Following the gastrointestinal phase, multisystem organ damage may occur. If death does not occur
in the first 24 hrs. from irreversible circulatory insufficiency, it may result from hepatic or renal failure over
the next several days. Cardiac manifestations include acute cardiomyopathy, subendocardial haemorrhages,
and electrocardiographic changes. The most common changes on an electrocardiogram are prolonged QT
intervals and non-specific ST-segment changes