Zouheir I. Bitar FRCPuk, EDEC; Mohamad Abdelfatah MD; Ossama Sajeh Maadarani, FRCP; Muath Alanbaei, MD; Rashed Juma Al Hamdan, MD – Detecting dilated coronary sinus when assessing patients in an acute emergency with point-of-care ultrasound (POCUS) is important for differential diagnosis, including the detection of persistent left superior vena cava (PLSVC) and right ventricular dysfunction.