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Continuous spinal anaesthesia versus single dosing. A comparative study
J A De Andrés1, E Febré, J Bellver
1Department of Anaesthesiology, Intensive Care and Pain Therapy, General University Hospital, Valencia, Spain.
European Journal of Anaesthesiology
|March 1, 1995
Summary
Continuous spinal anesthesia required more time but offered similar efficacy to single-dose spinal anesthesia for orthopedic surgery. Single-dose spinal anesthesia led to more frequent hypotension, while continuous spinal anesthesia had a higher rate of inadequate analgesia.
Area of Science:
- Anesthesiology
- Surgical Procedures
Background:
- Spinal anesthesia is a common technique for orthopedic surgery.
- Both continuous and single-dose spinal anesthesia methods are utilized, each with potential benefits and drawbacks.
Purpose of the Study:
- To compare the efficacy, safety, and procedural aspects of continuous versus single-dose spinal anesthesia in orthopedic surgery patients.
- To evaluate the incidence of inadequate analgesia and hypotension between the two spinal anesthesia techniques.
Main Methods:
- A prospective randomized study involving 108 patients undergoing orthopedic surgery.
- Continuous spinal anesthesia was administered via a 20-gauge catheter, while single-dose spinal anesthesia used a 24-gauge Sprotte needle.
- Local anesthetic doses and segmental levels were recorded, along with procedure time, onset, efficacy, and complication rates.
Main Results:
- Continuous spinal anesthesia took longer to administer (6.7 min vs. 4.9 min, P < 0.05).
- Inadequate analgesia occurred in 11% of continuous spinal anesthesia patients versus 2% of single-dose patients (P = 0.18).
- Hypotension was more frequent with single-dose spinal anesthesia (P < 0.05).
Conclusions:
- Both continuous and single-dose spinal anesthesia are effective for orthopedic surgery, with similar onset and efficacy.
- Continuous spinal anesthesia may be associated with a higher risk of inadequate analgesia, while single-dose techniques present a greater risk of hypotension.
- The study highlights trade-offs between the two spinal anesthesia methods, with catheter manipulation correlating with analgesic failure in the continuous technique.