Heart of an Obese White Male, Anterior View

Description

Anterior thoracic anatomy is rendered with semi-transparent integument and subcutaneous adipose tissue, allowing the heart to be seen in situ within the mediastinum above the diaphragm and between the lungs. The right ventricle occupies most of the sternocostal (anterior) cardiac surface, lying anterior to the left ventricle, while the left ventricle forms the left border and tapers toward the cardiac apex in the left fifth intercostal region near the midclavicular line. Superiorly, the base of the heart relates to the great vessels, with the ascending aorta and pulmonary trunk emerging centrally and the superior vena cava entering the right atrium on the patient’s right. Inferiorly, the central tendon of the diaphragm supports the pericardium. Much of the anterior silhouette is right ventricle. Obesity changes the clinical context of this standard anterior view, because increased epicardial and mediastinal fat can obscure surface landmarks and alter how the cardiac silhouette is perceived on plain radiography and echocardiographic windows. An anterior emphasis on the right ventricle is also the perspective used when teaching why right ventricular infarction can accompany inferior myocardial infarction, and why pericardial effusion or tamponade can present with a prominent right-sided chamber compromise on bedside ultrasound. Needle and trocar trajectories in subxiphoid pericardiocentesis are planned with these relationships in mind, angling toward the left shoulder to avoid the internal thoracic vessels and to reach the pericardial space along the diaphragmatic pericardium. Use this asset in gross anatomy and cardiothoracic blocks to reinforce chamber orientation, the sternocostal surface, and the base-to-apex axis in an adult male torso with increased adiposity. It also fits clinical skills curricula covering chest pain evaluation, focused cardiac ultrasound, pericardiocentesis anatomy, and patient-education materials discussing obesity-associated cardiovascular risk. Anatomical accuracy verified by SciePro's Medical Advisory Board.