International journal of cardiology · 2013
Burden of arrhythmias in patients with Takotsubo cardiomyopathy (apical ballooning syndrome).
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Pant Sadip, Deshmukh Abhishek, Mehta Kathan, Badheka Apurva O, Tuliani Tushar, Patel Nileshkumar J, Dabhadkar Kaustubh, Prasad Abhiram, Paydak Hakan
Аннотация
INTRODUCTION: The objective of our study was to assess the burden of arrhythmias, the gender differences in occurrence of arrhythmias and the impact of these arrhythmias on hospitalization outcomes in patients with Takotsubo Cardiomyopathy (TTC).
METHODS: TTC and various arrhythmias were identified using appropriate ICD-9-CM codes from Nationwide Inpatient Sample (NIS) discharge records 2006-2010. Length of hospital stay (LOS), in-hospital mortality and total charges were used to assess the impact of the arrhythmias on TTC hospitalization. All analyses were performed using SASv9.2 (Cary Institute Inc., Cary, NC).
RESULTS: A total of 16,450 patients were included in the study and 26% (n=4296) of patients had cardiac arrhythmias. Following arrhythmias were present in the descending order of frequency: atrial fibrillation (Afib) 6.9%, ventricular tachycardia (VT) 3.2%, atrial flutter (Afl) 1.9%, ventricular fibrillation and flutter 1%, paroxysmal supraventricular tachycardia (PSVT) 0.8%. Nearly two percent of the patients had sudden cardiac arrest (SCA). Males were more likely to have cardiac arrhythmias in general compared to females (OR: 1.5, 95% CI: 1.3-1.7, p-value 0.001). Occurrence of ventricular tachycardia (OR: 1.7, 95% CI: 1.3-2.2, p-value<0.001) and sudden cardiac arrest OR: 1.6, 95% CI: 1.1-2.2, p<0.001) were significantly higher in males. In contrast, Afib was significantly less in males compared to females (OR:0.8, 95% CI:0.6-0.9). Patients with arrhythmias had significantly longer length of stay, and increased cost of hospitalization and mortality.
CONCLUSIONS: Arrhythmias are present in nearly one-quarter of patients with TTC and worsen the outcome. While TTC has been established as a disease mainly of females, life threatening arrhythmias like VT and SCA are more common in males.
METHODS: TTC and various arrhythmias were identified using appropriate ICD-9-CM codes from Nationwide Inpatient Sample (NIS) discharge records 2006-2010. Length of hospital stay (LOS), in-hospital mortality and total charges were used to assess the impact of the arrhythmias on TTC hospitalization. All analyses were performed using SASv9.2 (Cary Institute Inc., Cary, NC).
RESULTS: A total of 16,450 patients were included in the study and 26% (n=4296) of patients had cardiac arrhythmias. Following arrhythmias were present in the descending order of frequency: atrial fibrillation (Afib) 6.9%, ventricular tachycardia (VT) 3.2%, atrial flutter (Afl) 1.9%, ventricular fibrillation and flutter 1%, paroxysmal supraventricular tachycardia (PSVT) 0.8%. Nearly two percent of the patients had sudden cardiac arrest (SCA). Males were more likely to have cardiac arrhythmias in general compared to females (OR: 1.5, 95% CI: 1.3-1.7, p-value 0.001). Occurrence of ventricular tachycardia (OR: 1.7, 95% CI: 1.3-2.2, p-value<0.001) and sudden cardiac arrest OR: 1.6, 95% CI: 1.1-2.2, p<0.001) were significantly higher in males. In contrast, Afib was significantly less in males compared to females (OR:0.8, 95% CI:0.6-0.9). Patients with arrhythmias had significantly longer length of stay, and increased cost of hospitalization and mortality.
CONCLUSIONS: Arrhythmias are present in nearly one-quarter of patients with TTC and worsen the outcome. While TTC has been established as a disease mainly of females, life threatening arrhythmias like VT and SCA are more common in males.