Mean Blood Pressure
Abstract
The objective of this study was to observe and record the effects that exercise has on cardiovascular functions such as mean blood pressure, cardiac output, and total peripheral resistance by comparing each numerical function’s numerical data before and after exercise. Before exercise, the mean blood pressure (MPB) was 84.03 mmHg with a standard deviation of 10.3. After exercise, MBP was 92.19 with a standard deviation of 10.5. The cardiac output (CO) before exercise was 5.45 Liters/minute with a standard deviation of 0.98. After exercise, CO was 11.05 Liters/minute with a standard deviation of 2.54. Lastly, total peripheral resistance (TPR) before exercise was 15.87 with a standard deviation of 2.6 and after exercise the TPR was …show more content…
Each subject’s pulse was taken by counting the number of beats felt in fifteen second intervals. When that number had been acquired, it was multiplied by four to obtain the number of beats per minute, known as the heart rate. The next step was to take blood pressure of each subject in the group. This was done by wrapping the sphygmomanometer (blood pressure cuff) around the subject’s arm, just above the elbow, then placing the stethoscope against the anterior part of the elbow; the cuff was inflated to 200 mmHg. Pressure was slowly released from the cuff until the first heart sound, from systolic pressure, was heard, and then the second heart sound, from diastolic pressure, was heard. With this information groups were able to calculate mean arterial blood pressure (MBP) using the following formula: MBP = ⅔ (diastolic pressure) + ⅓ (systolic pressure). Next, cardiac output (CO) needed to be calculated. The formula for CO is: CO = stroke volume (SV) x heart rate (HR). In this lab stroke rate could not be found so all groups used a standard set for the purpose of this experiment, they are as follows: if subject weighed less than 150 lbs. stroke volume was 0.070 Liters/beat at rest and 0.100 Liters/beat after exercise; if the subject weighed more than 150 lbs. stroke volume was 0.085 Liters/beat at rest and 0.110 Liters/beat after exercise. Lastly, total peripheral resistance (TPR) needed to be calculated. The formula for determining TPR is as follows: TPR = MBP/CO. Both mean blood pressure and cardiac output had already been calculated. All of the previous steps were calculated before exercise and again immediately after light exercise by each of the subjects and their
The objective of this study was to observe and record the effects that exercise has on cardiovascular functions such as mean blood pressure, cardiac output, and total peripheral resistance by comparing each numerical function’s numerical data before and after exercise. Before exercise, the mean blood pressure (MPB) was 84.03 mmHg with a standard deviation of 10.3. After exercise, MBP was 92.19 with a standard deviation of 10.5. The cardiac output (CO) before exercise was 5.45 Liters/minute with a standard deviation of 0.98. After exercise, CO was 11.05 Liters/minute with a standard deviation of 2.54. Lastly, total peripheral resistance (TPR) before exercise was 15.87 with a standard deviation of 2.6 and after exercise the TPR was …show more content…
Each subject’s pulse was taken by counting the number of beats felt in fifteen second intervals. When that number had been acquired, it was multiplied by four to obtain the number of beats per minute, known as the heart rate. The next step was to take blood pressure of each subject in the group. This was done by wrapping the sphygmomanometer (blood pressure cuff) around the subject’s arm, just above the elbow, then placing the stethoscope against the anterior part of the elbow; the cuff was inflated to 200 mmHg. Pressure was slowly released from the cuff until the first heart sound, from systolic pressure, was heard, and then the second heart sound, from diastolic pressure, was heard. With this information groups were able to calculate mean arterial blood pressure (MBP) using the following formula: MBP = ⅔ (diastolic pressure) + ⅓ (systolic pressure). Next, cardiac output (CO) needed to be calculated. The formula for CO is: CO = stroke volume (SV) x heart rate (HR). In this lab stroke rate could not be found so all groups used a standard set for the purpose of this experiment, they are as follows: if subject weighed less than 150 lbs. stroke volume was 0.070 Liters/beat at rest and 0.100 Liters/beat after exercise; if the subject weighed more than 150 lbs. stroke volume was 0.085 Liters/beat at rest and 0.110 Liters/beat after exercise. Lastly, total peripheral resistance (TPR) needed to be calculated. The formula for determining TPR is as follows: TPR = MBP/CO. Both mean blood pressure and cardiac output had already been calculated. All of the previous steps were calculated before exercise and again immediately after light exercise by each of the subjects and their