Longer duration of electrocardiographic monitoring after cryptogenic stroke is associated with a greater detection of AF .
BACKGROUND Atrial fibrillation ( AF ) is a major cause of stroke .
Although st and ard investigations after an event include electrocardiographic monitoring , the optimal duration to detect AF is unclear .
We performed a systematic review and meta- analysis to determine whether the duration of electrocardiographic monitoring after an ischemic event is related to the detection of AF .
Comparison of detection of arrhythmias in patients with chronic heart failure secondary to non-ischemic versus ischemic cardiomyopathy by 1 versus 7-day holter monitoring.
The purpose of this study was to compare the diagnostic sensitivity of 1-day Holter monitoring versus 7-day Holter monitoring ( 7DH ) to detect atrial and ventricular arrhythmias in a population of stable patients with chronic heart failure and left ventricular dysfunction . Sixty-three consecutive stable patients with chronic heart failure with left ventricular ejection fractions < or = 50 % were included . Blood sample s were obtained , the Minnesota Living With Heart Failure Question naire was administered , and echocardiography , 6-minute walk tests , and 7DH were performed at enrollment . The mean ejection fraction was 35.8 + /- 9.8 % , and the mean age was 55.5 + /- 13.9 years .  Seven-day Holter monitoring did not significantly increase the detection of nonsustained atrial tachycardia or atrial fibrillation . In contrast , the incidence of nonsustained ventricular tachycardia increased in nonischemic patients from 35.1 % on day 1 to 54.1 % on day 7 ( p = 0.01 ) . In ischemic patients , the sensitivity increased from 11.5 % to 46.2 % ( p = 0.004 ) . Two patients without nonsustained ventricular tachycardia on day 1 had episodes of 13 and 16 beats on days 3 and 6 of monitoring . In patients with left ventricular ejection fractions > 35 % and N-terminal-pro-brain natriuretic peptide levels < 1,000 pg/ml , no episodes of nonsustained ventricular tachycardia were detected on day 1 in nonischemic and ischemic patients , but 7DH detected 3 new patients in each group . In conclusion , 7DH clearly improves the detection and allows a better characterization of ventricular arrhythmic episodes but seems to be less useful for supraventricular events
Longer duration of electrocardiographic monitoring after cryptogenic stroke is associated with a greater detection of AF .
BACKGROUND Atrial fibrillation ( AF ) is a major cause of stroke .
Although st and ard investigations after an event include electrocardiographic monitoring , the optimal duration to detect AF is unclear .
We performed a systematic review and meta- analysis to determine whether the duration of electrocardiographic monitoring after an ischemic event is related to the detection of AF .