ASL LE/2 Maglie - PRESIDIO OSPEDALIERO "F.FERRARI" - CASARANO (LE) DIVISIONE DI CARDIOLOGIA UNITA' CORONARICA
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AUTOMATIC
IMPLANTABLE DEFIBRILLATOR (ICD) OUR
EXPERIENCE WITH PHYLAX ICD G.
Pettinati – D. Melissano – F. De Santis – A. Marzo Division of Cardiology
“F. Ferrari” Hospital Casarano ICD is by now a routine-practised therapy in
patients with life-threatening ventricular tachyarrhythmias to prevent sudden
cardiac death. The objective of our prospective study was to evaluate the
follow-up of patients implanted with Phylax ICDs. METHODS 23 patients (20 male, 3 female, mean age 68 ± 6) enrolled in the study were affected by ischemic-dilated
cardiomyopathy (11), idiopathic dilated cardiomyopathy (7), valvular disease
(2), pulmonary cardiomyopathy (3). All of them were in NYHA class 2-3, with an
Ejection Fraction of 36 ±
13 %. Indications for ICD implantation were Sustained Ventricular Tachycardia
(18) and Ventricular Fibrillation (5). All the patients were implanted with the
single-chamber model (19) or the dual chamber model (4) of the Biotronik Phylax
ICD. RESULTS 21/23 patients (91%) received ICD shocks which
were appropriate and successful in 20/21 patients (95%). In 2 patients out of 23
the ICD delivered unsuccessful shocks causing device reprogramming (1) or
replacement (1). ICD therapy deliveries were observed within 30 days and one
year after implantation; more precisely: in 7 patients within 30 days, 5 within
3 months, 7 within 6 months, 2 within 1 year. In 2 patients ICDs still have not
delivered any therapy. ICDs successfully terminated 4 episodes of Ventricular
Fibrillation with shocks, 16 episodes of Ventricular Tachycardia with
Anti-Tachy-Pacing (ATP) therapies (12 episodes) and with ATP+shocks (4 episodes).
During a follow-up period of 18 months 3/23 patients (13%) died due to
progressive and refractory congestive heart failure: in all these cases the ICD
successfully delivered therapies after implant. In one patient “Arrhythmic
Storm” was observed causing 51 maximal shock deliveries in 24 hours: all of
them were appropriate and effective. This patient is still alive and in a good
clinical condition. The total number of shocks delivered is 127, with a mean
number of shocks per patient of 5,5. CONCLUSIONS Patients with life-threatening ventricular
tachyarrhythmias and pump insufficiency remarkably benefit from the ICD therapy.
In our patients the ICD implantation allowed a 18-months arrhythmic death
survival of 87%. Phylax ICDs showed to be reliable and safe, with appropriate
and successful therapy deliveries in 95% of cases.
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