The cardiac output of 70-year-old man at rest is 5.5L / min; mean HR is 85 bpm. Left ventricular end-diastolic volume (LVEDV) is estimated to average 85 ml. What is the mean ejection fraction?

The following measurements were made on two individuals (the values recorded remained stable for one hour): Person A: heart rate, 75 bpm; stroke volume, 60 mL Person B: heart rate, 90 bpm; stroke volume, 95 mL Which person has the greater venous return? Which person has the longer ventricular filling time?

If a subject has stroke volume of 100 and heart rate of 53 bpm, What is his cardiac output in ml/min?

4) A) Calculate the Systolic Pressure of a 65 years old man if the diastolic blood pressure is 90 mmHg and stroke volume of 70 ml/beat. Total Peripheral Resistance is 19mmHg.min/L. Assume person is healthy and has a normal heart rate. B) Calculate Left ventricular end-diastolic volume (LVEDV) when the mean ejection fraction is 80 % ?

A patient's blood pressure is 130/80 mmHg. What is the value of this patient's pulse pressure ? Group of answer choices 50 mmHg 130 mmHg 80 mmHg

What would be the fastest possible HR if the absolute refractory period for the cardiac myocyteswas 250 ms?

What is the Q-T interval of the resting  EKG trace?

Calculate the increase in pressure needed for maintaining the healthy blood flow through the human artery if the radius decreased from 2.0 x 10-4 to 1.8 x 10-4 cm.

There are three major factors that affect stroke volume and therefore affect cardiac output: afterload, preload, and contractility. Explain how and why each of these factors affects cardiac output. Each answer must explain what the factor is as well as how it affects cardiac output.

Relate the EKG waveforms to the normal mechanical events of the cardiac cycle.