Open Access

P980<br />Evaluation of the outcomes of radiofrequency catheter ablation in patients with ischemic ventricular tachycardia

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Date: 18 June 2020
Journal: EP Europace Journal , Volume 22 , Issue Supplement_1
Authors: M. Oksul , H. Yorgun , Y. Sener , A. Ates , U. Canpolat , K. Aytemir

ESC Journals

AbstractBackground

Ablation of ventricular tachycardia (VT) is an effective and safe treatment option in symptomatic patients under antiarrhythmic drugs or patients with frequent ICD therapies.

Purpose

We aimed to evaluate outcomes of VT catheter ablation in patients with ischemic VT.

Methods

All of the patients who underwent VT catheter ablation between June 2014 and November 2018 were included.

Results

128 patients (120 male, 8 female) were included and mean age was 65 ± 10 years. Mean ejection fraction was 28.6 ± 8.2 %. Baseline characteristics were listed in Table-1.  Mean follow-up was 22.3 ± 6.4  months. 52 (46.6 %) patients were admitted with electrical storm. Acute success rate was 96.6%. Complications including transient ischemic attack, deep venous thrombosis, pericardial effusion and inguinal hematoma were developed in 6 patients.  Recurrence of VT was occured in 44 (34.4 %) patients and the presence of PCI history and admission with electrical storm were predictors of recurrence. All cause mortality was occured in  39 patients and predictors of all cause mortality was detected as follows; diabetes, NYHA stage >2, lower levels of EF and higher BNP levels. Cardiovascular mortality was developed in 28 patients and predictors were defined as, lower levels of EF, higher BNP levels and number of shock after index ablation. VT recurrence was not found to be related with both cardiovascular and all cause mortality.

Conclusion

VT ablation is a safe and effective option in patients with ischemic VT who are symptomatic despite optimal medical treatment. Admission with electrical storm and history of PCI were predictors of VT recurrence after ablation. Higher levels of BNP, lower EF values are related with both all cause and cardiovascular mortality.

Table-1

Gender, male, (%)120(93,8)
Age(year)65,5 ± 9,7
HT93(72,7)
DM35(27,3)
AF41(32,0)
NYHA class(pre-ablation) IIIIII IV71(55,5)27(21,1)25(19,5) 5(3,9)
Previous PCI83(64,8)
Previous Cardiac surgery CABG AVR MVR72(56,3) 70(54,7 1(0,8) 4(3,1)
LV EF (%)≤3031-40 ≥4128,6 ± 8,290(70,3)28(21,9) 10(7,8)
Electrical storm52(40,6)
LV EDD (mm)63,8 ± 8,5

Baseline characteristics

About the contributors

M Oksul

Role: Author

H Yorgun

Role: Author

Y Z Sener

Role: Author