Electrocardiography (ecg) in pulmonary disorders


  • Electrocardiography (ECG) is a useful adjunct to other pulmonary tests because it provides information about the right side of the heart and therefore pulmonary disorders such as chronic pulmonary hypertension and pulmonary embolism.
    (See also Electrocardiography in cardiovascular disorders.)
    Chronic pulmonary hypertension leading to chronic right atrial and ventricular hypertrophy and dilation may manifest as P waves of higher amplitude (P pulmonale) and ST-segment depression in leads II, III, and aVF; rightward shift in QRS axis; inferior shift of the P wave vector; and decreased progression of R waves in precordial leads.
    Chronic obstructive pulmonary disease (COPD) patients commonly have low voltage due to interposition of hyperexpanded lungs between the heart and ECG electrodes.
    Pulmonary embolism (submassive or massive) may cause acute right ventricle overload or failure, which manifests classically (but not commonly) as right axis deviation (R


    Electrocardiography (ecg) in pulmonary disorders meaning & definition 1 of Electrocardiography (ecg) in pulmonary disorders.

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