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BACKGROUND Assessment of left ventricular (LV) capture is of paramount importance in patients with biventricular (BiV) pacing. Our goal was to identify electrocardiographic features that differentiate between BiV and right ventricular (RV)-only pacing in patients with nonapical RV leads. METHODS The study enrolled 300 consecutive patients with BiV devices(More)
AIMS To compare the sensitivity (SN), specificity (SP), and diagnostic accuracy (ACC) for ventricular tachycardia (VT) diagnosis of five electrocardiographic methods for wide QRS-complex tachycardia (WCT) differentiation, specifically the Brugada, Bayesian, Griffith, and aVR algorithms, and the lead II R-wave-peak-time (RWPT) criterion. METHODS AND(More)
AIMS Phrenic stimulation (PS) is a major limiting factor for both left ventricular (LV) lead placement and cardiac resynchronization therapy (CRT) delivery. We have developed a protocol allowing for LV lead implantation at a PS site based on specific criteria regarding phrenic and LV acute capture thresholds. The present study examined long-term outcomes in(More)
A case of a 30-year-old male with paroxysmal long RP tachycardia is presented. During electrophysiological study the clinical arrhythmia (atypical atrioventricular nodal reentrant tachycardia - AVNRT) was misdiagnosed as ectopic left atrial tachycardia due to ventricle-atrium-atrium-ventricle (VAAV) response after entrainment, eccentric atrial activation(More)
BACKGROUND To assess the influence of electrocardiographic (ECG) pattern on prognosis and complications of patients hospitalized with acute pulmonary embolism (APE). METHODS We performed a retrospective analysis of 292 patients who had confirmed APE. There were 183 females and 109 males, the age range was 17 to 89 years, and the mean age was 65.4 ± 15.5(More)
AIMS Periodic breathing with central sleep apnoea (CSA) is common in heart failure patients and is associated with poor quality of life and increased risk of morbidity and mortality. We conducted a prospective, non-randomized, acute study to determine the feasibility of using unilateral transvenous phrenic nerve stimulation for the treatment of CSA in heart(More)
AIMS To investigate the effect of implantation-related characteristics, especially lead position and left ventricular (LV)-paced QRS morphology, on long-term mortality and morbidity in cardiac resynchronization therapy (CRT) patients. METHODS AND RESULTS The study retrospectively analysed 362 consecutive patients who underwent CRT device implantation over(More)
Two cases of hypertrophic cardiomyopathy with massive hypertrophy and high defibrillation threshold (DFT) are described. A 14-year-old boy, whose single risk factor for sudden death was extreme hypertrophy with maximum interventricular septum (IVS) thickness of 43 mm, survived an episode of ventricular fibrillation. During ICD implantation DFT testing(More)