Use of a Smart Watch for Early Detection of Paroxysmal Atrial Fibrillation: Validation Study.

Background: Wearable devices with photoplethysmography (PPG) technology can be useful for detecting paroxysmal atrial fibrillation (AF), which often goes uncaptured despite being a leading cause of stroke.

Objective: This study is the first part of a 2-phase study that aimed at developing a method for immediate detection of paroxysmal AF using PPG-integrated wearable devices. In this study, the diagnostic performance of 2 major smart watches, Apple Watch Series 3 and Fitbit (FBT) Charge HR Wireless Activity Wristband, each equipped with a PPG sensor, was compared, and the pulse rate data outputted from those devices were analyzed for precision and accuracy in reference to the heart rate data from electrocardiography (ECG) during AF.

Autologous Pericardial Patch Repair for Papillary Fibroelastoma on an Aortic Valve Leaflet.

A 50-year-old man with no history of cardiovascular disease was referred to our hospital because of an abnormal electrocardiogram. Echocardiograms and computed tomograms revealed a 9-mm mass on the underside of an aortic valve leaflet. We chose surgical treatment, to prevent embolic events.

[Impact of Patent False Lumen at the Descending Aorta after Total Aortic Replacement for Acute type A Aortic Dissection].

Objective: Acute type A aortic dissection remains one of the most challenging diseases facing cardiovascular surgeons. It is associated with high mortality and morbidity. However, prevention of disease process progression in the residual dissected aorta is an important aspect of the patient's long-term outcome.