Improved accuracy of cardiac output estimation by the partial CO2 rebreathing method.
Objective: This study investigated the accuracy of the NICO monitor equipped with the newer software. Additionally, the effects of the increased dead space produced by the NICO monitor on ventilatory settings were investigated.Methods: Forty-two patients undergoing elective aortic reconstruction par...
| Publicado en: | Journal of Clinical Monitoring & Computing Vol. 23; no. 3; pp. 149 - 156 |
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| Autores principales: | , , , , , , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jun2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105540792&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105540792 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13871307 OHC jtl: Journal of Clinical Monitoring & Computing issn: 13871307 maglogo: N pubinfo: dt: Jun2009 vid: 23 iid: 3 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 105540792 40419299 NLM19301132 2010297707 10.1007/s10877-009-9172-1 NLM19301132 105540792 ppf: 149 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Improved accuracy of cardiac output estimation by the partial CO2 rebreathing method. aug: au: Kotake Y Yamada T Nagata H Suzuki T Serita R Katori N Takeda J Shimizu H Kotake, Yoshifumi Yamada, Takashige Nagata, Hiromasa Suzuki, Takeshi Serita, Ryohei Katori, Nobuyuki Takeda, Junzo Shimizu, Hideyuki affil: Department of Anesthesiology, Toho University, Ohta, Tokyo, Japan sug: subj: Capnography Equipment and Supplies Capnography Methods Carbon Dioxide Analysis Cardiac Output Diagnosis, Computer Assisted Equipment and Supplies Diagnosis, Computer Assisted Methods Software Aged Algorithms Equipment Design Equipment Failure Female Male Reproducibility of Results Sensitivity and Specificity Human Aged: 65+ years Female Male ab: Objective: This study investigated the accuracy of the NICO monitor equipped with the newer software. Additionally, the effects of the increased dead space produced by the NICO monitor on ventilatory settings were investigated.Methods: Forty-two patients undergoing elective aortic reconstruction participated in this prospective, observational study at a university hospital. Cardiac output was continuously monitored using both the NICO monitor and continuous cardiac output (CCO) measured by a pulmonary artery catheter. A NICO monitor equipped with ver. 4.2 software was used for the first 21 patients while a NICO monitor equipped with ver. 5.0 software was used for the rest of the patients. Cardiac output measured by bolus thermodilution (BCO) at 30 min intervals was used as a reference.Results: The bias +/- precision of the NICO monitor was 0.18 +/- 0.88 l/min with ver. 4.2 software (n = 182) and 0.18 +/- 0.83 l/min with 5.0 software (n = 194). The accuracy of the NICO monitor is comparable to CCO, whose bias +/- precision against BCO is 0.19 +/- 0.81 l/min (n = 376). At the same level of CO(2) production and minute ventilation, PaCO(2) was lower in the patients monitored by NICO with ver. 5.0 software than patients with ver. 4.2 software.Conclusions: This study demonstrated the improved performance of the NICO monitor with updated software. The performance of the NICO monitor with ver. 4.2 or later software is similar to CCO. However, the cardiac output measurement did not fulfill the criteria of interchangeability to the cardiac output measurement by bolus thermodilution. Updates to ver. 5.0 attenuated the effects of rebreathing introduced by the NICO monitor without compromising the accuracy of the cardiac output measurement. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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