Page 1 of 10
AACN CMC EXAM GUIDE WITH QUESTIONS
AND ACCURATE ANSWERS VERIFIED BY AN
EXPERT|| LATEST AND COMPLETE UPDATE
2025-2026 EXPERT VERIFIED SOLUTIONS
GRADED A+
What percentage of ventricular filling is passive and what percentage is atrial
kick? - ANSWER- Passive - 75%
Atrial kick -- 25-35%
What 3 components make up stroke volume? - ANSWER- Preload
Afterload
Contractility
What is Wellen's syndrome? - ANSWER- Deep T-wave inversion in leads V2-
V3 and indicative of critical proximal LAD dx and high risk of Sudden cardiac
death
What does Aortic Regurgitation cause? - ANSWER- Increased pulse pressure
(>40mmHg)
Water Hammer pulse (fast upstroke and downstroke)
What EKG changes are seen with Right & Left Hypertrophy - ANSWER- Right
-- T wave inversion in V1 and V2
Left -- T wave inversion in V5 and V6
, Page 2 of 10
What is malar blush? - ANSWER- plum-red discoloration of the cheeks that is
indicative of mitral stenosis d/t CO2 retention and its vasodilatory effects
What causes a Type I block? - ANSWER- Block at the AV node
AV node is suppled by the RCA
What causes Second degree Type II blocks? - ANSWER- Block at the bundle of
his
Bundle of his supplied by the LAD
What arteries supply the sinus node? - ANSWER- RCA (55% of people)
LAD (45% of people)
What causes a Second degree Type I Block? - ANSWER- Block at the AV node
Supplied by the RCA
Which lead is best to differentiate between LBBB/RBBB and VT/SVT? -
ANSWER- V1
AACN CMC EXAM GUIDE WITH QUESTIONS
AND ACCURATE ANSWERS VERIFIED BY AN
EXPERT|| LATEST AND COMPLETE UPDATE
2025-2026 EXPERT VERIFIED SOLUTIONS
GRADED A+
What percentage of ventricular filling is passive and what percentage is atrial
kick? - ANSWER- Passive - 75%
Atrial kick -- 25-35%
What 3 components make up stroke volume? - ANSWER- Preload
Afterload
Contractility
What is Wellen's syndrome? - ANSWER- Deep T-wave inversion in leads V2-
V3 and indicative of critical proximal LAD dx and high risk of Sudden cardiac
death
What does Aortic Regurgitation cause? - ANSWER- Increased pulse pressure
(>40mmHg)
Water Hammer pulse (fast upstroke and downstroke)
What EKG changes are seen with Right & Left Hypertrophy - ANSWER- Right
-- T wave inversion in V1 and V2
Left -- T wave inversion in V5 and V6
, Page 2 of 10
What is malar blush? - ANSWER- plum-red discoloration of the cheeks that is
indicative of mitral stenosis d/t CO2 retention and its vasodilatory effects
What causes a Type I block? - ANSWER- Block at the AV node
AV node is suppled by the RCA
What causes Second degree Type II blocks? - ANSWER- Block at the bundle of
his
Bundle of his supplied by the LAD
What arteries supply the sinus node? - ANSWER- RCA (55% of people)
LAD (45% of people)
What causes a Second degree Type I Block? - ANSWER- Block at the AV node
Supplied by the RCA
Which lead is best to differentiate between LBBB/RBBB and VT/SVT? -
ANSWER- V1
