1 for specific request mail
IBHRE CCDC - Tachy Concepts Questions and Correct
Answers | Latest Update
What was the relative risk reduction of mortality in the MADIT I study?
Ans: 54% reduction in mortality with ICD compared to drug therapy.
Primary Prevention ICD Indications - Class I Level of Evidence A (2
options)
Ans: 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
Assignment Expert
NYHA Class II-III)
Guru01 - Stuvia
OR
Non-ischemic pt LVEF <35% and NYHA class II-III
Primary Prevention ICD Indications - Class I, Level of Evidence B-R
2026
Ans: Ischemic pt --> MI --> NSVT --> LVEF <40% --> Inducible sustained
VT/VF
©
Secondary Prevention ICD Indications - Class I, Level of Evidence B-R and
B-NR
Ans: 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
Ans: ischemic pt with unexplained syncope who have inducible
sustained monomorphic VT at EPS
What did the MADIT II study demonstrate?
Ans: A survival benefit for prophylactic ICD in patients with prior MI
and EF 30%.
, 2 for specific request mail
What was the mortality rate in the conventional treatment group in
MADIT II?
Ans: 19.8% compared to 14% in the ICD group.
What is the highest benefit of ICD therapy observed?
Ans: In the first 5 years after implantation.
Which studies compare ICDs vs. conventional drug therapy
Ans: SCD-HeFT
Assignment Expert
MADIT I
MADIT II
Guru01 - Stuvia
CASH
What are the main components of an ICD?
2026
Ans: 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.
What is the design criterion for an ICD battery?
Ans: It must be able to deliver 40J within 10 seconds.
Also handle a constant pacing drain
What are the types of ICD batteries mentioned?
Ans: Li/SVO (minimal use today, popular in earlier ICDs)
Lithium/Manganese Dioxide (2 manufacturers use today)
Lithium/Silver-Vanadium Oxide-Carbon Monofluoride (MDT)
IBHRE CCDC - Tachy Concepts Questions and Correct
Answers | Latest Update
What was the relative risk reduction of mortality in the MADIT I study?
Ans: 54% reduction in mortality with ICD compared to drug therapy.
Primary Prevention ICD Indications - Class I Level of Evidence A (2
options)
Ans: 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
Assignment Expert
NYHA Class II-III)
Guru01 - Stuvia
OR
Non-ischemic pt LVEF <35% and NYHA class II-III
Primary Prevention ICD Indications - Class I, Level of Evidence B-R
2026
Ans: Ischemic pt --> MI --> NSVT --> LVEF <40% --> Inducible sustained
VT/VF
©
Secondary Prevention ICD Indications - Class I, Level of Evidence B-R and
B-NR
Ans: 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
Ans: ischemic pt with unexplained syncope who have inducible
sustained monomorphic VT at EPS
What did the MADIT II study demonstrate?
Ans: A survival benefit for prophylactic ICD in patients with prior MI
and EF 30%.
, 2 for specific request mail
What was the mortality rate in the conventional treatment group in
MADIT II?
Ans: 19.8% compared to 14% in the ICD group.
What is the highest benefit of ICD therapy observed?
Ans: In the first 5 years after implantation.
Which studies compare ICDs vs. conventional drug therapy
Ans: SCD-HeFT
Assignment Expert
MADIT I
MADIT II
Guru01 - Stuvia
CASH
What are the main components of an ICD?
2026
Ans: 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.
What is the design criterion for an ICD battery?
Ans: It must be able to deliver 40J within 10 seconds.
Also handle a constant pacing drain
What are the types of ICD batteries mentioned?
Ans: Li/SVO (minimal use today, popular in earlier ICDs)
Lithium/Manganese Dioxide (2 manufacturers use today)
Lithium/Silver-Vanadium Oxide-Carbon Monofluoride (MDT)
