However complete atrioventricular block, heart failure, sick sinus syndrome and all-cause mortality were not increased in the patients with IVCD. However complete atrioventricular block (HR 0.13, p=0.10), heart failure (HR 1.69, p=0.20), sick sinus syndrome (HR 0.39, p=0.16) and all-cause mortality (HR 0.79, p=0.79) were not increased in the IVCD group.Ĭonclusions: In the patients with structurally normal heart, IVCD was associated with future development of atrial fibrillation. All AV nodal blocking medications (e.g., adenosine, calciumchannel blockers, beta blockers) should be used with caution in these patients when treating an irregular or widecomplex SVT. And using univariate Cox’s regression analysis, only the risk of atrial fibrillation was increased in the IVCD group (hazard ratio(HR) 1.97, p=0.002). The SVT may appear as a narrow or widecomplex QRS, depending on AV node involvement and the direction of the reentry circuit. Results: During the follow-up of 6.9 ± 3.2 years, the cumulative incidence rates of complete atrioventricular block, heart failure, atrial fibrillation, sick sinus syndrome and all-cause mortality in the IVCD group were higher than no IVCD group (all P < 0.001, except for all-cause mortality (P=0.049)). This results in a regular but rapid heartbeat that starts and stops abruptly. It occurs when a short circuit rhythm develops in the upper chamber of the heart. In a matched-cohort design, 353 patients (IVCD group) (male 83.9% with a mean age of 52.2☑3.3 years) were matched for age and sex with 1060 patients (no IVCD group) who had neither IVCD nor structural heart diseases. Paroxysmal Supraventricular Tachycardia (PSVT) Paroxysmal supraventricular tachycardia (PSVT) is a type of abnormal heart rhythm, or arrhythmia. The patients were excluded if they had structural heart diseases, such as myocardial infarction, valvular heart disease, congenital heart disease and cardiomyopathy. IVCD was defined QRS >110ms without the criteria of complete or incomplete bundle-branch block. Prolonged duration of the QRS complex (QRSd) in a 12-lead ECG is associated with adverse prognosis in patients with cardiac disease, 1 4 but in the general population, the significance of QRSd is not as well established. Subjects with IVCD were older and predominantly males, had lower cholesterol values, and had a shorter JTc interval. The baseline characteristics of subjects with and without IVCD are shown in Table 1. Methods: Between 20, we evaluated the patients who underwent 12-lead electrocardiography. IVCD was present in 67 (0.6 of the total population) of the 147 subjects with prolonged QRSd. Hypothesis: Long-term prognosis of patients with IVCD in structurally normal heart would be poorer than patients without IVCD. This study was performed to elucidate long-term prognosis of IVCD in structurally normal heart. Results Only 10 of the 20 analyzed criteria had a specificity of 0.9 during RAP at the highest rate.
Introduction: Long-term prognosis of nonspecific intraventricular conduction delay(IVCD) remains unclear. Finally, we used the criteria with a specificity of 0.9 in a test sample of 53 patients with preexisting IVCD and wide complex tachycardia to confirm their validity. Customer Service and Ordering Information.
Stroke: Vascular and Interventional Neurology.Journal of the American Heart Association (JAHA).Circ: Cardiovascular Quality & Outcomes.Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB).
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