AMSECT Questions(25)/Basic Science Practice Exam 18' Solved 100%

Which of the following can cause an increase in myocardial oxygen consumption in a normal heart? - Answer all of the above: Ca ions Digitalis Epi Which of the following conditions results in dilated and depressed myocardium and an A-V block of electrical impulse? - Answer hyperkalemia What percentage of the total blood volume is contained in the pulmonary circulation? - Answer 0.1% Systemic vascular resistance is approximately _________ times higher than pulmonary vascular resistance - Answer 6 to 7 ________ Law states that the resistance of blood flow in a vessel is directly proportional to the blood viscosity and length of the vessel, but it is inversely proportional to the fourth power of the radius. - Answer Poiseuille's. Which of the following is/are normal response(s) to hypokalemia? - Answer alkalosis flat or inverted T waves Molecules with a molecular mass below 10,000 Daltons have a sieving coefficient of ________ ? - Answer 1 Which of the following molecule(s) would be removed during ultrafiltration - Answer glucose potassium Which of the following can cause orthostatic hypotension? - Answer prazocin Which of the following are considered as cannulation site(s) for liver transplant? - Answer all of the above: femoral vein axillary vein portal vein In which of the following condition(s) may there be a presence of a U wave - Answer all of above: cardiomyopathy decreases serum calcium decrease potassium Which of the following is the half dose Hammersmith for aprotonin that is recommended for pump prime? - Answer 1,000,000 KIU Which of the following is not considered a diuretic - Answer trimethaphan Which of the following potentiates the toxic effects of digitalis - Answer calcium Which of the following beta-antagonist(s) is/are primarily metabolized in the kidney? - Answer atenolol Which of the following beta-antagonist(s) has the shortest half-life? - Answer esmolol Which of the following term(s) refer to cardiac conduction velocity? - Answer dromotropism Which of the following calcium channel blocker is the most potent, causing the greatest amount of coronary and systemic vasodilation? - Answer nifedipine Which of the following is/are treatment(s) of cyanide toxicity due to high dose administration of sodium nitroprusside? - Answer all of above: infusion of sodium nitrite sodium thiosulfate admin. of amyl nitrate What is the half-life of aprotonin? - Answer 2 hrs A rise in RA (right atrium) sats by 8-10% would indicate: - Answer left to right shunt at atrial level The impedance of blood flow through a vascular bed is: - Answer resistance The Fick principle states the rate of diffusion of a gas is proportional to the partial pressure gradient of the gas in the direction of diffusion. T/F - Answer true Central cyanosis is described as a normal O2 saturation measurement in the central aorta with blood becoming sluggish in the distal capillary beds, usually in the extremities. T/F -