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At least 127 records · Page 7Linked to original sources
PubMed1985

Reflex control of the gastric motility by the vagus and splanchnic nerves in the guinea pig in vivo.

Gastric responses to electrical stimulation of the vagus and splanchnic nerves and to esophageal distension were observed in studies of the reflex control of the gastric motility in anesthetized guinea pigs in vivo. The gastric motility was inhibited by both vago-vagal and splanchno-vagal reflexes through the activation of non-adrenergic inhibitory nerve fibers and by splanchno-splanchnic reflex through the inactivation of the intramural cholinergic excitatory neurons. Distension of the lower esophagus caused a relaxation of the stomach which was mediated by an intrinsic reflex via intramural non-adrenergic inhibitory neurons. Furthermore, stimulation of the splanchnic nerve innervating the stomach seems to activate adrenergic inhibitory, cholinergic excitatory and probably some non-adrenergic inhibitory fibers.

Adrenergic alpha-Antagonists↗
PubMed2004

Digital anesthesia with epinephrine: an old myth revisited.

BACKGROUND: The prohibition against the use epinephrine with local anesthetics for digital blocks or infiltrative anesthesia is an established dogma in dermatologic surgery. Major textbooks reinforce this teaching suggesting that there is substantial risk of digital gangrene caused by local anesthesia containing epinephrine. OBJECTIVE: To provide a comprehensive literature review of the cases of digital necrosis associated with the use of local anesthesia containing epinephrine. METHODS: A PubMed search of the National Library of Medicine database using the terms "lidocaine" and "epinephrine" and "finger" with no specified limits was performed. RESULTS: A total of 16 papers were referenced and only 6 papers dealt with digital anesthesia. A total of 50 cases of digital gangrene were reported, mostly in the early part of the 20th century. In 21 cases digital gangrene was associated with anesthetic mixed with epinephrine. Actual concentration of epinephrine was known in only 4 cases. Careful analysis of all cases of necrosis did not support epinephrine itself as a cause. Other contributing factors including older compounds (cocaine, eukaine, and procaine), non-standardized inaccurate methods of mixing epinephrine with lidocaine, inappropriate use of a tourniquet, postoperative hot soaks, infection, or large anesthetic volume were also present. None of the reported cases were associated with the use of a commercial lidocaine-epinephrine mixture. CONCLUSION: A literature review failed to provide evidence to support the dogma that block or infiltrative anesthesia with lidocaine and epinephrine produces digital necrosis. Proper injection technique and adequate selection of patients (absence of thrombotic, vasospastic conditions, or uncontrolled hypertension) are mandatory to minimize complications. The addition of epinephrine, in fact, reduces the need for the use of tourniquets and large volumes of anesthetic and provides better and longer pain control during digital procedures.

Anesthesia, Local↗