Electrocardiographic Changes in Infectious Diseases
نویسندگان
چکیده
Hospital Physician September 2007 15 E lectrocardiography is a valuable, noninvasive graphical representation of the heart’s electrical activity. Augustus D. Waller, a physiologist from London, published a description of the first human electrocardiogram (ECG) in 1887,1 and since then, the ECG has evolved as a useful tool in diagnosing coronary artery disease, rhythm abnormalities, and certain medical conditions. In addition, the ECG can play an important role in the assessment of the severity of illness in a variety of infections and may at times serve as a marker of cardiac involvement or cardiac complications from infection and provide information on prognosis.2 The ECG manifestations of infections are oftentimes insignificant but can represent a life-threatening complication, such as paraaortic valve abscess in endocarditis. ECG abnormalities in infections can be caused by multiple factors, including direct invasion by the microorganism, the effects of the organism’s toxin, and electrolyte, metabolic, or autonomic system abnormalities caused by the infection. Unfortunately, the ECG is often overlooked in the evaluation of patients with an infectious disease. This article highlights electrocardiographic findings that are associated with bacterial, viral, spirochetal, and parasitic infections and that occur as side effects of antimicrobial therapy (Table 1).
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