Editing Cardiogenic shock (section)

=== Electrocardiogram ===
An [[ECG|electrocardiogram]] helps to establish the exact diagnosis and guides treatment, it may reveal:
* [[Cardiac arrhythmia|Abnormal heart rhythm]]s, such as [[bradycardia]] (slowed heart rate){{citation needed|date=January 2021}}
* myocardial infarction (ST-elevation MI, [[STEMI]], is usually more dangerous than [[non-STEMI]]s; MIs that affect the ventricles are usually more dangerous than those that affect the atria; those affecting the left side of the heart, especially the left ventricle, are usually more dangerous than those affecting the right side, unless that side is severely compromised){{citation needed|date=January 2021}}
* Signs of [[cardiomyopathy]]{{citation needed|date=January 2021}}