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Biomedical subjects

A Sapiński

Publications and source records attributed to A Sapiński.

At least 19 recordsLinked to original sources
PubMed1991

[Measurement of arterial blood pressure using the sphygmomanometer-S and the direct method].

Sphygmomanometer--S is the microcomputer device measuring blood pressure (BP) by the noninvasive sphygmooscillographic method following standard algorithm. When compared sphygmomanometer--S with auscultatory method, this device overestimated systolic BP by 7 mm Hg, and underestimated diastolic BP by 9 mm Hg on the average. In other words, sphygmomanometer--S overestimated systolic pressure and lowers diastolic pressure in relation to auscultatory method in the same ratio and value, as the direct method in relation to the auscultatory method. In this study, we evaluated the accuracy of the results obtained by sphygmomanometer--S, with simultaneously recorded radial artery pressure by direct method. In 15 patients 27-60 years of age undergoing cardiac surgery BP was measured by sphygmomanometer--S and direct method simultaneously on the same left upper extremity. We measured direct radial artery pressure using AE 840 Nycotron transducer and Philips amplifier. BP by sphygmomanometer--S was obtained on the same left arm using cuffs of size 11 x 24 cm and 13 x 35 cm. In 15 patients 124 pairs of BP measurement were carried out with sphygmomanometer--S and direct method. The regression equation for systolic, diastolic and mean pressure demonstrated the coincidence of the BP results obtained by sphygmomanometer--S with direct method. The correlation coefficient (r) was 0.97 for systolic, 0.90 for diastolic and 0.92 for mean pressure. Systolic and diastolic pressure measured by the sphygmomanometer--S were 2 mm Hg and mean 0.6 mm Hg higher on the average, than the same pressures obtained by direct method (ryc. 1). These differences were statistically not significant.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1991

[Comparison of the automatic sphygmo-oscillographic and auscultation methods of blood pressure measurements].

Sphygmomanometer S is the microcomputer device measuring blood pressure for (BP) on the basis of amplitude height and morphology of pulse waves, registered by the pulse converter placed in the air system of a cuff. The letter S stands the sphygmo-oscillographic method used in BP measurement (11). Sphygmomanometer S may be used to determine BP in infants, babies, children and adults (9, 10, 11, 12). The BP measurement results obtained in this way approximate the results of a direct method (1, 3, 8, 14). In order to carry out the simultaneous BP measurement by the sphygmo-oscillographic and the ascultatory methods, sphygmomanometer S was connected trough a manufactured Y-shaped joint with the aneroid-sphygmomanometer manufactured by INCO. This type of connection enabled the measurement to be realized with one cuff and both sphygmomanometers coincidentally. The measurement results of the systolic, diastolic and mean pressures, determined by the sphygmo-oscillographic method, were read from the sphygmomanometer S digital display. At the same time, the Korotkov tones were listened to through the stethscope placed over the brachial artery. The first phase of Korotkov tones was considered to be the systolic pressure while the fourth phase was the diastolic one. The mean pressure is determined by the sphygmomanometer S on the basis of the pulse wave peak amplitudes. In other words, pressure in the cuff, corresponding to the peak pulse waves, is the mean. However, in the ausculatory method, the mean pressure was calculated from the formula; Pm = Pd + 0,4 (Ps-Pd) where 'Pm is the mean pressure, Pd--the diastolic pressure and Ps the systolic pressure.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1989

[Measurement of blood pressure in children aged 0 to 2 years by four indirect methods].

In 75 children aged 0 to 2 years 104 blood pressure measurement have been performed by palpation, auscultation, ultrasound and sphigo-oscillographic method. It has been found that sphigo-oscillographic and ultrasound method are the most reliable and adequate for children below 2 years of age. The sphigo-oscillographic method shows higher and the method of palpation and auscultation lower values of systolic blood pressure than the ultrasound one. Hypertension has been detected in 7% of the investigated children.

Blood Pressure Determination↗