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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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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Anesteziol Reanimatol · Jan 2004
[Regional anesthesia of the sciatic nerve with anterior approach in children: new landmarks].
The purpose of the case study was to evaluate new landmarks for the needle insertion in sciatic nerve block made through the anterior approach. We identified, by X-Ray, new simplified bone landmarks and suggested that the skin should be marked in order to find the puncture site. ⋯ The former ensures the regional anesthesia of the lower limbs in all trauma cases; besides, it cuts the block implementation time. The rate of complications and the duration of postoperative analgesia are not dependent on a selected approach.