Articles: nerve-block.
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Anesthesia and analgesia · Jan 2004
Clinical TrialQuantitative and selective evaluation of differential sensory nerve block after transdermal lidocaine.
We evaluated the effect of transdermal lidocaine on differential sensory nerve block in 15 healthy volunteers. Lidocaine 10% gel was applied topically to a forearm and covered with a plastic film. Three types of sensory nerve fibers (Abeta, Adelta, and C fibers) were evaluated with a series of 2000-, 250-, and 5-Hz stimuli using current perception threshold (CPT) testing. Sensations of touch, pinprick, cold, and warmth were also measured. These measurements were made before the topical lidocaine (baseline), 60 min after the draping (T0), and at 1-h intervals until 5 h after T0 (T1 to T5). A significant increase in CPT compared with baseline was observed until T2 at 5 Hz and T4 at 250 Hz, whereas the increase in CPT at 2000 Hz continued throughout the study period. All subjects experienced the disappearance of pinprick and cold sensations, whereas touch and warmth sensations were detectable during the study period. We conclude that when lidocaine is applied transdermally, the sensitivity of nerves to local anesthetics is proportional to the axon diameters. However, pinprick and cold sensation are affected more strongly than other sensations at receptor sites. ⋯ We evaluated the effect of transdermal lidocaine on differential sensory nerve block in healthy volunteers. Our results show that the sensitivity of nerves to local anesthetics is proportional to the axon diameter.
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The objective of this study is to assess both intra and post operative analgesia in infants undergoing umbilical hernia repair under general anaesthesia with neither opioid nor muscle relaxant, associated with a para umbilical block. It's a prospective study covering a 15 months period. The study included 75 infants (age = 5 months - 13 years; body weith = 6 kg - 35 kg). ⋯ Surgical conditions were considered as being godd or satisfactory in 90.6% and 9.4% of cases, respectively. Post operative analgesia, assessed 1 and 6 hours after completion of surgery was convenient in 93.3% of infants. The block appears as simple, most after efficient and safe in umbilical surgery.
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Reg Anesth Pain Med · Jan 2004
Editorial CommentRestricting spinal block to the operative side: why not?
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J Head Trauma Rehabil · Jan 2004
Occipital nerve blocks in postconcussive headaches: a retrospective review and report of ten patients.
Headaches are common following traumatic brain injuries of all severities. Pain generators may be in the head itself or the neck. Headache assessment is discussed. ⋯ Finally, a retrospective study of 10 postconcussive patients with headaches who were treated with greater occipital nerve blocks is presented. Following the injection(s), 80% had a "good" response and 20% had a "partial" response. Occipital nerve block is a useful diagnostic and treatment modality in the setting of postconcussive headaches.
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Southern medical journal · Jan 2004
Changes in transcutaneous carbon dioxide, oxygen saturation, and respiratory rate after interscalene block.
We used transcutaneous (TC) carbon dioxide (CO2) monitoring to prospectively evaluate changes in respiratory status after interscalene anesthesia in 45 adults (40 successful and 5 unsuccessful blocks). ⋯ After interscalene blockade, we found an increase in respiratory rate and hypercarbia that resulted in no clinically significant effect.