Which condition might present with low voltage ECG findings?

Low voltage ECG findings are characterized by small amplitude QRS complexes, which can indicate a variety of underlying conditions. In the context of amyloidosis, this presentation occurs due to the infiltration of amyloid proteins into the myocardial tissue. This infiltration can lead to structural changes in the heart, causing it to be less efficient in generating and conducting electrical signals. As a result, the electrical activity captured on the ECG appears diminished, manifesting as low voltage readings.

In cases of amyloidosis, the heart is often affected due to the deposition of amyloid fibrils, leading to stiffening of the heart muscle and potentially contributing to restrictive cardiomyopathy. This combination of factors can result in the characteristic low voltage findings on an ECG.

Other conditions listed might produce various ECG changes, but they typically do not result specifically in low voltage readings. For instance, heart failure commonly shows signs of left ventricular hypertrophy or might reveal changes consistent with volume overload rather than direct low voltage. Myocardial infarction is more likely to show ST segment changes or Q waves rather than low voltage. Pericarditis typically presents with diffuse ST elevation across the leads rather than low voltage. Thus, the specific association of amyloidosis with low voltage findings on ECG is