Blood Pressure and Pulse Determination
Bio 202 Human Anatomy & Physiology 2
Lab Report Activity 33A
Dr. Alpa Gautam
March 6, 2012
The purpose of the paper is to inform and conduct a laboratory report on human blood pressure and pulse determination. Systolic (contraction) and diastolic (relaxation) pressures refer to the ventricular contraction and relaxation. With knowing the two pressures, one can distinguish if he/she is at a normal or abnormal state. It is also important to know the cardiac cycle which is one full heartbeat. The cardiac cycle usually happens when the atria and ventricles contract and relax. While conducting the report, we asked the individual to do numerous of things to see how it affected the pulse and blood pressure. Some of the activities included: posture, exercise, and a noxious sensory stimulus (cold). After each specified activity, the individual had their blood pressure and pulse taken. The lab report will also include a brief report on pulse determination/pressure. It will include definition and the equipment used to determine pulse rate. Introduction
Human blood pressure is vital to one life because it can help distinguish abnormalities. Blood pressure consists of two pressures, the diastolic and systolic pressure. The diastolic pressure refers to the resting or the point where ventricles can relax. Systolic pressure refers to the contraction period. Diastolic pressure is normally the lower numeric number and systolic relatively is the higher numeric number. When an individual has their blood pressure with a sphygmomanometer, both numbers will appear on a medical report, an example would be 120/75 mmHg (mmHg is the millimeters of mercury). When using the sphygmomanometer, the examiner will determine the blood pressure by the sounds of Korotkoff. These sounds will then indicate the resumption of blood flow into the forearm (Mitchell, 2009). Usually, blood pressure is steady throughout the day. But to be precise, it is lowest when asleep and increases when awake. It also can rise when you are anxious, excited, nervous, or active. With pulse pressure, it is the difference between diastolic and systolic pressures. It also represents the force that your heart generates each time it contracts. In a person with a systolic blood pressure of 120 mmHg and a diastolic pressure of 80 mmHg, so the difference or the pulse pressure would be 40 mmHg. Pulse pressure is not as important as systolic and diastolic pressure because it is not a reliable source (Mitchell, 2009). I believe that blood pressure does have an impact but over a long period of time, my lab report has intervals of 3-5 minutes. Materials and methods
The materials we used were a sphygmomanometer, stethoscope, lab manual, alcohol swabs and four participants. In activity five of the lab manual, we used the sphygmomanometer to measure. We had participant sit down where she may be comfortable and then inflated the cuff to 160 mmHg pressure; releasing the pressure valve slowly. In activity seven, we observed the effect of various factors on blood pressure and heart rate. POSTURE
BP (TRIAL 1)
PULSE (TRIAL 1)
BP (TRIAL 2)
RECLING AFT 2 MIN
FOR 3 MIN
****chart above is for the posture activity (Mitchell, 2009) Part of activity seven was to take the participants blood pressure and pulse while they were sitting comfortably, reclining after 2/3 minutes, immediately on standing from the reclining position, and after standing for three minutes. We found that that the participant did not have a drastic change in values. I think this is because the blood pressure is not always steady at one number and does alter from one position to the other. Our participant has a normal blood pressure because their...
References: Marieb, Elaine N. Essentials of Human Anatomy and Physiology. [S.l.]: Pearson Education. Print.
Susan J. Mitchell, and Marieb, Elaine Nicpon. Human Anatomy & Physiology Lab Manual:
AHS2091 Human Anatomy : AHS 2111 Human Physiology Life Science. Menlo Park, CA:
Addison Wesley Longman, 2009. Print.
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