Low-dose spinal bupivacaine for total knee arthroplasty facilitates recovery room discharge: a randomized controlled trial.
Summary of "Low-dose spinal bupivacaine for total knee arthroplasty facilitates recovery room discharge: a randomized controlled trial."
Regional anesthesia is the preferred technique for total knee arthroplasty to provide a bridge for early postoperative analgesia, reduce opioid consumption, and improve mobility and rehabilitation. Multiple patient and process factors must be weighed when choosing the appropriate technique to reduce morbidity and facilitate discharge. We hypothesized that a low-dose of intrathecal bupivicaine combined with regional block would facilitate discharge from the postanesthesia care unit (PACU) and reduce postoperative morbidity.
Patients undergoing total knee arthroplasty under spinal anesthesia received either 5 mg (low-dose group) or 10 mg (standard-dose group) isobaric bupivacaine in a double-blind randomized controlled trial. The primary outcome measure was time to achieve eligibility for PACU discharge. Secondary outcome measures included time to recovery of S2 dermatome sensation, time to voiding, rate of bladder catheterization, and time required for nursing intervention in the PACU and after discharge to the surgical ward.
Forty-five of the 49 recruited patients completed the study. Patients receiving low-dose spinal anesthesia were eligible for PACU discharge earlier than those receiving the standard dose (P = 0.0036). Patients receiving the standard dose had significantly delayed recovery of S2 dermatome sensation (P = 0.0035). There was no difference between groups in the amount of time required for nursing intervention in the PACU, but patients receiving low-dose spinal anesthesia required more time for nursing intervention within the first four hours of their arrival on the ward (P = 0.009). None of the patients required intraoperative analgesic supplementation.
In patients undergoing total knee arthroplasty, low-dose intrathecal bupivacaine (5 mg) combined with regional block is associated with a reduced time to achieve eligibility for discharge from the PACU.
Department of Anesthesia, M3-200, Sunnybrook Health Sciences Centre and the Holland Orthopedic and Arthritic Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada, email@example.com.
This article was published in the following journal.
Name: Canadian journal of anaesthesia = Journal canadien d'anesthesie
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/23229869
- DOI: http://dx.doi.org/10.1007/s12630-012-9867-5
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Medical and Biotech [MESH] Definitions
Replacement of the knee joint.
Administration of the total dose of radiation (RADIATION DOSAGE) in parts, at timed intervals.
Partial or total replacement of a joint.
The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.
A syndrome associated with traumatic injury to the cervical or upper thoracic regions of the spinal cord characterized by weakness in the arms with relative sparing of the legs and variable sensory loss. This condition is associated with ischemia, hemorrhage, or necrosis involving the central portions of the spinal cord. Corticospinal fibers destined for the legs are spared due to their more external location in the spinal cord. This clinical pattern may emerge during recovery from spinal shock. Deficits may be transient or permanent.