Which type of shock is caused by pump failure from various cardiac issues?

Cardiogenic shock is specifically characterized by the heart's inability to pump blood effectively due to various cardiac issues such as acute myocardial infarction, congestive heart failure, or arrhythmias. This condition leads to a significant reduction in cardiac output and inadequate tissue perfusion, despite normal or increased blood volume.

In cardiogenic shock, even though the circulatory system may contain an adequate volume of blood, the heart's failure to pump efficiently results in poor delivery of oxygen and nutrients to tissues. This is distinct from hypovolemic shock, which results from significant fluid loss, not heart function issues, or distributive shock, which is associated with vascular resistance problems rather than direct cardiac problems. Additionally, obstructive shock occurs when a physical obstruction prevents the heart from being filled or ejecting blood properly, such as in cases of pulmonary embolism or cardiac tamponade, but it is fundamentally different from cardiogenic shock due to its emphasis on obstruction rather than pump failure. Thus, the defining characteristic of pump failure originating from various cardiac issues specifically matches the definition of cardiogenic shock.