vessels/drug effects , Peptide Fragments/pharmacology , Amlodipine/pharmacology , Angiotensin II Type 1 Receptor Blockers/pharmacology , Angiotensin-Converting Enzyme Inhibitors/pharmacology , Blood Pressure/drug effects , Calcium Channel Blockers/pharmacology , Captopril/pharmacology , Losartan/pharmacology , Mineralocorticoid Receptor Antagonists/pharmacology , Models, Animal , Rats, Wistar , Reproducibility of Results , Spironolactone/pharmacology , Time Factors , Vasoconstriction/drug effects , Vasodilation/drug effects
Yonsei Medical Journal ; : 105-113, 2017.
Article in English | WPRIM (Western Pacific) | ID: wprim-65056


PURPOSE: Urapidil is putatively effective for patients with hypertension and acute heart failure, although randomized controlled trials thereon are lacking. We investigated the efficacy and safety of intravenous urapidil relative to that of nitroglycerin in older patients with hypertension and heart failure in a randomized controlled trial. MATERIALS AND METHODS: Patients (>60 y) with hypertension and heart failure were randomly assigned to receive intravenous urapidil (n=89) or nitroglycerin (n=91) for 7 days. Hemodynamic parameters, cardiac function, and safety outcomes were compared. RESULTS: Patients in the urapidil group had significantly lower mean systolic blood pressure (110.1±6.5 mm Hg) than those given nitroglycerin (126.4±8.1 mm Hg, p=0.022), without changes in heart rate. Urapidil was associated with improved cardiac function as reflected by lower N terminal-pro B type natriuretic peptide after 7 days (3311.4±546.1 ng/mL vs. 4879.1±325.7 ng/mL, p=0.027) and improved left ventricular ejection fraction (62.2±3.4% vs. 51.0±2.4%, p=0.032). Patients given urapidil had fewer associated adverse events, specifically headache (p=0.025) and tachycardia (p=0.004). The one-month rehospitalization and all-cause mortality rates were similar. CONCLUSION: Intravenous administration of urapidil, compared with nitroglycerin, was associated with better control of blood pressure and preserved cardiac function, as well as fewer adverse events, for elderly patients with hypertension and acute heart failure.

Acute Disease , Aged , Antihypertensive Agents/administration & dosage , Blood Pressure/drug effects , Cause of Death , Female , Heart Failure/drug therapy , Heart Rate/drug effects , Hemodynamics , Humans , Hypertension/drug therapy , Injections, Intravenous , Male , Middle Aged , Natriuretic Peptide, Brain/blood , Nitroglycerin/administration & dosage , Peptide Fragments/blood , Piperazines/administration & dosage , Ventricular Function, Left/drug effects
Ciênc. cuid. saúde ; 15(2): 321-327, Abr.-Jun. 2016. tab
Article in Portuguese | LILACS (Americas), BDENF | ID: biblio-974840


RESUMO Atualmente as doenças crônicas não transmissíveis são as principais causas de morte no mundo. Consideradas doenças multifatoriais, têm em comum fatores de riscos modificáveis tais como inatividade física, colesterol elevado, excesso de peso, tabagismo, consumo excessivo de bebidas alcoólicas e alimentação não saudável. Com o objetivo de verificar o impacto por um programa de Gerenciamento de Doenças Crônicas, após dois anos de acompanhamento, surgiu esta pesquisa. Trata-se de programa desenvolvido com um grupo de clientes de uma autogestão localizada no estado de São Paulo. É um estudo transversal realizado durante os anos de 2014-2015 com dados de prontuário eletrônico que foram comparados parâmetros clínicos e hábitos de vida de 1.509 indivíduos participantes de um programa de gerenciamento de doenças em dois momentos: na entrada ao programa e após dois anos de participação. Observaram-se resultados satisfatórios na melhora de parâmetros clínicos relacionados aos níveis pressóricos e à dosagem de glicemia em jejum, assim como diminuição do sedentarismo em indivíduos abaixo dos 60 anos.

RESUMEN Actualmente las enfermedades crónicas no transmisibles son las principales causas de muerte en todo el mundo. Consideradas enfermedades multifactoriales, tienen en común factores de riesgo modificables, tales como inactividad física, colesterol alto, sobrepeso, tabaco, exceso de alcohol y alimentación poco sana. Con el objetivo de averiguar el impacto por un programa de Gestión de Enfermedades Crónicas, tras dos años de acompañamiento, se hizo esta investigación. Se trata de un programa desarrollado con un grupo de clientes de una autogestión ubicada en el estado de São Paulo, Brasil. Es un estudio transversal realizado durante los años de 2014-2015 con datos de registros médicos electrónicos, comparándose los parámetros clínicos y hábitos de vida de 1.509 personas que participan en un programa de gestión de enfermedades en dos ocasiones: cuando entran en el programa y después de dos años de participación. Se observaron resultados satisfactorios en la mejora de los parámetros clínicos relacionados con los niveles de presión arterial y a la dosificación de glucemia en ayunas, así como la disminución de la inactividad física en personas con edad abajo de 60 años.

ABSTRACT Currently, non-transmissible chronic diseases are leading causes of death worldwide. Considered as multifactorial diseases, they have common modifiable risk factors such as physical inactivity, high cholesterol, overweight, smoking, excessive alcohol consumption, and unhealthy diets. Aiming at verifying the impact of theChronic Disease Management program, this study arose after two years of follow-up. This is a program developed with a group of customers in a self-management platform in the state of São Paulo. This was a cross-sectional study carried out during 2014 and 2015 with electronic medical record data through the comparison ofthe clinical and lifestyle parameters of 1,509 individuals participating in a disease management program in two moments: at the program'sentry and two years after participation. Satisfactory results in the improvement of clinical parameters related to blood pressure and blood glucose levels in fasting were observed as well as decreased physical inactivity in individuals under 60 years of age.

Humans , Male , Female , Middle Aged , Aged , Health Programs and Plans/standards , Chronic Disease/nursing , Prepaid Health Plans/standards , Health Promotion/standards , Tobacco Use Disorder/prevention & control , Blood Glucose/analysis , Blood Pressure/drug effects , Aging/drug effects , Alcohol Drinking/adverse effects , Cholesterol/analysis , Cause of Death/trends , Glycemic Index/drug effects , Diabetes Mellitus, Type 2/nursing , Diet/statistics & numerical data , Overweight/metabolism , Electronic Health Records/statistics & numerical data , Arterial Pressure/drug effects , Noncommunicable Diseases/classification , Hypertension/nursing , Motor Activity/drug effects
Acta cir. bras ; 31(5): 338-345, May 2016. tab, graf
Article in English | LILACS (Americas) | ID: lil-783802


ABSTRACT PURPOSE: To investigate the myocardial ischemia-reperfusion with sevoflurane anesthetic preconditioning (APC) would present beneficial effects on autonomic and cardiac function indexes after the acute phase of a myocardial ischemia-reperfusion. METHODS: Twenty Wistar rats were allocated in three groups: control (CON, n=10), myocardial infarction with sevoflurane (SEV, n=5) and infarcted without sevoflurane (INF, n=5). Myocardial ischemia (60 min) and reperfusion were performed by temporary coronary occlusion. Twenty-one days later, the systolic and diastolic function were evaluated by echocardiography; spectral analysis of the systolic arterial pressure (SAPV) and heart rate variability (HRV) were assessed. After the recording period, the infarct size (IS) was evaluated. RESULTS: The INF group presented greater cardiac dysfunction and increased sympathetic modulation of the SAPV, as well as decreased alpha index and worse vagal modulation of the HRV. The SEV group exhibited attenuation of the systolic and diastolic dysfunction and preserved vagal modulation (square root of the mean squared differences of successive R-R intervals and high frequency) of HRV, as well as a smaller IS. CONCLUSION: Sevoflurane preconditioning better preserved the cardiac function and autonomic modulation of the heart in post-acute myocardial infarction period.

Animals , Male , Autonomic Nervous System/drug effects , Myocardial Ischemia/physiopathology , Anesthetics, Inhalation/pharmacology , Ischemic Preconditioning, Myocardial/methods , Methyl Ethers/pharmacology , Myocardial Infarction/physiopathology , Pulse , Autonomic Nervous System/physiology , Time Factors , Blood Pressure/drug effects , Blood Pressure/physiology , Echocardiography , Random Allocation , Rats, Wistar , Myocardial Ischemia/etiology , Myocardial Ischemia/diagnostic imaging , Models, Animal , Heart Rate/drug effects , Heart Rate/physiology , Myocardial Infarction/pathology , Myocardial Infarction/prevention & control , Myocardial Infarction/diagnostic imaging
Braz. j. med. biol. res ; 49(2): e5007, 2016. tab, graf
Article in English | LILACS (Americas) | ID: lil-766980


Metabolic acidosis has profound effects on vascular tone. This study investigated the in vivo effects of acute metabolic acidosis (AMA) and chronic metabolic acidosis (CMA) on hemodynamic parameters and endothelial function. CMA was induced by ad libitum intake of 1% NH4Cl for 7 days, and AMA was induced by a 3-h infusion of 6 M NH4Cl (1 mL/kg, diluted 1:10). Phenylephrine (Phe) and acetylcholine (Ach) dose-response curves were performed by venous infusion with simultaneous venous and arterial blood pressure monitoring. Plasma nitrite/nitrate (NOx) was measured by chemiluminescence. The CMA group had a blood pH of 7.15±0.03, which was associated with reduced bicarbonate (13.8±0.98 mmol/L) and no change in the partial pressure of arterial carbon dioxide (PaCO2). The AMA group had a pH of 7.20±0.01, which was associated with decreases in bicarbonate (10.8±0.54 mmol/L) and PaCO2 (47.8±2.54 to 23.2±0.74 mmHg) and accompanied by hyperventilation. Phe or ACh infusion did not affect arterial or venous blood pressure in the CMA group. However, the ACh infusion decreased the arterial blood pressure (ΔBP: -28.0±2.35 mm Hg [AMA] to -4.5±2.89 mmHg [control]) in the AMA group. Plasma NOx was normal after CMA but increased after AMA (25.3±0.88 to 31.3±0.54 μM). These results indicate that AMA, but not CMA, potentiated the Ach-induced decrease in blood pressure and led to an increase in plasma NOx, reinforcing the effect of pH imbalance on vascular tone and blood pressure control.

Animals , Male , Rabbits , Acetylcholine/administration & dosage , Acidosis/physiopathology , Blood Pressure/drug effects , Endothelium, Vascular/physiopathology , Hypotension/chemically induced , Acute Disease , Acid-Base Imbalance/metabolism , Acidosis/chemically induced , Acidosis/metabolism , Blood Pressure Determination , Bicarbonates/blood , Blood Pressure/physiology , Chronic Disease , Carbon Dioxide/analysis , Endothelium, Vascular/metabolism , Hemodynamics/physiology , Hyperventilation/metabolism , Luminescence , Nitrates/blood , Nitric Oxide/metabolism , Nitrites/blood
Clinics ; 70(12): 804-809, Dec. 2015. tab, graf
Article in English | LILACS (Americas) | ID: lil-769713


OBJECTIVES: Inhalant anesthesia induces dose-dependent cardiovascular depression, but whether fluid responsiveness is differentially influenced by the inhalant agent and plasma volemia remains unknown. The aim of this study was to compare the effects of isoflurane, sevoflurane and desflurane on pulse pressure variation and stroke volume variation in pigs undergoing hemorrhage. METHODS: Twenty-five pigs were randomly anesthetized with isoflurane, sevoflurane or desflurane. Hemodynamic and echocardiographic data were registered sequentially at minimum alveolar concentrations of 1.00 (M1), 1.25 (M2), and 1.00 (M3). Then, following withdrawal of 30% of the estimated blood volume, these data were registered at a minimum alveolar concentrations of 1.00 (M4) and 1.25 (M5). RESULTS: The minimum alveolar concentration increase from 1.00 to 1.25 (M2) decreased the cardiac index and increased the central venous pressure, but only modest changes in mean arterial pressure, pulse pressure variation and stroke volume variation were observed in all groups from M1 to M2. A significant decrease in mean arterial pressure was only observed with desflurane. Following blood loss (M4), pulse pressure variation, stroke volume variation and central venous pressure increased (p <0.001) and mean arterial pressure decreased in all groups. Under hypovolemia, the cardiac index decreased with the increase of anesthesia depth in a similar manner in all groups. CONCLUSION: The effects of desflurane, sevoflurane and isoflurane on pulse pressure variation and stroke volume variation were not different during normovolemia or hypovolemia.

Animals , Female , Male , Anesthetics, Inhalation/pharmacology , Blood Pressure/drug effects , Hypovolemia/physiopathology , Stroke Volume/drug effects , Dose-Response Relationship, Drug , Hemorrhage/physiopathology , Isoflurane/analogs & derivatives , Isoflurane/pharmacology , Methyl Ethers/pharmacology , Random Allocation , Reference Values , Swine , Time Factors
Arq. bras. cardiol ; 105(6): 597-605, Dec. 2015. tab, graf
Article in Portuguese | LILACS (Americas) | ID: lil-769538


Abstract Background: Studies suggest that statins have pleiotropic effects, such as reduction in blood pressure, and improvement in endothelial function and vascular stiffness. Objective: To analyze if prior statin use influences the effect of renin-angiotensin-aldosterone system inhibitors on blood pressure, endothelial function, and vascular stiffness. Methods: Patients with diabetes and hypertension with office systolic blood pressure ≥ 130 mmHg and/or diastolic blood pressure ≥ 80 mmHg had their antihypertensive medications replaced by amlodipine during 6 weeks. They were then randomized to either benazepril or losartan for 12 additional weeks while continuing on amlodipine. Blood pressure (assessed with ambulatory blood pressure monitoring), endothelial function (brachial artery flow-mediated dilation), and vascular stiffness (pulse wave velocity) were evaluated before and after the combined treatment. In this study, a post hoc analysis was performed to compare patients who were or were not on statins (SU and NSU groups, respectively). Results: The SU group presented a greater reduction in the 24-hour systolic blood pressure (from 134 to 122 mmHg, p = 0.007), and in the brachial artery flow-mediated dilation (from 6.5 to 10.9%, p = 0.003) when compared with the NSU group (from 137 to 128 mmHg, p = 0.362, and from 7.5 to 8.3%, p = 0.820). There was no statistically significant difference in pulse wave velocity (SU group: from 9.95 to 9.90 m/s, p = 0.650; NSU group: from 10.65 to 11.05 m/s, p = 0.586). Conclusion: Combined use of statins, amlodipine, and renin-angiotensin-aldosterone system inhibitors improves the antihypertensive response and endothelial function in patients with hypertension and diabetes.

Resumo Fundamentos: Estudos sugerem que as estatinas possuem efeitos pleotrópicos, como melhora da função endotelial, da rigidez vascular e redução da pressão arterial. Objetivo: Analisar se o uso prévio de estatina influenciou o efeito sobre a pressão arterial, a função endotelial e a rigidez vascular de drogas inibidoras do sistema renina-angiotensina-aldosterona. Métodos: Pacientes hipertensos e diabéticos com pressão arterial de consultório sistólica ≥ 130 mmHg e/ou diastólica ≥ 80 mmHg tiveram suas medicações anti-hipertensivas substituídas por anlodipino durante 6 semanas. Em seguida, foram randomizados para associação de benazepril ou losartana por mais 12 semanas. Pressão arterial (através da monitorização ambulatorial da pressão arterial), função endotelial (dilatação mediada por fluxo da artéria braquial) e rigidez vascular (velocidade da onda de pulso) foram avaliados antes e após o tratamento combinado. Neste trabalho, uma análise post-hoc foi realizada para comparar pacientes que vinham (grupo CE) ou não (grupo SE) em uso de estatina. Resultados: O grupo CE apresentou maior redução na pressão arterial sistólica nas 24 horas (134 para 122 mmHg, p = 0,007) e na dilatação mediada por fluxo da artéria braquial (6,5 para 10,9%, p = 0,003) quando comparado com o grupo SE (137 para 128 mmHg, p = 0,362, e 7,5 para 8,3%, p = 0,820). Não houve diferença estatisticamente significante na velocidade de onda de pulso (grupo CE 9,95 para 9,90 m/s, p = 0,650 e grupo SE 10,65 para 11,05 m/s, p = 0,586). Conclusão: O uso combinado de estatinas, anlodipino e inibidores do sistema renina-angiotensina-aldosterona melhora a resposta anti-hipertensiva e a função endotelial em pacientes hipertensos e diabéticos.

Female , Humans , Male , Middle Aged , Amino Acids/pharmacology , Angiotensin-Converting Enzyme Inhibitors/pharmacology , Antihypertensive Agents/pharmacology , /drug therapy , Endothelium, Vascular/drug effects , Hypertension/drug therapy , Renin-Angiotensin System/drug effects , Amino Acids/therapeutic use , Amlodipine/pharmacology , Amlodipine/therapeutic use , Angiotensin-Converting Enzyme Inhibitors/therapeutic use , Antihypertensive Agents/therapeutic use , Blood Pressure Monitoring, Ambulatory , Benzazepines/pharmacology , Benzazepines/therapeutic use , Blood Pressure/drug effects , Brachial Artery/drug effects , Endothelium, Vascular/physiology , Losartan/pharmacology , Losartan/therapeutic use , Pulse Wave Analysis , Statistics, Nonparametric , Time Factors , Treatment Outcome , Vascular Stiffness/drug effects
Clinics ; 70(11): 751-757, Nov. 2015. tab, graf
Article in English | LILACS (Americas) | ID: lil-766151


OBJECTIVES: This study was conducted to determine whether the blood pressure-lowering effect of Nigella sativa might be mediated by its effects on nitric oxide, angiotensin-converting enzyme, heme oxygenase and oxidative stress markers. METHODS: Twenty-four adult male Sprague-Dawley rats were divided equally into 4 groups. One group served as the control (group 1), whereas the other three groups (groups 2-4) were administered L-NAME (25 mg/kg, intraperitoneally). Groups 3 and 4 were given oral nicardipine daily at a dose of 3 mg/kg and Nigella sativa oil at a dose of 2.5 mg/kg for 8 weeks, respectively, concomitantly with L-NAME administration. RESULTS: Nigella sativa oil prevented the increase in systolic blood pressure in the L-NAME-treated rats. The blood pressure reduction was associated with a reduction in cardiac lipid peroxidation product, NADPH oxidase, angiotensin-converting enzyme activity and plasma nitric oxide, as well as with an increase in heme oxygenase-1 activity in the heart. The effects of Nigella sativa on blood pressure, lipid peroxidation product, nicotinamide adenine dinucleotide phosphate oxidase and angiotensin-converting enzyme were similar to those of nicardipine. In contrast, L-NAME had opposite effects on lipid peroxidation, angiotensin-converting enzyme and NO. CONCLUSION: The antihypertensive effect of Nigella sativa oil appears to be mediated by a reduction in cardiac oxidative stress and angiotensin-converting enzyme activity, an increase in cardiac heme oxygenase-1 activity and a prevention of plasma nitric oxide loss. Thus, Nigella sativa oil might be beneficial for controlling hypertension.

Animals , Male , Antihypertensive Agents/pharmacology , Blood Pressure/drug effects , Hypertension/drug therapy , Nigella sativa/chemistry , Plant Oils/pharmacology , Antihypertensive Agents/administration & dosage , Heme Oxygenase (Decyclizing)/metabolism , Hypertension/chemically induced , Models, Animal , Malondialdehyde/analysis , NADPH Oxidases/metabolism , NG-Nitroarginine Methyl Ester , Nicardipine/administration & dosage , Nicardipine/pharmacology , Nitric Oxide/blood , Oxidative Stress/drug effects , Peptidyl-Dipeptidase A/metabolism , Rats, Sprague-Dawley
Dental press j. orthod. (Impr.) ; 20(4): 91-98, July-Aug. 2015. tab, ilus
Article in English | LILACS (Americas) | ID: lil-757424


Angle Class III malocclusion is characterized by anteroposterior dental discrepancy which might be associated or not with skeletal changes. Class III molar relationship is associated with vertical or lingually tipped mandibular incisors and a usually concave profile. These characteristics seriously affect facial esthetics and most frequently are the reason why patients seek orthodontic treatment. This case was presented to the committee of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as part of the requisites to become a BBO Diplomate.

A má oclusão de Classe III de Angle é caracterizada por uma discrepância dentária anteroposterior, que pode ou não estar acompanhada por alterações esqueléticas. Observa-se uma relação molar de Classe III associada ao posicionamento vertical ou retroinclinado dos incisivos inferiores e, geralmente, perfil facial côncavo. Esse aspecto gera grande comprometimento estético na face, sendo justamente esse o fator que, na maioria das vezes, motiva o paciente a procurar pelo tratamento ortodôntico. O presente caso clínico foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO) como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.

Animals , Blood Pressure/drug effects , Dogs , Hydroxyethyl Starch Derivatives/pharmacology , Hypotension/veterinary , Isoflurane/adverse effects , Isotonic Solutions/pharmacology , Anesthetics, Inhalation/adverse effects , Dog Diseases/drug therapy , Hydroxyethyl Starch Derivatives/administration & dosage , Hypotension/therapy , Isoflurane/pharmacology , Plasma Substitutes/administration & dosage , Plasma Substitutes/therapeutic use