J J Kolkman, L J Zwaarekant, K Boshuizen, A B Groeneveld, S G Meuwissen
{"title":"体外评价气压法测定胃内PCO2的效果。","authors":"J J Kolkman, L J Zwaarekant, K Boshuizen, A B Groeneveld, S G Meuwissen","doi":"10.1023/a:1007335622132","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>To assess the in vitro performance of a new device, the Tonocap, for semi-continuous air tonometry of regional PCO2 in the gastrointestinal tract.</p><p><strong>Methods: </strong>The tonometer consists of an air filled balloon-tipped catheter, connected to a prototype Tonocap system. The tonometer was placed in saline baths at steady-state PCO2's ranging from 0 to 105 torr, to evaluate bias, precision and reproducibility to PCO2 measurements. The response time was defined as the time needed to detect 95% of an instantaneous change in bath PCO2.</p><p><strong>Results: </strong>The bias of the PCO2 measurement (mean +/- SD) was -2 +/- 2% and reproducibility (coefficient of variation) was 2 +/- 1%. The response time was 19 +/- 2 min.</p><p><strong>Conclusions: </strong>Tonocap air tonometry is simple and eliminates most sources of error associated with conventional saline tonometry. The bias, precision, reproducibility and response time in vitro are consistent with a clinically reliable device.</p>","PeriodicalId":77199,"journal":{"name":"Journal of clinical monitoring","volume":"13 2","pages":"115-9"},"PeriodicalIF":0.0000,"publicationDate":"1997-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1023/a:1007335622132","citationCount":"10","resultStr":"{\"title\":\"In vitro evaluation of intragastric PCO2 measurement by air tonometry.\",\"authors\":\"J J Kolkman, L J Zwaarekant, K Boshuizen, A B Groeneveld, S G Meuwissen\",\"doi\":\"10.1023/a:1007335622132\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>To assess the in vitro performance of a new device, the Tonocap, for semi-continuous air tonometry of regional PCO2 in the gastrointestinal tract.</p><p><strong>Methods: </strong>The tonometer consists of an air filled balloon-tipped catheter, connected to a prototype Tonocap system. The tonometer was placed in saline baths at steady-state PCO2's ranging from 0 to 105 torr, to evaluate bias, precision and reproducibility to PCO2 measurements. The response time was defined as the time needed to detect 95% of an instantaneous change in bath PCO2.</p><p><strong>Results: </strong>The bias of the PCO2 measurement (mean +/- SD) was -2 +/- 2% and reproducibility (coefficient of variation) was 2 +/- 1%. The response time was 19 +/- 2 min.</p><p><strong>Conclusions: </strong>Tonocap air tonometry is simple and eliminates most sources of error associated with conventional saline tonometry. The bias, precision, reproducibility and response time in vitro are consistent with a clinically reliable device.</p>\",\"PeriodicalId\":77199,\"journal\":{\"name\":\"Journal of clinical monitoring\",\"volume\":\"13 2\",\"pages\":\"115-9\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1997-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1023/a:1007335622132\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of clinical monitoring\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1023/a:1007335622132\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of clinical monitoring","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1023/a:1007335622132","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
In vitro evaluation of intragastric PCO2 measurement by air tonometry.
Objective: To assess the in vitro performance of a new device, the Tonocap, for semi-continuous air tonometry of regional PCO2 in the gastrointestinal tract.
Methods: The tonometer consists of an air filled balloon-tipped catheter, connected to a prototype Tonocap system. The tonometer was placed in saline baths at steady-state PCO2's ranging from 0 to 105 torr, to evaluate bias, precision and reproducibility to PCO2 measurements. The response time was defined as the time needed to detect 95% of an instantaneous change in bath PCO2.
Results: The bias of the PCO2 measurement (mean +/- SD) was -2 +/- 2% and reproducibility (coefficient of variation) was 2 +/- 1%. The response time was 19 +/- 2 min.
Conclusions: Tonocap air tonometry is simple and eliminates most sources of error associated with conventional saline tonometry. The bias, precision, reproducibility and response time in vitro are consistent with a clinically reliable device.
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