Abstract

POSTURAL CHANGES IN BLOOD PRESSURE IN NORMOTENSIVE PERSONS

Mrunalini Kanvinde*, Dr. Vivek Nalgirkar, Rhea Sarkari, Milli Arora and Rebecca Wig

Abstract

Purpose – The primary purpose of this study is to observe the postural variation of blood pressure and to compare to find out error difference. Blood pressure is a measure of cardiovascular reactivity reflecting autonomic function. Short Term regulatory mechanism (Baroreceptor reflex) is operated to maintain normal blood pressure. Pooling of blood in lower extremities occur due to gravitational effects. It reduces venous return and stroke volume with a fall in systolic blood pressure. Material and Method –By keeping Inclusion and exclusion criteria, subjects selected for this study were 50 in number with age group 15 to >55 years of both sex and they were categorized into four groups based on their age. By taking position of the patient into consideration, blood pressure was recorded in lying and standing posture. Error difference in blood pressure was found in standing position by double recording. Questionnaires evaluated about smoking habits, medication use and history of past illness. Statistical analysis was done by t-test. Result –From above study, it was found that blood pressure varies in lying position than in standing position (p<0.01) with less error in blood pressure recording (p<0.05). It was also found that both systolic blood pressure and diastolic blood pressure increases in standing position(P<0.01) Conclusion – Finally, it was concluded that in normotensive person, blood pressure varies according to posture of the person due to changes in hemodynamic, which is under the control of central command through baroreceptors, blood pressure controlling body.

Keywords: Systolic blood pressure, diastolic blood pressure, normotensive persons, baroreceptors.