- To assess cardiac function, the paramedic must understand the cardiac cycle
- Auscultated sounds
**S1** Systole Closing of the mitral and tricuspid valves Auscultate at the second intercostal space, medially **S2** End of systole Closing of the aortic and pulmonary valves Auscultate at the left lower sternal border **__Bruits__** Systole Turbulent blood flow around a ≥80% obstruction Auscultate with a bell over the obstruction