In medical settings, CV most commonly stands for “cardiovascular,” referring to the heart and blood vessels. But the abbreviation has several other meanings depending on the context, including central venous (as in central venous pressure or catheters), coefficient of variation in laboratory testing, and curriculum vitae in academic medicine. If you’ve seen “CV” on a medical chart, test result, or clinical note and weren’t sure what it meant, here’s a breakdown of each usage.
Cardiovascular: The Most Common Meaning
When a doctor writes “CV” in a chart or uses it in conversation, they’re almost always referring to the cardiovascular system. This includes the heart, arteries, veins, and capillaries, all working together to circulate blood throughout the body. The system runs two main loops: pulmonary circulation, which sends blood to the lungs to pick up oxygen, and systemic circulation, which delivers that oxygenated blood and nutrients to every tissue and organ.
You’ll encounter this abbreviation in several common phrases. A “CV exam” is the portion of a physical where a clinician listens to heart sounds, checks pulses in your wrists, ankles, and neck, and evaluates skin color and temperature as signs of healthy blood flow. “CV risk factors” are conditions that raise your chances of heart disease or stroke, such as high blood pressure, high cholesterol, smoking, and type 2 diabetes. “CV disease” (or CVD) is an umbrella term covering heart attacks, strokes, heart failure, and other conditions affecting the heart and blood vessels.
Cardiovascular disease is the leading cause of death worldwide. The World Health Organization estimates that 19.8 million people died from CVDs in 2022, roughly 32% of all global deaths that year. About 85% of those deaths were caused by heart attacks and strokes specifically.
Central Venous: Catheters and Pressure
In hospital and critical care settings, CV often refers to “central venous.” A central venous catheter (CVC) is a thin, flexible tube inserted into a large vein, typically in the neck, chest, or groin, to deliver medications, fluids, chemotherapy, or nutrition directly into the bloodstream. An estimated 8% of hospitalized patients need one at some point during their stay. You might hear staff refer to “CV access” or “CV line” when discussing this type of catheter.
Central venous pressure (CVP) is a measurement of blood pressure inside the large veins near the heart. A normal reading falls between 8 and 12 mmHg, though it shifts depending on how much fluid is in the body. Doctors use CVP to help gauge whether a patient is dehydrated, overloaded with fluid, or experiencing heart failure. If you see “CVP” on a monitor in an ICU, that’s what it’s tracking.
Coefficient of Variation: Lab Test Precision
In clinical laboratories, CV stands for “coefficient of variation,” a statistical measure that tells technicians how consistent a test is. It’s calculated by dividing the standard deviation of repeated measurements by their average, then expressing the result as a percentage. A low CV means the test produces very similar results each time it’s run on the same sample, which signals good precision.
This matters because lab tests are never perfectly identical from run to run. The CV gives a standardized way to compare reliability across different tests and different concentration levels of whatever is being measured. For example, if a blood glucose assay has a CV of 2%, that means repeated measurements on the same blood sample typically vary by about 2% from the average. You’re unlikely to see this on your own lab report, but it’s the quality control metric working behind the scenes to ensure your results are trustworthy.
Curriculum Vitae in Academic Medicine
Outside of clinical charts, CV in medicine frequently means “curriculum vitae,” the detailed document physicians and researchers use to chronicle their careers. Unlike a standard resume, which is typically one to two pages, a medical CV is comprehensive. It lists educational background, board certifications, clinical positions, research publications, grants, teaching roles, committee memberships, awards, and volunteer work, often spanning dozens of pages for experienced physicians.
Medical CVs come into play during residency applications, faculty hiring, grant submissions, and promotion reviews. Institutions often have specific formatting expectations, and applicants are advised to organize entries in consistent chronological order with accurate dates throughout. If someone in a medical school or hospital mentions their CV, this is what they mean.
Other Less Common Meanings
A few rarer uses of CV appear in specialized contexts. “CVA,” a closely related abbreviation, can mean either cerebrovascular accident (the clinical term for a stroke) or costovertebral angle (a location on the back where the lowest rib meets the spine, relevant in kidney exams). These aren’t CV on their own, but they’re close enough in medical shorthand that they sometimes cause confusion.
When you encounter CV in a medical document, the surrounding context usually makes the meaning clear. A note about heart rate, blood pressure, or cholesterol points to cardiovascular. A discussion of IV lines or fluid management suggests central venous. A percentage following repeated lab measurements indicates coefficient of variation. And if it’s attached to someone’s name and career history, it’s a curriculum vitae.