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Haemodynamic changes during anaesthesia in knee-elbow position
G Galimberti1, G Berlot, R Muchada
1Istituto Polidisciplinare di Anestesia, Rianimazione e Terapia Antalgica Ospedale di Cattinara, Trieste Italia. g.galimberti@apice.univ.trieste.it
Minerva Anestesiologica
|October 16, 1999
Summary
Low-dose dobutamine administration improved cardiovascular performance during knee-elbow position surgery. This study evaluated hemodynamic alterations, showing better outcomes with dobutamine, particularly in aortic blood flow (ABF).
Area of Science:
- Anesthesiology and Critical Care Medicine
- Cardiovascular Physiology
- Neurosurgery
Background:
- Surgical procedures in the knee-elbow position can induce significant hemodynamic alterations.
- Evaluating these changes is crucial for patient safety and optimizing anesthetic management.
Observation:
- A prospective study evaluated 24 patients undergoing lumbar discectomy in the knee-elbow position.
- Hemodynamic variables, including aortic blood flow (ABF), were measured using transesophageal Doppler (TED).
- Patients were divided into two groups: one without dobutamine and one receiving low-dose dobutamine perioperatively.
Findings:
- The knee-elbow position led to significant decreases in ABF, systolic volume, and end-tidal carbon dioxide (ETCO2), with a concurrent increase in peripheral vascular resistance.
- Patients receiving dobutamine (Group B) exhibited significantly better hemodynamic variables compared to the control group (Group A).
Implications:
- Perioperative administration of low-dose dobutamine can mitigate adverse hemodynamic changes associated with the knee-elbow position.
- This strategy may enhance cardiovascular stability during neurosurgical interventions requiring this position.
- Further research could explore optimal dobutamine dosing and its long-term effects.