Navegando por Palavras-chave "ultra-sonografia"

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    Color doppler evaluation of the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow
    (Academia Brasileira de Neurologia - ABNEURO, 2009-06-01) Aranha, Carlos Alberto [UNIFESP]; Lederman, Henrique Manoel [UNIFESP]; Segre, Conceição A.m. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Hospital Israelita Albert Einstein
    OBJECTIVE: The purpose of this study was to evaluate with Color Doppler the influence of type of delivery, sex, postnatal age and time post feeding on full term healthy newborns cerebral blood flow. METHOD: 50 newborns were studied. The Doppler parameters, peak-systolic velocity, end-diastolic velocity, mean velocity, pulsatility index and resistance index, were measured in the anterior cerebral artery, middle cerebral artery, posterior cerebral artery, and basilar artery. The data were compared and analyzed by statistical tests. Informed consent was obtained from all parents, and the study was approved by institutional ethical committee and review board. RESULTS: We observed not statistically significant differences on cerebral blood flow Doppler parameters in relation to type of delivery, sex, postnatal age and feeding in full term healthy newborns. CONCLUSION: We believe that the knowledge of these cerebral hemodynamic profile of newborns in the first days of life can contribute in an accurate interpretation of cranial Doppler abnormal findings when pathologic flow velocities are analyzed.
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    Eficácia da compressão pneumática intermitente (CPI) nos membros inferiores sobre o fluxo sanguíneo das veias femorais comuns
    (Sociedade Brasileira de Angiologia e de Cirurgia Vascular (SBACV), 2008-12-01) Figueiredo, Marcondes [UNIFESP]; Simão, Patrícia Polizel; Pereira, Beethoven Marques Alves; Penha-silva, Nilson; Universidade Federal de São Paulo (UNIFESP); Universidade Federal de Uberlândia; Southern Illinois University; University of Texas Medical Branch; UFU Instituto de Genética e Bioquímica
    BACKGROUND: Prophylaxis of venous thromboembolism, a very common post-surgical complication, can be made pharmacologically or via mechanical methods, such as the use of anti-thrombosis socks and intermittent pneumatic compression (IPC). IPC is a mechanical method of prophylaxis that deserves the attention of the medical community. OBJECTIVE: To evaluate the effect of IPC on the blood flow of common femoral veins in feet, legs and thighs of healthy adults. METHODS: The sample was comprised of 10 volunteers (seven females and three males), adults (20-40 years), without history of venous thromboembolism. After a rest period (10 min), with the patient in the supine position, blood flow was measured (three times) via vascular ultrasonography at the femoral vein, 1 cm above of the saphenofemoral junction, in both limbs, without (control) and with IPC in the patients foot, leg and thigh. Compression (130 mmHg on foot and 45 mmHg on leg and thigh) was applied at compression cycles of 11 seconds and emptying cycles of 20-60 seconds. Blood flow evaluations were performed at compression cycle peaks. Values were compared by analysis of variance (Tukey test), p < 0.05 indicating statistically significant difference. RESULTS: Use of IPC on the left and right lower limbs caused a percentage increase in the femoral blood flow of 37.6 and 70.8% (feet), 143.9 and 164.7% (legs), and 132.6 and 128.9% (thighs), respectively. Variations were statistically significant for application in legs and thighs. CONCLUSION: Use of IPC improves blood flow when applied in legs or thighs.
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    Função endotelial de adolescentes normotensos sem fatores de risco para hipertensão arterial
    (Sociedade Brasileira de Pediatria, 2005-10-01) Andrade, Zélia M. de [UNIFESP]; Carvalhaes, João Tomás de Abreu [UNIFESP]; Taddei, Jose Augusto de Aguiar Carrazedo [UNIFESP]; Christofalo, Dejaldo M. J. [UNIFESP]; Ajzen, Sergio Aron [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: To define standards for normal endothelial function in adolescents by high-resolution ultrasound measurement of endothelium-dependent vascular dilatation. METHODS: This was a cross-sectional, descriptive, observational study and part of the thematic project Clinical Study of Growth, Behavior, Arterial Hypertension, Obesity and Oral Health (ECCCHOS) that was developed by the Discipline of Nutrition at the Universidade Federal de São Paulo (UNIFESP). Thirty-one adolescents, eight male and 23 female, with no risk factors for systemic arterial hypertension were selected from 1,420 high school students. The students were daytime pupils at a school in the southeastern district of the city of São Paulo, the capital of São Paulo state, located in the Southeast region of Brazil. All results are presented in the form of means with standard deviations and percentiles. RESULTS: For male students, endothelium-dependant dilation 90 seconds after the cuff was released was 20.9±6,7% [mean ±1 standard deviation] with a 10th percentile of 12.5 and for females these figures were 18.8±12.9% with a 10th percentile of 6.6%. Values for the whole group of subjects were 19.3±11.7% and 6.7%, respectively. CONCLUSION: Endothelium-dependant vascular dilation of 6.7%, after 90 seconds, which corresponds to the 10th percentile, can be considered the lower limit of normality for this age group. Knowledge of this limit is important for the diagnosis of endothelium dysfunction that appears before cardiovascular disease.