Is a PR interval of 158 ms on an electrocardiogram normal?

May 11, 2023 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

A PR interval of 158 ms on an electrocardiogram (ECG) is usually normal. The PR interval refers to the delay time of the heart's electrical activity at the atrioventricular node during an ECG examination. Normally, the PR interval ranges from 120 to 200 ms. A value of 158 ms generally falls within the normal range and typically does not require excessive concern.

Generally, a PR interval of 158ms on an electrocardiogram (ECG) is considered normal. The detailed analysis is as follows:

The PR interval on an ECG typically refers to the delay time of electrical conduction through the atrioventricular (AV) node during cardiac activity. Normally, the PR interval ranges between 120ms and 200ms. A value exceeding this range may indicate prolonged conduction from the atria to the ventricles, which is often associated with myocardial ischemia. Therefore, a measurement of 158ms generally falls within the normal range, and there is usually no need for excessive concern. However, if obvious symptoms of discomfort occur, timely completion of further relevant examinations is recommended. It's advised to remain emotionally stable during ECG testing, avoiding excessive anxiety or stress. If results are normal, there is generally no cause for worry—regular follow-up checks are sufficient. In case of abnormal findings, prompt cooperation with medical treatment is essential to avoid delaying diagnosis and management.

In daily life, it's important to develop healthy habits, maintain regular sleep patterns, avoid staying up late and overexertion, and keep emotional stability. Avoid excessive tension or large emotional fluctuations, as these may increase the burden on the heart.

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