| Decreased cardiac preload: |
| Hemorrhage |
| Positional blood pooling |
| Gas embolism |
| Excessive intraabdominal pressure |
| Capnothorax |
| Cardiac tamponade due to capnomediastinum or capnopericardium |
| Decreased cardiac contractility: |
| Anesthetic medication effect |
| Myocardial ischemia or infarction |
| Acidosis due to hypercarbia |
| Decreased SVR: |
| Anesthetic overdose |
| Acidosis due to hypercarbia |
| Anaphylaxis |
| Sepsis |
| Bradycardia: |
| Vagal stimulation |
