How are PV loop used to diagnose HFpEF? Before diving deep into the science, let’s clearly answer the key question: How are PV loop used to diagnose HFpEF? Pressure-volume (PV) loops provide direct, real-time measurements of ventricular pressure and volume, helping clinicians detect abnormal relaxation, increased stiffness, and elevated filling pressures—hallmarks of Heart Failure with … Read more
Introduction to Prosthetic Valve Mismatch Prosthetic heart valves save lives, but they are not without complications. One of the most clinically significant issues is prosthetic valve mismatch, a condition where the effective orifice area of a prosthetic valve is too small relative to the patient’s body size or cardiac demands. Among the most informative ways … Read more
Introduction to VA Coupling in Cardiovascular Physiology VA coupling and strategies to augment contractility or afterload when uncoupled are central concepts in modern cardiovascular physiology and critical care medicine. Ventriculo-arterial (VA) coupling describes the mechanical and energetic relationship between the heart and the arterial system it pumps against. When this relationship is balanced, the heart … Read more
Introduction to Single-Ventricle Congenital Heart Disease Congenital heart disease (CHD) represents the most common form of congenital malformation worldwide. Among its most complex forms are conditions in which only one functional ventricle supports systemic and pulmonary circulation. These patients, often referred to as having single-ventricle physiology, pose some of the most difficult diagnostic and management … Read more
Introduction to VA ECMO and Hemodynamic Challenges Veno-arterial extracorporeal membrane oxygenation (VA ECMO) is a life-saving therapy for patients with severe cardiogenic shock or cardiac arrest. It provides temporary circulatory and respiratory support, allowing time for myocardial recovery or transition to definitive therapies. However, despite its benefits, VA ECMO introduces complex hemodynamic changes that can … Read more
Introduction to Pressure–Volume Loop Monitoring Pressure–volume (PV) loop monitoring is a sophisticated cardiovascular assessment technique that provides real-time insight into ventricular performance. Unlike conventional monitoring tools that rely heavily on indirect measures such as blood pressure or cardiac output alone, PV loops capture the dynamic relationship between ventricular pressure and volume throughout the cardiac cycle. … Read more
Introduction to Pressure–Volume (PV) Loops Pressure–volume (PV) loops are one of the most powerful tools used in cardiovascular physiology to understand how the heart works during each heartbeat. They combine pressure and volume changes in the left ventricle into a single diagram that tells a detailed story about cardiac performance. When learning PV loops the … Read more
Introduction Using conductance catheterization to determine suitability of repair in CCTGA patients has emerged as a powerful diagnostic strategy in modern congenital cardiology. Congenitally corrected transposition of the great arteries (CCTGA) is a rare and complex heart condition where the heart’s ventricles and great arteries are anatomically reversed, yet blood flows in a physiologically “corrected” … Read more
Introduction to Pressure–Volume (PV) Loops in Cardiology Pressure–volume (PV) loops are one of the most useful tools in cardiology for understanding how the heart works. A PV loop shows how pressure and volume inside the left ventricle change during one heartbeat. By looking at the shape and size of the loop, doctors and students can … Read more
Baan’s equation forms the mathematical and physiological foundation of conductance-based pressure–volume (PV) loop technology. This method allows real-time, beat-to-beat measurement of left ventricular volume inside the intact, beating heart—making it one of the most powerful tools for studying cardiac mechanics, ventricular-arterial coupling, and contractility. Traditional PV measurements relied on imaging or indicator dilution techniques, which … Read more