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Homeostasis Positive Feedback Video
ACLS Certification Association videos have been peer-reviewed for medical accuracy by the ACA medical review board.
Video at a Glance
- A positive feedback loop employs mechanisms of amplification instead of corrective mechanisms.
- The body begins with a starting point, a change occurs, the change is detected, an amplifying response promotes further change, and the cycle continues.
- For example, a starting systolic blood pressure of 110 changes due to a hemorrhage and causes a drop in cardiac output and blood supply, and the response is weaker heart strokes, which further decrease cardiac output and amplify the decreased blood pressure.
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