Regional anesthesia
-
Regional anesthesia · Sep 1995
Randomized Controlled Trial Clinical TrialHyperosmolarity does not contribute to transient radicular irritation after spinal anesthesia with hyperbaric 5% lidocaine.
In addition to major neurologic injury, local anesthesia toxicity may also include less severe but more common neurologic side effects. The authors recently observed symptoms suggestive of transient radicular irritation in one third of patients after spinal anesthesia with hyperbaric 5% lidocaine, whereas evidence of neurologic symptoms was lacking with hyperbaric 0.5% bupivacaine. The purpose of this prospective double-blinded study was to evaluate if the high osmolarity of hyperbaric 5% lidocaine solution might contribute to the development of transient radicular irritation. ⋯ The results suggest that transient radicular irritation did not result from the marked hyperosmolarity of the hyperbaric 5% lidocaine. However, because lidocaine and bupivacaine were not administered at equipotent dosages, the relative potential for both drugs to induce transient radicular irritation remains to be determined.
-
Regional anesthesia · Sep 1995
Randomized Controlled Trial Clinical TrialSubarachnoid fentanyl augments lidocaine spinal anesthesia for cesarean delivery.
Fentanyl at doses of 6.25 microgram or more, when to hyperbaric bupivacaine for spinal anesthesia for cesarean delivery, has been reported to markedly increase the duration of analgesia. In this study, subarachnoid fentanyl 15 micrograms was evaluated as the sole adjunct to hyperbaric lidocaine spinal anesthesia in parturients undergoing cesarean delivery at term, to determine its effect on the duration of analgesia and side effects perioperatively. ⋯ The addition of fentanyl 15 micrograms to hyperbaric lidocaine for subarachnoid anesthesia for cesarean delivery increases the duration of effective analgesia by approximately 30 minutes compared to plain hyperbaric lidocaine, and provides a protective effect regarding nausea and vomiting in the perioperative period.
-
Regional anesthesia · Sep 1995
Randomized Controlled Trial Clinical TrialIntravenous ketorolac and subarachnoid opioid analgesia in the management of acute postoperative pain.
Ketorolac is a parenteral nonsteroidal anti-inflammatory drug that provides analgesia through a peripheral mechanism. The purpose of this study was to evaluate whether the scheduled administration of intravenous ketorolac improves the analgesia provided by subarachnoid opioids after surgery. ⋯ When used in conjunction with subarachnoid opioids, the scheduled administration of intravenous ketorolac during the first 24 hours after major urologic surgery significantly enhances analgesia and reduces the need for supplemental intravenous opioids without affecting the incidence of side effects. Intravenous ketorolac is a safe and useful adjuvant to subarachnoid opioids in the management of acute postoperative pain.
-
Regional anesthesia · Sep 1995
Randomized Controlled Trial Comparative Study Clinical TrialThe effect of posture on the induction of epidural anesthesia for peripheral vascular surgery.
A study was done to determine whether a difference existed in the quality and time to maximum anesthesia between the induction of lumbar epidural anesthesia in the sitting and supine position in patients undergoing infrainguinal arterial reconstruction. ⋯ When lumbar epidural anesthesia was induced in the sitting rather than supine position, the time to maximum cephalad spread was shorter and correlated directly with the height and BSA of the patient. The position of the patient during induction had no effect on the final level of cephalad spread and degree of motor block.
-
Regional anesthesia · Sep 1995
Randomized Controlled Trial Clinical TrialDouble-blind randomized evaluation of intercostal nerve blocks as an adjuvant to subarachnoid administered morphine for post-thoracotomy analgesia.
Thoracotomy is associated with pain and compromised pulmonary function. Intercostal nerve blocks (INB) and subarachnoid morphine (SM) act on different portions of the pain pathway. Each is effective for post-thoracotomy pain relief. The combination of these two modalities in relieving post-thoracotomy pain and improving postoperative pulmonary function has not been investigated. ⋯ Although postoperative INB provided modest improvements in pain and pulmonary function when used as an adjuvant to 0.5 mg SM for post-thoracotomy analgesia, the benefits were transient. The authors do not recommend adding INB for patients undergoing lateral thoracotomy who receive 0.5 mg SM.