A normal PR interval on an EKG measures between 0.12 to 0.20 seconds (120-200 milliseconds), representing the time it takes for electrical signals to travel from your heart’s upper chambers…

A wavy EKG line usually means electrical interference or poor electrode contact is disrupting your signal. Most wavy patterns can be fixed by checking your electrode placement and reducing nearby…

EKG devices measure your heart’s electrical activity while pulse oximeters count heartbeats through blood flow changes, which can create different heart rate readings between the two devices. These differences happen…

EKG paper squares follow the 0.04-second rule, where each small square represents 0.04 seconds of time on the horizontal axis. You can read EKG paper by counting squares to measure…

Normal sinus rhythm on an EKG shows a heart rate between 60-100 beats per minute with consistent P waves before each QRS complex and regular spacing between heartbeats. You can…

Most home EKG devices are 85-95% accurate for detecting basic heart rhythm problems, but they’re not as precise as hospital-grade machines. Your home EKG can catch common issues like atrial…

An “inconclusive” EKG result means the test couldn’t provide a clear reading of your heart’s electrical activity due to technical issues, patient movement, or unclear signal patterns. This doesn’t mean…

Athletes need EKG monitoring to detect dangerous heart rhythm abnormalities that intense training can mask or trigger, potentially preventing sudden cardiac events during competition. Regular EKG screening helps athletes identify…

Home EKG devices cannot reliably detect Brugada syndrome because this condition often shows normal heart rhythms during routine monitoring. Most home EKG devices lack the specialized leads needed to identify…

Regular EKG monitoring helps people with high cholesterol detect heart problems early, often before symptoms appear. High cholesterol damages arteries over time, making EKG screening a smart way to catch…