• Best Pract Res Clin Anaesthesiol · Dec 2020

    Editorial Review

    New insights into the pathophysiology and risk factors for PONV.

    • Shea Stoops and Anthony Kovac.
    • Department of Anesthesiology, University of Kansas Medical Center, 3901 Rainbow Blvd., MS 1034, Kansas City, KS 66160, USA. Electronic address: sstoops@kumc.edu.
    • Best Pract Res Clin Anaesthesiol. 2020 Dec 1; 34 (4): 667-679.

    AbstractPostoperative nausea and vomiting (PONV) affects patient outcomes and satisfaction. New research has centered on evaluation of post-discharge and opioid-related nausea and vomiting. Mechanical and drug effects stimulate the release of central nervous system neurotransmitters acting at receptors in the vomiting center, area postrema, and nucleus of the solitary tract. Brain surgery has allowed insight into specific central emetogenic areas. Stimuli from peripheral organs act through afferent vagus neurons and a parasympathetic response causing nausea and vomiting. Opioids stimulate mu receptors in the chemoreceptor trigger zone and cholinergic receptors in the vestibular system. Opioids also affect gastrointestinal (GI) tract mechanics by decreasing gastric emptying, intestinal motility, GI peristalsis, and secretions. Regional blocks and non-opioid multimodal analgesia help to decrease nausea and vomiting. Patient, surgery, and anesthesia factors contribute to risk and degree of PONV experienced. Pharmacogenetics plays a role in gene typing as antiemetic medication metabolism results in varying drug effectiveness. Risk scoring systems are available. Individualized multimodal plans can be designed as part of an enhanced recovery after surgery protocol.Copyright © 2020 Elsevier Ltd. All rights reserved.

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