21 research outputs found
Transcatheter closure of atrial septal communication : impact on P-wave dispersion, duration and arrhythmia in mid-term follow-up
Background: Atrial septal communications (ASCs) include atrial septal defects (ASDs) and patent foramen ovale (PFO).
Aim: The purpose of this study was to assess P-wave dispersion (PWD) and the prevalence of arrhythmia in patients before and after ASC closure.
Methods: We analysed the clinical history and performed 12-lead electrocardiograms, echocardiograms, and 24-h Holter electrocardiograms in patients with ASC, before and six months after ASC closure.
Results: We included patients with ASD (n = 56) and PFO (n = 73). PWD before percutaneous ASC closure was predicted by right ventricular outflow tract (RVOT) proximal diameter, left atrial area, ASD, smoking, and paroxysmal dyspnoea, R2 = 0.67; p < 0.001. RVOT proximal diameter was an independent predictor of PWD, both in patients with ASD and PFO. Six months after successful closure of ASC, a reduction in PWD was observed in the whole group of patients as well as in patients with ASD and PFO considered separately. A decrease in PWD was associated with reduction of maximum P-wave duration. At the same time, in the whole group, we noticed a reduction in the number of supraventricular and ventricular extrasystolic beats and fewer atrial fibrillation (AF) episodes, p < 0.04 for all variables. Postprocedural AF episodes in patients with ASD were predicted by PWD of 80 ms.
Conclusions: Percutaneous closure of ASC is associated with a reduction of PWD and fewer arrhythmia episodes six months after the procedure. PWD predicts AF episodes after ASD closure
Ocena liczby i adekwatno艣ci interwencji, cz臋sto艣ci programowania kardiowerter贸w-defi brylator贸w oraz zmian farmakoterapii u pacjent贸w z kardiomiopati膮 rozstrzeniow膮 w prewencji pierwotnej nag艂ego zgonu sercowego
Introduction. Implantation of cardioverter-defibrillator (ICD) is an acknowledged strategy in primary prevention of sudden cardiac death (SCD). The aim of this study was to assess the number and adequacy of ICD interventions and occurrence of modifications of device parameters and pharmacotherapy changes, in patients with dilated cardiomyopathy receiving primary SCD prevention.
Material and methods. Retrospective analysis included 138 consecutive patients (123 males, 15 females) with ischaemic (IDCM) and non-ischaemic dilated cardiomyopathy (NIDCM), who underwent ICD implantation. The analysis comprised the number of ventricular tachyarrhythmia episodes, the number and appropriateness of ICD interventions, occurrence of ICD reprogramming and pharmacotherapy changes.
Results. ICD interventions occurred in 28% of subjects, pharmacotherapy changes in 27,5% and device parameters modifications in 55,8%. Patient鈥檚 age and absence of atrial fibrillation appeared to be significant factors decreasing the risk of ICD interventions. AF presence was connected with high percentage of inadequate interventions. Ventricular arrhythmias presence and device parameters changes appeared to be more frequent in patients with NIDCM than with IDCM. NIDCM appeared to be an independent risk factor for ICD reprogramming.
Conclusions. ICD interventions are relatively rare in patients receiving primary SCD prevention. Patient鈥檚 age and absence of atrial fibrillation appeared to be significant factors decreasing the risk of ICD interventions. Ventricular arrhythmias presence and device parameters changes appeared to be more frequent in patients with NIDCM than with IDCM.Wst臋p. Implantacja kardiowerter贸w-defibrylator贸w (ICD) jest uznan膮 strategi膮 lecznicz膮 w prewencji pierwotnej nag艂ego zgonu sercowego (SCD). Celem pracy by艂a ocena liczby i adekwatno艣ci interwencji ICD oraz modyfikacji parametr贸w urz膮dzenia i farmakoterapii u pacjent贸w z kardiomiopati膮 rozstrzeniow膮 (DCM) w prewencji pierwotnej SCD.
Materia艂 i metody. Retrospektywnie przebadano 138 pacjent贸w z ICD (123 m臋偶czyzn, 15 kobiet) wszczepionym z powodu niedokrwiennej (IDCM) i nieniedokrwiennej (NIDCM) DCM. Przeanalizowano liczb臋 epizod贸w tachyarytmii komorowej, liczb臋 i adekwatno艣膰 interwencji ICD oraz modyfikacji parametr贸w urz膮dzenia i farmakoterapii.
Wyniki. U 28% pacjent贸w zarejestrowano interwencje ICD, u 27,5% modyfikowano farmakoterapi臋, u 55,8% za艣 zmieniano parametry urz膮dzenia. Wiek chorych oraz brak napad贸w migotania przedsionk贸w (AF) by艂y istotnymi czynnikami zmniejszaj膮cymi liczb臋 interwencji. Obecno艣膰 napad贸w AF by艂a zwi膮zana z istotnym pojawianiem si臋 nieadekwatnych interwencji. Tachyarytmie komorowe i zwi膮zan膮 z tym modyfikacj臋 parametr贸w urz膮dzenia istotnie cz臋艣ciej zanotowano u os贸b z NIDCM ni偶 z IDCM. Nieniedokrwienna DCM jest niezale偶nym istotnym czynnikiem determinuj膮cym liczb臋 modyfikacji parametr贸w urz膮dzenia.
Wnioski. Interwencje ICD serca rzadko si臋 zdarzaj膮 w prewencji pierwotnej SCD. Wiek pacjent贸w oraz brak napad贸w AF s膮 istotnymi czynnikami zmniejszaj膮cymi liczb臋 interwencji ICD. Tachyarytmie komorowe i modyfikacje parametr贸w urz膮dzenia s膮 szczeg贸lnie cz臋ste u pacjent贸w z NIDCM w por贸wnaniu z osobami z IDCM.