Cardiovasc Physio Assignment_JaylaBrown

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Medicine

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Apr 3, 2024

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Name: Spring 2024 N#: Cardiovascular Physiology Lab Assignment Note: For your quiz/exam, you are responsible for all information covered in Connect lab activities for this module and in the resources posted on the module overview page (including the Cardiac Cycle), not just the questions you are answering for this assignment. Heart Sounds 1. A. What causes the first heart sound (“lubb”)? The AV valves close at the start of ventricular systole. B. Regarding the cardiac cycle, when would the first heart sound be heard? At the beginning of Isovolumetric contraction 2. A. What causes the second heart sound (“dupp”)? Semilunar valves closing at the end of the ventricular systole. B. Regarding the cardiac cycle, when would the second heart sound be heard? At the beginning of isovolumetric relaxation 3. Indicate which individual valve closure you would hear if you placed the stethoscope at these locations on the thorax. A. Aortic Valve B. Tricuspid Valve C. Pulmonary Valve D. Mitral Valve

Pulse Points 4. Briefly describe the procedure used to take the pulse. -Place your pointer and middle fingers on the artery, pushing down and then decreasing pressure to allow palpitations to begin. 5. A. When you palpated the pulse, which pulse point (artery) had the greatest amplitude? - Common Carotid artery B. Explain why the amplitude is greatest in that artery. - The heart is near the common carotid artery. 6. A. When you palpated the pulse, which pulse point (artery) had the least amplitude? -Dorsal Pedis artery B. Explain why the amplitude is least in that artery. - The dorsal pedal artery is the furthest from the heart 7. Pulse points are also known as pressure points because they can be compressed to stop blood flow into distal tissues during hemorrhage. What pressure point (artery) would you compress to help stop bleeding from the following areas? A. the calf: Popliteal Artery B. the forearm: Brachial Artery C. the thumb: Radial Artery Blood Pressure 8. Answer the following questions about the procedure used to measure blood pressure… A. What instrument is placed around the arm and used to measure blood pressure? *use the fancy medical term for it (Sphygmomanometer) B. What other instrument is required to measure blood pressure? - Stethoscope C. In which artery is blood pressure usually taken? -Brachial Artery D. *The first tapping sounds heard as cuff pressure is gradually released are called the Sounds of Korotkoff. *These tapping sounds are indicative of and recorded as the systolic blood

pressure. *What causes these tapping sounds? *be specific -Resumption of blood flow E. *As cuff pressure continues to be released, the tapping sounds become louder and then disappear. This disappearance of the sound is indicative of and recorded as Diastolic blood pressure. *What causes the disappearance of the sounds? *be specific - Once the restriction is lifted, the blood can circulate unrestrictedly. 9. Describe the procedure used to measure blood pressure in detail . The Patient should sit with one arm on a table. Wrap the Sphygmomanometer around the arm above the elbow. Ensure comfort and position the cuff with the arrow pointing upwards and above the brachial artery. Inflate the cuff to 160 mm Hg pressure, then slowly release. Place the stethoscope on the pulse point and listen for the pulse while releasing pressure. Record the pressure when sound disappears (diastolic) and when it reappears (systolic). Reading Blood Pressure… For the next question, click on the blue Patient link provided below and determine the patient’s blood pressure. Make sure to include appropriate units with your answers. 10. Patient (40 yr old man with headaches & shortness of breath) A: What is this patient’s blood pressure reading? 160 mmHG/90 mmHg B: Is this blood pressure reading high, low, OR normal for a resting adult? High Calculating Pulse Pressure and Mean Arterial Pressure… 11. A patient has a blood pressure reading of 130/70 mmHg. Using this information, calculate their pulse pressure and MAP. SHOW YOUR WORK. Include units with your answers. A: What is the patient’s pulse pressure? 60 mmHg (130 mmHg -70mmHg =60mmHg) B: What is the patient’s mean arterial pressure? Map = (2*70mmhg) + 130 mmHg/3 140 mmHg + 130mmHg/3 = 270 mmHg/3 MAP= 90 mmHg 90 mmHg

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