Blood Pressure Experiment

Introduction: Blood pressure is the measure of the force on arteries applying by blood as pumping out of the heart. Blood pressure measurement includes systolic and diastolic blood pressure. Systolic blood pressure (SBP) is the force that the heart needs to create to get the blood start to flow in our circulatory system; and diastolic blood pressure (DBP) is the pressure on arteries when the heart relaxes before pumping the blood out of the heart. Another factor that helps us to have a better understanding of blood pressure is mean arterial pressure (MAP) which is the average pressure in a person’s arteries during a single cardiac cycle. Resting blood pressure in a normal and healthy person is defined as 120/80 mm Hg with a resting heart rate

We had our subject to lay on the bed and relax for 5 minutes while they were wearing a HR monitor band around their ribcage and a signal receiver watch. We measured the blood pressure by using the stethoscope and blood pressure cuff and recorded our values. Once the supine measurements got completed, sat the subject upright on the bed with their legs hanging. After ~20 sec into this position, we took our subject’s blood pressure measurement and recorded our data. Then we stood the subject upright. And help them up to the standing position. After ~20 sec into this position, we took our subject’s blood pressure measurement and recorded our data. It was important that the other members of the group assist the subject to avoid as much active movement of the subject as possible. We supported the subject in all positions to have them remain as relaxed as possible. For the cold pressor test, we had the same subject to lay on bed and relax for 5 minutes, measured the blood pressure at resting condition, then placed the subject’s hand (opposite the blood pressure cuff) in the ice water to a depth well over their wrist and collected data at exactly the 1 and 2 minute

It was determined that changing the body position from supine to sitting to standing increased SBP, DBP, MAP, and HR. The data recorded does not support the hypothesis because we got the opposite results in our experiment. Although at the end of lab section, we found out that our hypothesis was right and there was something wrong with our data collection part of the