{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T09:16:42Z","timestamp":1784971002627,"version":"3.55.0"},"reference-count":27,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,12,21]],"date-time":"2023-12-21T00:00:00Z","timestamp":1703116800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Background: The SmartPill, a multisensor ingestible capsule, is marketed for intestinal motility disorders. It includes a pressure sensor, which could be used to study intra-abdominal pressure (IAP) variations. However, the validation data are lacking for this use. Material and Methods: An experimental study was conducted on anesthetized pigs with stepwise variations of IAP (from 0 to 15 mmHg by 3 mmHg steps) generated by laparoscopic insufflation. A SmartPill, inserted by endoscopy, provided intragastric pressure data. These data were compensated to take into account the intrabdominal temperature. They were compared to the pressure recorded by intragastric (IG) and intraperitoneal (IP) wired sensors by statistical Spearman and Bland\u2013Altmann analysis. Results: More than 4500 pressure values for each sensor were generated on two animals. The IG pressure values obtained with the SmartPill were correlated with the IG pressure values obtained with the wired sensor (respectively, Spearman \u03c1 coefficients 0.90 \u00b1 0.08 and 0.72 \u00b1 0.25; bias of \u221228 \u00b1 \u22120.3 mmHg and \u221229.2 \u00b1 0.5 mmHg for pigs 1 and 2). The intragastric SmartPill values were also correlated with the IAP measured intra-peritoneally (respectively, Spearman \u03c1 coefficients 0.49 \u00b1 0.18 and 0.57 \u00b1 0.30; bias of \u221229 \u00b1 1 mmHg and \u221231 \u00b1 0.7 mmHg for pigs 1 and 2). Conclusions: The SmartPill is a wireless and painless sensor that appears to correctly monitor IAP variations.<\/jats:p>","DOI":"10.3390\/s24010054","type":"journal-article","created":{"date-parts":[[2023,12,21]],"date-time":"2023-12-21T08:16:02Z","timestamp":1703146562000},"page":"54","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Assessment of the Smartpill, a Wireless Sensor, as a Measurement Tool for Intra-Abdominal Pressure (IAP)"],"prefix":"10.3390","volume":"24","author":[{"given":"Andr\u00e9a","family":"Soucasse","sequence":"first","affiliation":[{"name":"IFSTTAR, Universit\u00e9 Gustave Eiffel, Aix-Marseille Universit\u00e9, Laboratoire de Biom\u00e9canique Appliqu\u00e9e, Facult\u00e9 de M\u00e9decine, Campus Nord, Boulevard Pierre Dramard, CEDEX 20, 13916 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arthur","family":"Jourdan","sequence":"additional","affiliation":[{"name":"IFSTTAR, Universit\u00e9 Gustave Eiffel, Aix-Marseille Universit\u00e9, Laboratoire de Biom\u00e9canique Appliqu\u00e9e, Facult\u00e9 de M\u00e9decine, Campus Nord, Boulevard Pierre Dramard, CEDEX 20, 13916 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lauriane","family":"Edin","sequence":"additional","affiliation":[{"name":"IFSTTAR, Universit\u00e9 Gustave Eiffel, Aix-Marseille Universit\u00e9, Laboratoire de Biom\u00e9canique Appliqu\u00e9e, Facult\u00e9 de M\u00e9decine, Campus Nord, Boulevard Pierre Dramard, CEDEX 20, 13916 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elise","family":"Meunier","sequence":"additional","affiliation":[{"name":"Assistance Publique des H\u00f4pitaux de Marseille (APHM), Aix-Marseille Universit\u00e9, H\u00f4pital Nord, Service de Gastro-Ent\u00e9rologie, Chemin des Bourrely, 13015 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0775-3035","authenticated-orcid":false,"given":"Thierry","family":"Bege","sequence":"additional","affiliation":[{"name":"IFSTTAR, Universit\u00e9 Gustave Eiffel, Aix-Marseille Universit\u00e9, Laboratoire de Biom\u00e9canique Appliqu\u00e9e, Facult\u00e9 de M\u00e9decine, Campus Nord, Boulevard Pierre Dramard, CEDEX 20, 13916 Marseille, France"},{"name":"Assistance Publique des H\u00f4pitaux de Marseille (APHM), Aix-Marseille Universit\u00e9, H\u00f4pital Nord, Service de Chirurgie G\u00e9n\u00e9rale, Chemin des Bourrely, 13015 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catherine","family":"Masson","sequence":"additional","affiliation":[{"name":"IFSTTAR, Universit\u00e9 Gustave Eiffel, Aix-Marseille Universit\u00e9, Laboratoire de Biom\u00e9canique Appliqu\u00e9e, Facult\u00e9 de M\u00e9decine, Campus Nord, Boulevard Pierre Dramard, CEDEX 20, 13916 Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1190","DOI":"10.1007\/s00134-013-2906-z","article-title":"Intra-abdominal hypertension and the abdominal compartment syndrome: Updated consensus definitions and clinical practice guidelines from the World Society of the Abdominal Compartment Syndrome","volume":"39","author":"Kirkpatrick","year":"2013","journal-title":"Intensive Care Med."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"822","DOI":"10.1007\/s00134-004-2169-9","article-title":"Prevalence of intra-abdominal hypertension in critically ill patients: A multicentre epidemiological study","volume":"30","author":"Malbrain","year":"2004","journal-title":"Intensive Care Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1097\/01.ccx.0000155355.86241.1b","article-title":"Intra-abdominal hypertension in the critically ill: It is time to pay attention","volume":"11","author":"Malbrain","year":"2005","journal-title":"Curr. 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