6th May 2025

High output heart failure

This is a less common form of heart failure and reflects the inability of the heart to meet the body’s increased metabolic demand. This is defined as a resting cardiac output of >8L/min or a cardiac index of >3.9/min/m2. Common causes of high output heart failure include: hyperthyroidism, myeloproliferative disorders, sepsis, thiamine deficiency, arteriovenous fistulae,  pregnancy.