Systemic Blood Pressure Measurements

Systemic Arterial Blood Pressure

Amir                                                                    01

Aims

The aims of the practical were to introduce the correct technique of the measurement of both systolic and diastolic blood pressures by sphygmomanometry of a resting human subject. Another aim was to use the terms mean the conventional and digital readings, and any significant differences in the male and female subjects. Physiological differences between male and female subjects would then be identified.

Materials

Aneroid sphygmomanometer, Stethoscope & Digital sphygmomanometers.

Methods

The experiment was carried out as per methods/instructions stated in the sections ‘The Systemic Pressure’ section (page 2-3) and Appendix 2 of the B11M03 lab manual

Results

T-test (Paired)

Null Hypothesis: There is no significant difference in the values of the conventional and digital systolic blood pressure readings in female subjects.

Mean Difference= -0.75                      SD of diff. = √ (4359.75/51) = 9.245826

Standard Error of the Mean: 9.245826/√ 52 = 1.282165

T-Value obtained = -0.75/1.282165 = -0.58495

Per the t-test table, P>0.05 for 51 degrees of freedom. The null hypothesis IS NOT rejected. The results of this section were not significant.

T-test (Unpaired)

Null Hypothesis: There is no significant difference in the values of male and female systolic blood pressure, using the digital sphygmomanometer.

T-value = X1-X2/ √[(SEM1)2+(SEM2)2]

           = 124.6667-112.9038/ √ [(3.258975)2+(1.163568)2]

           =11.7629/ √ (10.62092+1.353891)

...