CCDS Exam Questions with Complete
Solutions21
A very high PVC count could be attributed most likely to _______? - ANSWERS-Atrial
undersensing
Most common cause of inappropriate mode switching? - ANSWERS-FFRWOS
DOE with moderate activity is what class heart failure symptoms? - ANSWERS-Class II
During EP study a ventricular arrhythmia inducible with PES is what type of tachycardia? -
ANSWERS-Reentry
What has the ability to increase cardiac output the most? - ANSWERS-Heart rate
All the following drugs could be used to treat CHF except - ANSWERS-Diuretics, ACE inhibitors,
Beta blockers (not CCB)
Single chamber ICD during implant has high DFTs (RV coil only ICD lead) what actions might be
taken? - ANSWERS-Reposition the lead, reverse the polarity
Wenckebach interval - ANSWERS-MTR interval - TARP. MTR interval-(PVARP+shortest AVD)
Desirable slew rate in ventricle - ANSWERS->.5 V/sec
,PMT algorithm is not terminating PMT, what could be the cause? - ANSWERS-PMT is slower
than the MTR
If you have multiple PMT episodes what risks come with extending PVARP? - ANSWERS-Early 2:1
block
Common cause of safety pacing - ANSWERS-PVC falling into the crosstalk detection window
After receiving inappropriate shocks a pt presents to the ED and a magnet is applied, what
response will ICD have on the pacing? - ANSWERS-No effect
Which of the following would be appropriate actions to take in the presence of safety pacing -
ANSWERS-Decrease atrial output, increase ventricular blanking period
ATP is most effective for what type of arrhythmia - ANSWERS-Reentry
What percentage of CRT patients are considered non-responders - ANSWERS-30%
A dual coil integrated bipolar trans venous lead senses and paces between - ANSWERS-distal coil
and tip electrode
acute complications of device implant - ANSWERS-pneumothorax, hemothorax, lead perforation
(not infection)
Which drug is known to decrease DFTs - ANSWERS-Sotalol
Pacing RVA causes what change in QRS? - ANSWERS-RsR in V6
, Ventricular based device --> when you AP VS, you will be - ANSWERS-pacing the atrium faster
than the base rate
most common cause of systolic heart failure - ANSWERS-ischemic heart disease
LBBB - ANSWERS-QS pattern in V1, QRS > 120 ms
Causes of PMT - ANSWERS-Loss of atrial capture, PVCs, atrial underspending
ECG characteristic of WPW - ANSWERS-delta waves
Drugs used for rate control for patients in AF w/RVR - ANSWERS-CCB, BB
What did the pain free and pain free II trials show? - ANSWERS-ATP is effective for fast VT
What is the average time an ICD takes to charge to max output - ANSWERS-10 seconds
Which of the following is a poor prognostic sign for a patient with HCM? - ANSWERS-
Hypotension with exercise (not tachycardia, DOE)
Methods to induce VF in the lab - ANSWERS-Shock on T, DC fibber, 50 HZ burst
Brugada syndrome - ANSWERS--Autosomal dominant disorder most common in Asian males.
-ECG pattern of pseudo-right bundle branch block and ST elevations in V1-V3.
-⬆️ risk of ventricular tachyarrhythmias and SCD. Prevent SCD with implantable cardioverter-
defibrillator (ICD).
Solutions21
A very high PVC count could be attributed most likely to _______? - ANSWERS-Atrial
undersensing
Most common cause of inappropriate mode switching? - ANSWERS-FFRWOS
DOE with moderate activity is what class heart failure symptoms? - ANSWERS-Class II
During EP study a ventricular arrhythmia inducible with PES is what type of tachycardia? -
ANSWERS-Reentry
What has the ability to increase cardiac output the most? - ANSWERS-Heart rate
All the following drugs could be used to treat CHF except - ANSWERS-Diuretics, ACE inhibitors,
Beta blockers (not CCB)
Single chamber ICD during implant has high DFTs (RV coil only ICD lead) what actions might be
taken? - ANSWERS-Reposition the lead, reverse the polarity
Wenckebach interval - ANSWERS-MTR interval - TARP. MTR interval-(PVARP+shortest AVD)
Desirable slew rate in ventricle - ANSWERS->.5 V/sec
,PMT algorithm is not terminating PMT, what could be the cause? - ANSWERS-PMT is slower
than the MTR
If you have multiple PMT episodes what risks come with extending PVARP? - ANSWERS-Early 2:1
block
Common cause of safety pacing - ANSWERS-PVC falling into the crosstalk detection window
After receiving inappropriate shocks a pt presents to the ED and a magnet is applied, what
response will ICD have on the pacing? - ANSWERS-No effect
Which of the following would be appropriate actions to take in the presence of safety pacing -
ANSWERS-Decrease atrial output, increase ventricular blanking period
ATP is most effective for what type of arrhythmia - ANSWERS-Reentry
What percentage of CRT patients are considered non-responders - ANSWERS-30%
A dual coil integrated bipolar trans venous lead senses and paces between - ANSWERS-distal coil
and tip electrode
acute complications of device implant - ANSWERS-pneumothorax, hemothorax, lead perforation
(not infection)
Which drug is known to decrease DFTs - ANSWERS-Sotalol
Pacing RVA causes what change in QRS? - ANSWERS-RsR in V6
, Ventricular based device --> when you AP VS, you will be - ANSWERS-pacing the atrium faster
than the base rate
most common cause of systolic heart failure - ANSWERS-ischemic heart disease
LBBB - ANSWERS-QS pattern in V1, QRS > 120 ms
Causes of PMT - ANSWERS-Loss of atrial capture, PVCs, atrial underspending
ECG characteristic of WPW - ANSWERS-delta waves
Drugs used for rate control for patients in AF w/RVR - ANSWERS-CCB, BB
What did the pain free and pain free II trials show? - ANSWERS-ATP is effective for fast VT
What is the average time an ICD takes to charge to max output - ANSWERS-10 seconds
Which of the following is a poor prognostic sign for a patient with HCM? - ANSWERS-
Hypotension with exercise (not tachycardia, DOE)
Methods to induce VF in the lab - ANSWERS-Shock on T, DC fibber, 50 HZ burst
Brugada syndrome - ANSWERS--Autosomal dominant disorder most common in Asian males.
-ECG pattern of pseudo-right bundle branch block and ST elevations in V1-V3.
-⬆️ risk of ventricular tachyarrhythmias and SCD. Prevent SCD with implantable cardioverter-
defibrillator (ICD).
