The effect of four different surgical prone positions on cardiovascular parameters in healthy volunteers

Abstract

Summary

Effect of Prone Positioning Systems on Hemodynamic and Cardiac Function During Lumbar Spine Surgery: An Echocardiographic Study

“…Although the hips are slightly elevated above the level of the heart and compression sleeves are placed on all patients, there still was reduced preload in these patients, as represented by a diminished LVEDA. These results are similar to those of Wadsworth et al, 6 when patients were placed in the knee-chest position, one similar to that produced by the Andrews frame.…”

Awake Endotracheal Intubation and Prone Patient Self-Positioning: Anesthetic and Positioning Considerations During Percutaneous Nephrolithotomy in Obese Patients

“…22 In properly positioned prone obese patients, cardiovascular function can be maintained. 23 In the prone position, the abdominal viscera is unloaded; if the patient is properly positioned (abdominal wall allowed to hang freely), there is decreased splinting of the diaphragm and compression of the inferior vena cava, which minimizes adverse effects on cardiopulmonary dynamics.…”

Epidural anesthesia in elective lumbar microdiscectomy surgery: is it safe and effective?

“…Other advantages of epidural anesthesia over general anesthesia are lower blood losses, less need for parenteral narcotics, lower incidence of urinary retention, less operation time, verbal communication of surgeon and the patient during the operation to assess adequacy of decompression, self-positioning of the patient to avoid pressure over brachial plexus or other pressure points, less hypertension episodes, less post-operative pain, nausea and less time to arousal from sedation (1, 2, 5, 8, 11, 16). Less blood loss and hypotension are due to sympathetic blockage and more inhibition of surgically induced stress hormones through epidural anesthesia (1,6,7,15,17). Less blood loss also facilitates surgery and lessens operation time (1).…”