Anesthesia and analgesia
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Anesthesia and analgesia · May 2017
Observational StudyTotal Spinal Anesthesia Failure: Have You Assessed the Sensory Anesthesia in Sacral Dermatomes?
Intrathecal local anesthetic maldistribution is a well-known cause of spinal anesthesia failure (SAF). This could potentially result in sensory blockade restricted to the sacral dermatomes. ⋯ Of the 72 presumed total failures based on the initial assessment, evaluation of the sacral dermatomes revealed sensory blockade in 32 (44%; 95% confidence interval, 32.7%-56.6%). Sacral dermatome assessment after SAF may be important in safely guiding subsequent anesthetic management.
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Anesthesia and analgesia · May 2017
A High Preoperative Pain and Symptom Profile Predicts Worse Pain Outcomes for Children After Spine Fusion Surgery.
Preoperative pain predicts persistent pain after spine fusion, yet little is understood about the nature of that pain, related symptoms, and how these symptoms relate to postoperative pain outcomes. This prospective study examined children's baseline pain and symptom profiles and the association between a high symptom profile and postoperative outcomes. ⋯ A behavioral pain vulnerable profile was present preoperatively in 30% of children with idiopathic scoliosis and was independently associated with poorer and potentially long-lasting pain outcomes after spine fusion in this setting. This high symptom profile is similar to that described in children and adults with chronic and centralized pain disorders and was more prevalent in girls and those with long-standing pain. Further study is needed to elucidate the potential mechanisms behind our observations.
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Anesthesia and analgesia · May 2017
Observational StudyIntermediate-Acting Nondepolarizing Neuromuscular Blocking Agents and Risk of Postoperative 30-Day Morbidity and Mortality, and Long-term Survival.
Nondepolarizing neuromuscular blocking drugs (NNMBDs) are commonly used as an adjunct to general anesthesia. Residual blockade is common, but its potential adverse effects are incompletely known. This study was designed to assess the association between NNMBD use with or without neostigmine reversal and postoperative morbidity and mortality. ⋯ The use of NNMBDs without neostigmine reversal was associated with increased odds of our composite respiratory outcome compared with patients reversed with neostigmine. Based on these data, we conclude that reversal of NNMBDs should become a standard practice if extubation is planned.
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Anesthesia and analgesia · May 2017
A Role for Adrenergic Receptors in the Uterotonic Effects of Ergometrine in Isolated Human Term Nonlaboring Myometrium.
Ergometrine is a uterotonic agent that is recommended in the prevention and management of postpartum hemorrhage. Despite its long-standing use, the mechanism by which it acts in humans has never been elucidated fully. The objective of this study was to investigate the role of adrenoreceptors in ergometrine's mechanism of action in human myometrium. The study examined the hypothesis that α-adrenoreceptor antagonism would result in the reversal of the uterotonic effects of ergometrine. ⋯ These results provide novel evidence for a role for α-adrenergic signaling mechanisms in the action of ergometrine on human myometrial smooth muscle in the in vitro setting. Information that sheds light on the mechanism of action of ergometrine may have implications for the development of further uterotonic agents.