Chapter 35: Cardiovascular System Assessment

Students learn about coronary circulation patterns and the cardiac conduction system, from the sinoatrial node through the atrioventricular node, bundle of His, and Purkinje fibers, with corresponding electrocardiographic wave interpretations. The chapter extensively covers cardiac mechanical function and hemodynamics, emphasizing cardiac output calculations, stroke volume determinants including preload, contractility, and afterload, and the Frank-Starling mechanism that governs cardiac performance. Vascular system physiology encompasses arterial pressure regulation, capillary exchange mechanisms, and venous return processes, while autonomic nervous system control through sympathetic and parasympathetic pathways, baroreceptor and chemoreceptor responses maintains cardiovascular homeostasis. Age-related cardiovascular changes receive detailed attention, including myocardial hypertrophy, valve calcification, and arterial stiffening that contribute to common geriatric presentations. The assessment process integrates comprehensive subjective data collection focusing on cardiovascular risk factors, functional health patterns, and symptom analysis with systematic objective examination techniques including vital signs, jugular venous distention evaluation, pulse assessment, and cardiac auscultation for heart sounds, murmurs, and abnormal findings. Diagnostic studies span laboratory biomarkers like troponin and brain natriuretic peptide, non-invasive imaging including echocardiography, cardiac computed tomography, and nuclear studies, plus invasive procedures such as cardiac catheterization and electrophysiology studies, with emphasis on nursing responsibilities for patient preparation, safety monitoring, and complication recognition throughout the assessment process.