Use the cardiovascular measurements in the table below to
calculate the following:
Parameter Value
Systolic pressure (aorta) 124 mm Hg
Diastolic pressure (aorta) 82 mm Hg
R-R interval 800 ms
Left ventricular end-diastolic volume 140 mL
Left ventricular end-systolic volume 70 mL
Mean pulmonary artery pressure 15 mm Hg
Right atrial pressure 2 mm Hg
Left atrial pressure 5 mm Hg
(a) Mean arterial pressure (units of mm Hg).
(b) Stroke volume (mL), cardiac output (mL/min), & ejection
fraction of left ventricle.
(c) Total peripheral resistance (TPR, units of mmHg*min/mL).
(d) Pulmonary vascular resistance (mmHg*min/mL). Compare the
calculated values for
pulmonary vascular resistance and TPR. How can the volumetric blood
flow rate through the
pulmonary system be equal to that of the systemic circulation?
Explain.
(e) Volumetric flow rate (mL/min) through all of the pulmonary
capillaries. Explain.
(f) Volumetric flow rate (mL/min) through all of the systemic
arteries. Explain.
(g) If the diameter of the aorta is 20mm, what is the velocity
(units of cm/min) of aortic blood
flow? Would you expect the velocity of blood flow in systemic
capillaries to be higher, lower,
or the same as the velocity of blood flow in the aorta?
Explain.
Use the cardiovascular measurements in the table below to calculate the following: Parameter Value Systolic pressure (ao
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