Treatment for Hypotension Secondary to Sedation
Initial Management
- The American Society of Anesthesiologists recommends assessing severity of hypotension and monitoring vital signs at regular intervals (before procedure, after sedative administration, during procedure, during recovery, and before discharge) 3
- For mild hypotension, administer small boluses (5-10 mL/kg) of normal saline or balanced crystalloids, as recommended by the American Heart Association 4, 2
- Consider patient positioning - elevate legs to improve venous return, as suggested by the European Society of Cardiology 5
- Reduce or temporarily discontinue sedative medications, as recommended by the European Society of Cardiology 6
Fluid Resuscitation
- The Society of Critical Care Medicine recommends administering crystalloids as the fluid of choice for initial resuscitation 2
- An initial fluid challenge of 30 mL/kg is recommended for significant hypotension, according to the Society of Critical Care Medicine 1, 2
- Continue fluid administration as long as there is hemodynamic improvement based on dynamic or static variables, as suggested by the Society of Critical Care Medicine 2
- Consider albumin in addition to crystalloids when substantial amounts of crystalloids are required, as recommended by the Society of Critical Care Medicine 2
- Avoid hydroxyethyl starches due to potential adverse effects, as warned by the Society of Critical Care Medicine 2
Vasopressor Therapy
- The Society of Critical Care Medicine recommends initiating vasopressor therapy if hypotension persists despite adequate fluid resuscitation 1, 2
- Target a mean arterial pressure (MAP) of 65 mmHg, as recommended by the Society of Critical Care Medicine 1, 2
- Norepinephrine is the first-choice vasopressor for hypotension unresponsive to fluids, according to the Society of Critical Care Medicine 2
- For refractory hypotension, consider adding vasopressin (up to 0.03 U/min) or epinephrine to norepinephrine, as suggested by the Society of Critical Care Medicine 2
- Dopamine should only be considered in highly selected patients with low risk of tachyarrhythmias or with relative bradycardia, as recommended by the Society of Critical Care Medicine 2
Special Considerations
- For patients on beta-blockers, consider glucagon (5-10 mg infused over several minutes followed by 1-5 mg/hour IV infusion), as recommended by the American Heart Association 4
- For sedation-induced hypotension in patients with orthostatic hypotension, test for orthostatic hypotension before starting or intensifying BP-lowering medication, as suggested by the European Society of Cardiology 7
- Pursue non-pharmacological approaches as first-line treatment for orthostatic hypotension, as recommended by the European Society of Cardiology 7
- Consider switching medications that worsen orthostatic hypotension rather than simply reducing dosage, as suggested by the European Society of Cardiology 7