10 Chest Wall Visual Changes Associated With Respiratory and Cardiac Conditions

8. Visible Pulsations - Cardiac Activity and Vascular Abnormalities

Visible pulsations of the chest wall provide important visual clues about underlying cardiac function, vascular abnormalities, and hemodynamic status, representing a valuable component of cardiovascular assessment. Normal cardiac activity typically produces subtle, barely visible pulsations at the cardiac apex, located in the fifth intercostal space at the midclavicular line in healthy individuals. However, various pathological conditions can create abnormally prominent or displaced visible pulsations that indicate significant underlying cardiovascular disease. Left ventricular hypertrophy and dilatation can cause the apical impulse to become more prominent, displaced laterally, and sustained in character, reflecting increased cardiac workload and altered ventricular geometry. Right ventricular enlargement may produce visible pulsations along the left sternal border, particularly in the third and fourth intercostal spaces, indicating conditions such as pulmonary hypertension or congenital heart disease. Aortic aneurysms can create visible pulsations in the suprasternal notch or along the right sternal border, while pulmonary artery dilatation may cause prominent pulsations in the second left intercostal space. Hyperdynamic circulation states, such as those seen in hyperthyroidism, anemia, or fever, can make normal cardiac pulsations more visible and prominent throughout the precordium. The assessment of visible pulsations should be performed with the patient in various positions, including supine and left lateral decubitus positions, to optimize visualization of cardiac activity and identify abnormal impulses that may not be apparent in the upright position.