Hypertrophic subaortic stenosis: Symptoms, Diagnosis, Treatment Options, and Daily Management
Hypertrophic subaortic stenosis is an older name for a condition now most often called obstructive hypertrophic cardiomyopathy (HCM)—a disease where the heart muscle becomes...
Hyperviscosity syndrome: Management After an Episode, Monitoring, and Recurrence Prevention
Hyperviscosity syndrome happens when blood becomes too “thick” to flow easily through small vessels. That thickness can rise quickly—often because of very high blood...
Hypocalcemic cardiomyopathy: Symptoms, Causes, Diagnosis, and Reversible Treatment Options
Hypocalcemic cardiomyopathy is a form of heart muscle weakness caused by low calcium in the blood for long enough that the heart cannot contract...
Hypokinesia of the heart: Symptoms, Coronary Causes, and When It’s Urgent
“Hypokinesia of the heart” is not a stand-alone disease. It is a finding that means part of the heart muscle moves less than expected...
Hypomagnesemia-induced arrhythmia: Why Low Magnesium Triggers Dangerous Heart Rhythms
Magnesium is a quiet workhorse in the body: it helps nerves fire, muscles relax, and the heart keep a steady rhythm. When magnesium drops...
Hypoplastic aortic arch: Prenatal Detection, Delivery Planning, and Early Care
A hypoplastic aortic arch is a condition present at birth (congenital—“there from birth”) where the curved section of the body’s main artery is smaller...
Hypoplastic coronary artery disease: Overview, Causes, Symptoms, Diagnosis, and Care
Hypoplastic coronary artery disease is a rare condition present from birth in which one or more of the heart’s main blood vessels are unusually...
Hypoplastic left heart syndrome: Overview, Early Signs, Diagnosis, and Treatment Pathways
Hypoplastic left heart syndrome (HLHS) is a serious heart condition that starts before birth, when the left side of the heart does not form...
Hypoplastic pulmonary valve: Causes, Risk Factors, Warning Signs, and When to Treat
A hypoplastic pulmonary valve is a pulmonary valve that formed smaller than expected before birth. Because this valve controls blood leaving the right side...
Hypoplastic right heart syndrome: Signs in Newborns, Diagnosis, and Treatment Options
Hypoplastic right heart syndrome (HRHS) is a rare heart condition present at birth (“congenital,” meaning formed before birth) in which the right side of...
Hypotension: Causes, Symptoms, Diagnosis, and Effective Treatments
Hypotension means blood pressure that is lower than a person’s body needs at that moment. For some people—especially young, fit adults—naturally lower numbers cause...
Hypovolemic shock: Early Warning Signs, Diagnosis, and Emergency Treatment
Hypovolemic shock happens when the body loses too much circulating fluid—most often blood—so the heart cannot push enough blood to vital organs. “Shock” (critical...
Gerbode defect: Causes, Symptoms, Diagnosis, and Modern Treatment Options
A Gerbode defect is an uncommon heart condition where blood takes an abnormal shortcut between two chambers that normally do not connect. For many...
Gestational hypertension: Causes, Symptoms, Diagnosis, and Safe Treatments
Gestational hypertension is high blood pressure that starts during pregnancy—usually after the midpoint—and was not present before. For many people, it arrives quietly: a...
Giant aortic aneurysm: Symptoms, Rupture Risk, and When to Treat
A giant aortic aneurysm is a dangerously enlarged bulge in the body’s main artery, the aorta. Most aneurysms grow silently for years, but when...
Giant cell arteritis: Symptoms, Vision Loss Warning Signs, and Treatment
Giant cell arteritis is a treatable condition, but it asks for speed and clarity. It happens when certain blood vessels become inflamed and narrowed,...