doctors your own question and get educational, text answers - it’s anonymous and free!Ĭan a patient with IVCD develop atrial fibrillation?Ĭonclusions: In the patients with structurally normal heart, IVCD was associated with future development of atrial fibrillation. Mild ivcd can be seen in normal healthy people as well. It can be seen in a variety of disorders such as myocarditis, cardiomyopathy, ventricular fibrosis, heart failure, a high potassium level, and following a heart attack. It can be seen in a variety of disorders such as myocarditis, cardiomyopathy, ventricular fibrosis, heart failure, a high potassium level, and following a heart attack.Ĭan a mild IVCD be a sign of heart failure? Sometimes: Intraventricular conduction delay (ivcd) refers to a condition in which electrical conduction through the heart muscle is delayed or slowed. When does intraventricular conduction delay ( IVCD ) occur? Abnormally slow conduction of electricity through the ventricular walls of the heart, resulting in a QRS complex on the electrocardiogram that lasts longer than 0.12 sec but less than 0.16 sec. What does IVCD mean on an electrocardiogram? This is called “intraventricular conduction delay” (IVCD). Ventricular Arrhythmias Blocks in the bundle branches are within the ventricles themselves, causing delays in the propagation of the wave of impulses. What does IVCD stand for?įamilies and physicians often wonder what the terms“intraventricular conduction delay” (IVCD) or “incomplete right bundle branch block” (IRBBB) or “rsR’” on an electrocardiogram mean and what to do with the information. The study protocol was approved by the Institutional Review Board. IVCD was defined as a QRS duration ≥ 120 ms without typical features of LBBB or RBBB, according to accepted criteria. IVCD was defined overall as QRS 101 to 120 ms irrespective of morphology, or as QRS > 120 ms not identifiable as BBB. The main finding of the present study is that nonspecific intraventricular conduction disturbance (IVCD) in an ECG is associated with increased mortality and a markedly elevated risk of sudden arrhythmic death in a general population. Is intraventricular conduction delay serious?Ĭonclusions: Prolonged QRS duration in a standard 12-lead ECG is associated with increased mortality in a general population, with intraventricular conduction delay being most strongly associated with an increased risk of arrhythmic death. All rights reserved.An IVCD is the result of abnormal activation of the ventricles caused by conduction delay or block in one or more parts of the specialized conduction system (bundle of His, bundle branch or purkinje conduction system) resulting in widening of QRS complex. It is suggested that NIVCD may be associated with future occurrence of atrial fibrillation in patients with structurally normal heart and sinus rhythm.Ītrial fibrillation Intraventricular conduction delay QRS complex.Ĭopyright © 2019 European Federation of Internal Medicine. NIVCD significantly increased the risk for AF (hazard ratio, 2.571 95% confidence interval, 1.074-6.156 p = 0.034). In matched cohort 2 (n = 598), the cumulative incidence of atrial fibrillation was significantly higher in the NIVCD group than in the normal QRS group during a follow-up period of 8.8 ± 2.9 years. In matched cohort 1 (n = 690), the NIVCD group exhibited significant slower sinus rate and longer PR interval than the normal QRS group. In the unmatched cohort, the frequencies of male sex and preexisting atrial fibrillation were significantly higher in the NIVCD group than in the normal QRS group. Baseline characteristics, electrocardiographic parameters, and clinical outcomes were compared in the unmatched cohort and the matched cohort.
Patients with structurally normal heart and sinus rhythm were assigned to the NIVCD and normal QRS groups according to propensity score with matching variables of age, sex, hypertension, and diabetes (matched cohort 1), and additional PR interval (matched cohort 2).
NIVCD was defined as QRS duration ≥110 ms without meeting the criteria for bundle branch block. We included 107,838 patients (age, 52.1 ± 15.5 years men, 46.8%) who underwent electrocardiography in outpatient clinics or medical checkup (unmatched cohort). We aimed to elucidate the long-term prognosis of nonspecific intraventricular conduction delay (NIVCD) in patients with structurally normal heart.
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