Sudden Cardiac Death

Question 1

Best available predictor of sudden death risk

Answer 1

Severe LV dysfx w/ reduced EF

Question 2

Inhospital cardiac arrest px w HF are more likely to have what cardiac rhythms as initial documented cardiac arrest?

Answer 2

V fib

Question 3

CHF px w NHYA class IV (sx at rest) are more likely to die of pump failure than sudden cardiac death. TRUE or FALSE?

Answer 3

TRUE. NYHA II & III px are at higher risk of cardiac death than pump failure

Question 4

Unexplained LVH w nondilated ventricular chambers

Answer 4

Hypertrophic cardiomyopathy

Question 5

Most common cardiovascular cause of sudden cardiac death in young athletes

Answer 5

Hypertrophic cardiomyopathy

Question 6

Recommended tx for individuals w prior documented cardiac arrest, 1st deg relative who has sudden cardiac death, unexplained episodes of syncope

Answer 6

Implantable cardioverter-defibrillator

Question 7

Implantable cardioverter-defibrillator is also recommended for px with max LV wall thickness >/= ___mm

Answer 7

30

Question 8

Hereditary form of cardiac muscle disease characterized by R-sided HF, vent arrhythmias of RV origin, syncope and sudden cardiac death.

Answer 8

Arrthythmogenic RV cardiomyopathy

Question 9

ECG findings of arrthythmogenic RV cardiomyopathy

Answer 9

T-wave inversion in the right precordial leads V1-3

Question 10

Most freq coronary artery anomaly assoc w sudden cardiac death

Answer 10

Anomalous origin of the L coronary artery (from pulmonary artery syndrome)

Question 11

Greatest risk of sudden cardiac death w congenital heart dse exists in those w ___ lesions

Answer 11

L heart obstructive

Question 12

VHD that causes effort-induced dyspnea, myocardial ischemia and ventricular arrhythmias

Answer 12

Hemodynamically severe aortic stenosis

Question 13

Murmur in severe aortic stenosis

Answer 13

Harsh, late-peaking systolic murmur at the upper R sternal border w radiation to the neck

Question 14

Diffuse degenerative disease of heart’s electrical generation and conduction system

Answer 14

Sick sinus syndrome

Question 15

Idiopathic slerodegenration of AV node and bundle branches

Answer 15

Lenegre’s disease

Question 16

Invasion of conduction system by fibrosis or calcification

Answer 16

Lev’s disease

Question 17

Hereditary channelopathy characterized by sudden cardiac death occuring out of hospital in young men during sleep or at rest w/o premonitory sx or anatomic abnormality

Answer 17

Sudden arrhythmic death syndrome

Question 18

Disease caused by mutations in genes that encode the proteins responsible for interacting w Na, K, Ca ion channels within the heart

Answer 18

Ion channel disease

Question 19

Syndrome w ECG finding of a prominent J-wave w characteristic downsloping ST elevation in V1-3; common in SE asia termed as “bangungut” in Phils

Answer 19

Brugada syndrome

Question 20

Syndrome characterized by prominent, notch-like J wave on the QRS downslope ff by upsloping ST elevation; commonly w reciprocal ST depression in aVR

Answer 20

Early repolarization syndrome

Question 21

Syndrome w prolongation of QTc, syncope and sudden cardiac arrest caused by torsades de pointes and Vfib

Answer 21

Long QT syndrome

Question 22

Normal QT interval limits (in seconds)

Answer 22

0.35 to 0.44 sec

Question 23

Short QT syndrome can be secondary to SIRS, myocardial ischemia, increased vagal tone, acidosis and what electrolyte abnormalities?

Answer 23

Hypercalcemia

Hyperkalemia

Question 24

Genetic disorder involving defective myocardial cellular calcium handling; characterized by stress-related/ exercise-induced ventricular tachy

Answer 24

Cathecholaminergic polymorphic ventricular tachycardia