Related Experiment Video
Updated: Oct 9, 2026

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
Evaluation of orthostatic blood pressure testing as a discharge criterion from PACU after spinal anesthesia
D V Knoerl1, P McNulty, C Estes
1Naval Medical Center San Diego, San Diego, CA 92134-1005, USA.
Abstract:
Discharge readiness from a Phase I PACU after spinal anesthesia is frequently determined by recovery of sensory/motor function. However, no data exist indicating that recovery of sensory/motor function adequately predicts hemodynamic stability after spinal anesthesia. The conservative practice of waiting until the sensory/motor effects of spinal anesthesia have completely worn off often requires patients to remain in PACU for prolonged periods of time. The purpose of this study was to determine the safety and efficacy of using orthostatic blood pressure (BP) testing as a discharge criterion from PACU after spinal anesthesia. This study used a prospective, descriptive design to measure changes in mean arterial pressure (MAP) during orthostatic BP testing at 30-minute intervals after admission to the PACU following spinal anesthesia. A convenience sample of 121 patients admitted through the Same Day Surgery (SDS) unit was used. Results show that orthostatic BP criterion was safe and effective as an alternative to sensory/motor criteria in assessing hemodynamic stability and reducing the amount of time patients spend in the PACU after spinal anesthesia. This is a U.S. government work. There are no restrictions on its use.
Related Concept Videos
Pre-Procedural Guidelines for Assessing Blood Pressure
Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Assessment of blood pressure in brachial artery(two-step method)
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Assessing Blood pressure in the Leg
Preparation:
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation