QUESTIONS AND ANSWERS SURE A+
✔✔What are the names of the 3 2-D echo plains? - ✔✔Parasternal short-axis plain
(PSax)
Apical two-chamber view (A2C)
Apical four-chamber view (A4C)
✔✔With exercise PA O2 saturations _____ and the (AO-PA) arteriovenous difference
_____. - ✔✔Decreases and Widens
✔✔In a left dominant coronary system, which coronary artery branch usually still arises
from the RCA? - ✔✔Acute Marginal Branch
✔✔Left coronary blood flow occurs primarily during the _____ phase of the cardiac
cycle because _____. - ✔✔Diastolic and diastole releases compressed endocardia's
capillaries.
✔✔The lowest blood oxygen saturation in the heart is found in the _____ which is
usually around _____% O2 saturation. - ✔✔Coronary Sinus and 30-40%
,✔✔The naturally occurring neurotransmitter liberated by the parasympathetic nerve
junction is? - ✔✔Acetylcholine
✔✔What is the primary effect of cavalier nerve stimulation on the heart? -
✔✔Decreases automatically
✔✔What is the effect of pressing on the neck at the junction of the internal and external
carotid arteries. (Carotid sinus massage) - ✔✔-Chronotropic or slowing of the heart rate.
✔✔Mild depression in ventilation (hypo ventilation) results in: - ✔✔+Chronotropic or
speeding up of the heart rate.
✔✔When increased blood pressure is sensed in the arteries, the baroreceptor reflex
causes: - ✔✔Decreases heart rate
✔✔What vessels in the vascular system create the greatest pressure drop? -
✔✔Systemic arterioles
✔✔The second heart sound is caused by closure of what two valves? - ✔✔Aortic and
Pulmonic
✔✔What phase of the cardiac cycle immediately follows closure of the AV valves and
precedes the opening of the semilunar valves in systole? - ✔✔Isometric contraction
✔✔Peripheral venous pressure is the same as _____ pressure. - ✔✔Right atrial
pressure
✔✔Starlings law of the heart states that "the force of cardiac contraction increases
with": - ✔✔Increased diastolic filling
✔✔All these hemo dynamic parameters evaluate ventricular preload. - ✔✔PA wedge
pressure
Central venous pressure (CVP)
Maximum LV filling volume (EDV)
✔✔In a normal person the result of a sustained valsalva maneuver is to _____ the
blood pressure and the _____ the arterial pulse pressure. - ✔✔Decreases both
✔✔Arterioles are the principal point where _____ develops. - ✔✔Vascular resistance
✔✔An older patient has a normal cardiac output, a water hammer pulse, and a blood
pressure of 160/80. This suggests: - ✔✔Atherosclerosis
, ✔✔In the venous pulse, fusion of atrial and ventricular contraction waves is called a/an:
- ✔✔Cannon wave
✔✔The first heart sound is produced by: - ✔✔Closure of atrioventricular valves (mitral
and tricuspid)
✔✔Plotting of the S2 sound during inspiration is due to a delay in: - ✔✔Delay in closure
of the pulmonary valve
✔✔Identify this formula.
(AO-RA)/CO - ✔✔Systemic vascular resistance or afterload
✔✔The intrinsic ability of the heart to contract with a particular intensity is termed; -
✔✔Inotropism
✔✔Which hemo dynamic measurement most directly reflects left ventricular afterload? -
✔✔Mean Blood Pressure
✔✔LV contractility is a measure of the hearts _____ state. - ✔✔Inotropic
✔✔The chief similarity between peripheral veins and lymphatic vessels is that they both:
- ✔✔Drain toward the heart
✔✔The elastic arteries filter and smooth out the pulsatile pressure within the aorta. This
effect is termed what? - ✔✔Windkessel or compliance effect
✔✔Venous capacitance (compliance) is normally _____ times greater than arterial
capacitance. - ✔✔20 times
✔✔The cerebral circulation is a: - ✔✔High flow, low resistance
✔✔Elevated blood angiotensin 2 levels cause: - ✔✔Arteriolar vasoconstriction
✔✔What chemical mediator initiates the inflammation response? - ✔✔Histamine
✔✔A class of medication used to treat hypertension and CHF that breaks the renin a
Shiite sin, aldosterone cycle is: - ✔✔ACE inhibitor
✔✔What is one physiologic parameter that does not normally rise with exercise? -
✔✔Diastolic blood pressure
✔✔The gallop heart sound associated with atrial contraction is the: - ✔✔The 4th heart
sound