IBHRE FINAL REVIEW SCRIPT 2026 TESTED ANSWERS GRADED A+

IBHRE FINAL REVIEW SCRIPT 2026 TESTED
ANSWERS GRADED A+

● Primary Prevention ICD Indications - Class I Level of Evidence A (2
options) Answer: Ischemic Pt --> MI --> more than 40 days post MI and
more than 90 days post vascularization (LVEF < 30% NYHA Class I or
LVEF < 35% and NYHA Class II-III)


OR


Non-ischemic pt LVEF <35% and NYHA class II-III


● Primary Prevention ICD Indications - Class I, Level of Evidence B-R
Answer: Ischemic pt --> MI --> NSVT --> LVEF <40% --> Inducible
sustained VT/VF


● Secondary Prevention ICD Indications - Class I, Level of Evidence B-
R and B-NR Answer: SCA Survivor due to VT/VF or experience
hemodynamically unstable VT (LOE: B-R) or stable VT (LOE: B-NR)


● Secondary Prevention ICD Indications - Class I, Level of Evidence B-
NR Answer: ischemic pt with unexplained syncope who have inducible
sustained monomorphic VT at EPS

, ● What did the MADIT II study demonstrate? Answer: A survival
benefit for prophylactic ICD in patients with prior MI and EF 30%.


● What was the mortality rate in the conventional treatment group in
MADIT II? Answer: 19.8% compared to 14% in the ICD group.


● What is the highest benefit of ICD therapy observed? Answer: In the
first 5 years after implantation.


● Which studies compare ICDs vs. conventional drug therapy Answer:
SCD-HeFT
MADIT I
MADIT II
CASH


● What are the main components of an ICD? Answer: Battery,
capacitors, electronic hybrid (microprocessor, memory, charging circuit),
and connector block header.


Battery and Capacitors often mixed on image identification questions.
Battery behind circuit board, capacitors are large portion at bottom of
device.