The distance between the heart and the electrodes is greater in obese individuals, as well as those with chronic obstructive pulmonary disease COPD, due to hyperinflation of the chest. Age is also important because QRS amplitudes diminish naturally with increasing age. Hence, young individuals have greater QRS amplitudes and some experts suggest that no index should be used in individuals aged less than 35 years.
Moreover, athletes will often have large QRS amplitudes due to their ventricular remodeling, but they do not have pathological hypertrophy. Finally, women have lower QRS amplitudes than men. Right Ventricular Hypertrophy. Overview of Hypertrophy and Dilatation. Biventricular Hypertrophy.
Atrial Hypertrophy and Dilatation P-mitrale, P-pulmonale. No products in the cart. Sign in Sign up. Search for:. Introduction to ECG Interpretation. Clinical electrocardiography and ECG interpretation. Arrhythmias and arrhythmology. LVH may be present for many years without any noticeable symptoms. As the condition worsens, symptoms may develop , such as:. If you are experiencing any of these symptoms, talk to your health care provider right away so that the problem can be identified and treated.
It's important to treat the causes of LVH early because it can lead to severe problems such as heart failure , sudden cardiac arrest and ischemic stroke. Because LVH can develop silently over several years without symptoms, it can be difficult to diagnose. However, a routine electrocardiogram or echocardiogram can usually diagnose LVH, even before symptoms become noticeable. LVH can often be corrected by treating the underlying problem causing the heart to work too hard. Depending on the type of damage that has occurred, treatment measures may include medications and heart-healthy lifestyle changes to help reduce the pressure in the heart.
If LVH is caused by a heart valve problem, surgery may be needed to repair or replace the valve. Visit our Support Network to talk with others and connect with our heart valve ambassadors.
We are here to help and encourage you in reaching your treatment goals. If a patient who is hypertensive is found to have LVH criteria on ECG, then an echo is only helpful if it will alter your threshold for treatment. If you plan to treat anyway, an echo is of dubious further value. Conversely, in an obese patient, the body fat between the ECG lead and the heart will result in a lower voltage in the precordial leads…and that may be the explanation in this case. In such cases, there would often be other suspicious features on the ECG such as T wave changes or symptoms of possible cardiac origin.
Sinister underlying causes are less likely on the basis of simple voltage criteria for LVH alone. National Institute for Health and Care Excellence. Hypertension: clinical management of primary hypertension in adults. Clinical guideline London: NICE, You must be logged in to post a comment.
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