Machine learning prediction of emesis and gastrointestinal state in ferrets

Autoři: Ameya C. Nanivadekar aff001;  Derek M. Miller aff002;  Stephanie Fulton aff003;  Liane Wong aff004;  John Ogren aff004;  Girish Chitnis aff004;  Bryan McLaughlin aff004;  Shuyan Zhai aff003;  Lee E. Fisher aff001;  Bill J. Yates aff002;  Charles C. Horn aff003
Působiště autorů: Dept. Bioengineering, Swanson School of Engineering, Univ. Pittsburgh, Pittsburgh, PA, United States of America aff001;  Dept. Otolaryngology, Univ. Pittsburgh School of Medicine, Pittsburgh, PA, United States of America aff002;  UPMC Hillman Cancer Center, Univ. Pittsburgh School of Medicine, Pittsburgh, PA, United States of America aff003;  Micro-Leads Inc., Somerville, MA, United States of America aff004;  Dept. Physical Medicine and Rehabilitation, Univ. Pittsburgh School of Medicine, Pittsburgh, PA, United States of America aff005;  Dept. Neuroscience, Univ. Pittsburgh, PA, United States of America aff006;  Center for Neuroscience, Univ. Pittsburgh, Pittsburgh, PA, United States of America aff007;  Dept. Medicine, Univ. Pittsburgh School of Medicine, Pittsburgh, PA, United States of America aff008;  Dept. Anesthesiology, Univ. Pittsburgh School of Medicine, Pittsburgh, PA, United States of America aff009
Vyšlo v časopise: PLoS ONE 14(10)
Kategorie: Research Article


Although electrogastrography (EGG) could be a critical tool in the diagnosis of patients with gastrointestinal (GI) disease, it remains under-utilized. The lack of spatial and temporal resolution using current EGG methods presents a significant roadblock to more widespread usage. Human and preclinical studies have shown that GI myoelectric electrodes can record signals containing significantly more information than can be derived from abdominal surface electrodes. The current study sought to assess the efficacy of multi-electrode arrays, surgically implanted on the serosal surface of the GI tract, from gastric fundus-to-duodenum, in recording myoelectric signals. It also examines the potential for machine learning algorithms to predict functional states, such as retching and emesis, from GI signal features. Studies were performed using ferrets, a gold standard model for emesis testing. Our results include simultaneous recordings from up to six GI recording sites in both anesthetized and chronically implanted free-moving ferrets. Testing conditions to produce different gastric states included gastric distension, intragastric infusion of emetine (a prototypical emetic agent), and feeding. Despite the observed variability in GI signals, machine learning algorithms, including k-nearest neighbors and support vector machines, were able to detect the state of the stomach with high overall accuracy (>75%). The present study is the first demonstration of machine learning algorithms to detect the physiological state of the stomach and onset of retching, which could provide a methodology to diagnose GI diseases and symptoms such as nausea and vomiting.

Klíčová slova:

Electrode recording – Ferrets – Functional electrical stimulation – Machine learning algorithms – Medical implants – Stomach – Surgical and invasive medical procedures – Vomiting


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2019 Číslo 10
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