What kind of information does an EKG provide?

An EKG, or electrocardiogram, primarily provides detailed information about the heart's rhythm and its electrical activity. When the heart beats, it generates electrical impulses that spread through the heart muscle, causing it to contract. An EKG measures these impulses and graphically represents them, allowing healthcare providers to assess the heart's rhythm, detect any irregularities, and identify conditions such as arrhythmias, heart attacks, or other cardiac issues.

This information is crucial for diagnosing various heart conditions, as it reveals how effectively the heart is functioning and whether the electrical signals that coordinate heartbeats are normal. In contrast, other options such as blood type, blood pressure readings, and cholesterol levels are unrelated to what an EKG measures and would require different tests or assessments to obtain that specific information.