Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is the right - sided biventricular pacer with leads terminating in the right atrial appendage , right ventricle and coronary sinus . There is no pneumothorax , mediastinal widening or pleural effusion . There is bibasilar atelectasis . There is cardiomegaly . No vascular congestion or pulmonary edema .
    OUTPUT:
    
Appropriately positioned biventricular pacing device . No complications .