Explore the intricacies of cardiac function in this comprehensive 22-minute video lecture. Delve into the nuances of the cardiac cycle, examining pressure-volume (PV) loops and their variations in different pathological states. Gain insights into myocardial work and oxygen consumption, essential concepts in cardiovascular physiology. Follow along with a structured presentation that covers key topics including an in-depth look at PV loops, the complexities of the cardiac cycle, and the relationship between myocardial work and oxygen utilization. Conclude with a summary that reinforces the main points, providing a solid foundation for understanding heart function and its physiological implications.