Sep 1, 2021 · Heart rate variability, or HRV, is a shift in timing between heartbeats. Learn how it may be an indicator of future health problems and what you can do about them.

A normal heart rate for most adults is 60 to 100 beats per minute. Learn what factors affect your heart rate and when to seek medical care.

Mar 12, 2026 · Fetal heart rate monitoring measures the fetal heart rate during pregnancy, labor and delivery. There are many types of devices.

Jul 5, 2022 · Heart rate monitors are devices that track your heart and pulse rate. Depending on type, they can be highly accurate and have various benefits and capabilities.

A Holter monitor is a device you wear that records your heart’s electrical activity for 24 to 48 hours. It provides more insight than an EKG. Learn why you may need to wear one.

Oct 4, 2022 · A nonstress test (NST) is a test in pregnancy that measures fetal heart rate in response to movement and contractions. Results are either reactive or nonreactive.

Mar 4, 2026 · Fetal distress, or non-reassuring fetal status, occurs when a fetus has a decreased heart rate and less movement.

Ectopic heartbeat happens when your heart beats prematurely (too soon). This irregular heartbeat is usually harmless. It can result from caffeine, alcohol or stress.

Heart rate recovery is the difference between your peak heart rate during exercise and your heart rate soon after you stop. It’s measured in beats per minute (bpm).

Oligohydramnios is when you have low amniotic fluid during pregnancy. Learn the causes and treatments.