Line Plot from Scientific Research

An episode of spontaneous cardiac arrest based on pulseless electrical activity in a patient in the TAVI group related to acute aortic valve regurgitation after pre-dilatation. The initial recording (on the left) shows sinus rhythm with a blood pressure of 90/45 mm Hg and a normal pulsatile photoplethysmography signal. The panel in the middle is a recording of the initial haemodynamic instability with a ventricular rhythm on the electrocardiograph with a blood pressure of 55/35 mm Hg (mean arterial pressure 42 mm Hg) and decreased amplitude on the photoplethysmography recording. The dashed line in the figure indicates algorithm alarming for circulatory arrest. In the panel on the right, there is pulseless electrical activity, with a flat line on the arterial blood pressure and photoplethysmography curve. The episode was successfully detected by the circulatory arrest detection algorithm. After short-lasting cardiopulmonary resuscitation, the patient had a return of spontaneous circulation. TAVI=transcatheter aortic valve implantation.

DOI