Related Experiment Video
Updated: Jan 22, 2026

Author Spotlight: Utilizing Venoplasty Balloon Model in Rodents to Simulate Surgical Interventions for Deep Veins
Published on: May 24, 2024
Superior Vena Cava Syndrome and Otorrhagia During Cardiac Surgery
Azfar K Niazi1, Alexandra S Reese2, Paul Minko3
1Outcomes Research, Cleveland Clinic, Cleveland, USA.
Abstract:
Otorrhagia during cardiac surgery is rare. Otorrhagia combined with other signs of increased venous pressure in the upper body indicates the development of superior vena cava (SVC) syndrome. In this case, ear bleeding, facial engorgement, and conjunctival edema were noticed. The SVC cannula was displaced, leading to SVC syndrome. Repositioning of the cannula led to rapid recovery of the symptoms and an uneventful postoperative course. Providers should be vigilant about signs of SVC obstruction. Transparent coverings and surgical shelves should be used for constant examination of the head and neck to immediately detect changes.
Related Concept Videos
Anatomy of the Heart
Cranial Bones: Superior and Posterior View
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
Nephrotic Syndrome I : Introduction
Acute Coronary Syndrome I: Introduction
Irritable Bowel Syndrome I: Introduction
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
Cardiac Output II: Effect of Stroke Volume on Cardiac Output
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...

