Avaliação do aparelho automático oscilométrico de medida de pressão arterial DIXTAL DX-2710 pelos protocolos de validação da British Hypertension Society (BHS) e Association for de Advancement of Medical Instrumentation (AAMI) / Assessment of the DIXTAL DX-2710 automated oscillometric device for blood pressure measurement with the validation protocols of the British Hypertension Society (BHS) and the Association for the Advancement of Medical Instrumentation (AAMI)

OBJECTIVE: To assess the Dixtal DX2710 automated oscillometric device used for blood pressure measurement according to the protocols of the BHS and the AAMI. METHODS: Three blood pressure measurements were taken in 94 patients (53 females 15 to 80 years). The measurements were taken randomly by 2 observers trained to measure blood pressure with a mercury column device connected with an automated device. The device was classified according to the protocols of the BHS and AAMI. RESULT: The mean of blood pressure levels obtained by the observers was 148±38/93±25 mmHg and that obtained with the device was 148±37/89±26 mmHg. Considering the differences between the measurements obtained by the observer and those obtained with the automated device according to the criteria of the BHS, the following classification was adopted: "A" for systolic pressure (69 percent of the differences < 5; 90 percent < 10; and 97 percent < 15 mmHg); and "B" for diastolic pressure (63 percent of the differences < 5; 83 percent < 10; and 93 percent < 15 mmHg). The mean and standard deviation of the differences were 0±6.27 mmHg for systolic pressure and 3.82±6.21 mmHg for diastolic pressure. CONCLUSION: The Dixtal DX2710 device was approved according to the international recommendations

Monitorizaçäo ambulatorial da pressäo arterial em adolescentes normais / Ambulatory blood pressurre monitoring in normal adolescents

OBJETIVO: Avaliar tecnicamente a monitorizaçäo ambulatorial de pressäo arterial (MAPA) em adolescentes normais. MÉTODOS: Quarenta e cinco adolescentes eutróficos, entre 10-18 anos de idade, sendo 27 do sexo feminino. RESULTADOS: Verificaram-se, em média, 90 "por cento" de medidas bem sucedidas: incômo relacionado ao funcionamento do monitor em 30 "por cento" dos casos; valores médios de descenso sistólico, diastólico e de diminuiçäo de freqüência cardíaca, no sono noturno, respectivamente iguais a 13 "por cento", 23 "por cento" e 24 "por cento"; carga pressórica na vigília, no sexo masculino, de 25,4 +- 27,7 "por cento" e 11,8 +- 14,4 "por cento" e, no feminino, de 17,5 +- 18,7 "por cento" e 11,8 +- 11,4 "por cento" para pressäo arterial sistólica (PAS) e diastólica (PAD), respectivamente; carga pressórica no sono, no sexo masculino, de 15,4 +- 22,9 "por cento" para PAS e PAD; medidas diastólica mais elevadas nas dus primeiras horas de monitorizaçäo; diferenças entre sono noturno e vespertino quanto aos parâmetros cardiovasculares estudados. CONCLUSÄO: A MAPA mostrou-se bem tolerada pela populaçäo adolescente. Os registros obtidos apresentaram-se tecnicamente adequados para análise.