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1.
Int. j. morphol ; 28(3): 681-684, Sept. 2010. ilus
Artículo en Inglés | LILACS | ID: lil-577171

RESUMEN

Abductor pollicis brevis muscle (APB) belongs to the foreground of the subfascial muscle thenar region, which is of great importance in the movement of the thumb on its two-joint arrangement. In this article, we report the presence of a superficial portion of the APB muscle and its relationship and discuss the available literature and the clinical implications of the presence of this variation.


El músculo abductor corto del pulgar (ACP) pertenece al primer plano muscular subfascial de la región tenar de gran importancia en los movimientos del pulgar por su disposición biarticular. En el presente artículo reportamos la presencia de un fascículo superficial del músculo ACP y sus relaciones, se analiza la literatura disponible y se discuten las implicancias clínicas de la presencia de esta variación.


Asunto(s)
Humanos , Masculino , Músculo Esquelético/anatomía & histología , Músculo Esquelético/anomalías , Pulgar/anatomía & histología , Pulgar/anomalías , Cadáver
2.
Fudan University Journal of Medical Sciences ; (6): 172-175, 2010.
Artículo en Chino | WPRIM | ID: wpr-403403

RESUMEN

Objective To compare the influence of different end-tidal concentrations of sevoflurane on transcranial electrical four-limb muscle motor evoked potential (MEP) monitoring. Methods Twenty ASA Ⅰ-Ⅱpatients aged 23-62 years undergoing craniotomy were enrolled. Triangular muscle, biceps brachii muscle, triceps brachii muscle, brachioradialis muscle, extensor digitorum communis muscle, abductor pollicis brevis abductor digiti minimi muscle, rectus femoris muscle, tibialis anterior muscle, gastrocnemius muscle and abductor hallucis were selected for MEPs recording. Sevoflurane was introduced at 0.5, 0.75, 1.0 and then 1.3 MAC (15 min each), and the effects on MEPs were studied. Results ①Maximum MEP amplitude was observed at abductor pollicis brevis muscle in upper limb and abductor hallucis muscle in lower limb at baseline and 0.5 MAC. Up to 1.0 MAC, there was no significant difference in MEP amplitude among extensor digitorum communis muscle, abductor pollicis brevis and abductor digiti minimi muscle. ②The success rate of MEP recording from abductor pollicis brevis muscle and abductor hallucis muscle was 100% during the administration of 0.5-1.0 MAC sevoflurane. ③The MEP amplitude was decreased and the latency was increased in a sevoflurane dose-dependent manner. Conclusions Abductor pollicis brevis muscle and abductor hallucis muscle were suitable for MEP monitoring during the administration of 0.5-1.0 MAC sevoflurane.

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