Abstract
BACKGROUND:
Survivals of sudden cardiac death (SCD) episodes have recurrence rate of 30-50% within two years,
with malignant ventricular arrhythmias most often responsible1, 2. The overall survival rate for SCD
in USA is 5%. Ninety-five percent of patients suffering their initial event fail to survive to become
candidate for secondary prevention1.Because of the wide spread acceptance of implantable
cardioverter defibrillator ( ICD ) as a method treating the survivals of SCD, attention has turned to
primary prevention 1. Implantable cardioverter-defibrillator (ICD) is highly effective in primary and
secondary prevention of SCD due to life threatening ventricular tachycardia (VT).
OBJECTIVE:
To register and interpret the results of implantation and follow-up of ICD during the period between
2002-2007 in Ibn Al-Bitar hospital.
METHODS:
Sixty patients with standard indications for ICD; data were pooled from patients history, ECG,
Echocardiography, Holter, blood investigation and coronary angiography.75% males and 25% females.
After implantation, class III anti-arrhythmic drugs (Amiodarone) were stopped, except for patients
with a history of supraventricular tachycardia or recurrent VT.
RESULTS:
Coronary artery disease (CAD) was the most common presentation of patients for whom
implantation was done; coronary artery disease (CAD) 43%, dilated cardiomyopathy (DCM) 26%,
and hypertrophic obstructive cardiomyopathy (HOCM) 16%. Sixty-three of them had moderatesevere LV dysfunction (LVEF<40%). Recurrent VT was the most common cause of implantation
(76%). Primary prevention was aimed in (60%) of patients and secondary prevention in 40%. Sixty
percent of those with ICD implanted due to primary prevention fulfil MADIT II (Multicenter
Automatic Defibrillator Implantation Trial II) criteria. The majority of patients had structural heart
disease. Most non-sustained VTs reverted to sinus rhythm by antitachycardia pacing (ATP) therapy
from ICD (90%).All VF events reverted to sinus rhythm by high energy shock from ICD devices.
CONCLUSION:
ICD is highly effective in primary and secondary prevention of life threatening VT/VF.
Survivals of sudden cardiac death (SCD) episodes have recurrence rate of 30-50% within two years,
with malignant ventricular arrhythmias most often responsible1, 2. The overall survival rate for SCD
in USA is 5%. Ninety-five percent of patients suffering their initial event fail to survive to become
candidate for secondary prevention1.Because of the wide spread acceptance of implantable
cardioverter defibrillator ( ICD ) as a method treating the survivals of SCD, attention has turned to
primary prevention 1. Implantable cardioverter-defibrillator (ICD) is highly effective in primary and
secondary prevention of SCD due to life threatening ventricular tachycardia (VT).
OBJECTIVE:
To register and interpret the results of implantation and follow-up of ICD during the period between
2002-2007 in Ibn Al-Bitar hospital.
METHODS:
Sixty patients with standard indications for ICD; data were pooled from patients history, ECG,
Echocardiography, Holter, blood investigation and coronary angiography.75% males and 25% females.
After implantation, class III anti-arrhythmic drugs (Amiodarone) were stopped, except for patients
with a history of supraventricular tachycardia or recurrent VT.
RESULTS:
Coronary artery disease (CAD) was the most common presentation of patients for whom
implantation was done; coronary artery disease (CAD) 43%, dilated cardiomyopathy (DCM) 26%,
and hypertrophic obstructive cardiomyopathy (HOCM) 16%. Sixty-three of them had moderatesevere LV dysfunction (LVEF<40%). Recurrent VT was the most common cause of implantation
(76%). Primary prevention was aimed in (60%) of patients and secondary prevention in 40%. Sixty
percent of those with ICD implanted due to primary prevention fulfil MADIT II (Multicenter
Automatic Defibrillator Implantation Trial II) criteria. The majority of patients had structural heart
disease. Most non-sustained VTs reverted to sinus rhythm by antitachycardia pacing (ATP) therapy
from ICD (90%).All VF events reverted to sinus rhythm by high energy shock from ICD devices.
CONCLUSION:
ICD is highly effective in primary and secondary prevention of life threatening VT/VF.
Keywords
CAD: coronary artery disease
ICD: implantable cardioverter-defibrillator
SCD: sudden cardiac death
VT: ventricular tachycardia.