FULL TEST BANK For Understanding Pathophysiology - E-Book 6th Edition, Kindle Edition by Sue E. Huether (Author), Latest Update Graded A+

A nurse is discussINg the pressure generated at the end of diastole. Which term is the nurse describINg? Preload Afterload Systemic vascular resistance Total peripheral resistance ANSWERS A Preload, not afterload, is the volume and associated pressure generated IN the ventricle at the end of diastole. Afterload is the resistance to ejection of blood from the left ventricle. Systemic vascular resistance is related to afterload. Total peripheral resistance INcreases afterload. REF: p. 581 27. As stated by the Frank-StarlINg law, there is a direct relationship between the of the blood IN the heart at the end of diastole and the of contraction durINg the next systole. a. pressure; duration b. volume; force c. viscosity; force d. viscosity; duration ANSWERS B The Frank-StarlINg law of the heart describes the length-tension relationship of ventricular end-diastolic volume (VEDV) (preload) to myocardial contractility (as measured by strokevolume). It does not refer to duration, pressure, or viscosity. REF: p. 582 WithIN a normal physiologic range, an INcrease IN left ventricular end-diastolic volume would lead the nurse to monitor for: an INcreased force of contraction. a decrease IN cardiac output. an INcrease IN heart rate. heart failure. ANSWERS A An INcrease IN end-diastolic volume leads to an INcreased force of contraction because fibers are stretched to handle INcreased volume. Cardiac output would INcrease. Although volume INcreases, heart rate does notNrespRondIaccordGBINC. AMn INcrease IN end-diastolic volume USNT would not lead to heart failure sINce failure results IN output decrease. REF: p. 582 A 50-year-old was prescribed a drug that acts as a negative INotrope. Which endogenous substances would be most similar? AcetylcholINe DopamINe EpINephrINe Thyroid hormone ANSWERS A