Anesthesia – Managing Complications

Anesthetic Management of Commonly Encountered Complications Elizabeth Goudie-DeAngelis, DVM, MS The anesthetic plan was carefully formulated specifically for your patient. You took into account underlying pathologies and the procedure you are performing. The induction went well, but now that your patient is under general anesthesia you are encountering complications. Chances are your patient has hypotension, hypothermia, hypoventilation or a combination of the three. The best way to keep your procedures moving forward and your patient stable is to know how to predict, prevent and treat these three common anesthetic complications. Hypotension We do not have a way to easily, non-invasively, or accurately measure perfusion (the oxygenation of tissues at the capillary level), so in combination with hemoglobin saturation, we use blood pressure to make an approximation of tissue perfusion. Hypotension is defined as a systolic arterial blood pressure (SAP) under 90 mmHg. Ideally, we attempt to keep this number between 90 – 110 mmHg under general anesthesia because an SAP greater than 90 mmHg correlates to a mean arterial blood pressure (MAP) of 60 mmHg. The MAP is the number we are concerned with. With a MAP in the range of 60-120 mmHg the capillary beds of the kidneys and

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