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| | * https://pubmed.ncbi.nlm.nih.gov/26976237/ | | * https://pubmed.ncbi.nlm.nih.gov/26976237/ |
| | * From a [https://aeitechnologies.com/wp-content/uploads/2022/12/MOXUS-CARDIAC-OUTPUT-Option.pdf white paper] about the Moxus metabolic cart cardiac output estimation methods: | | * From a [https://aeitechnologies.com/wp-content/uploads/2022/12/MOXUS-CARDIAC-OUTPUT-Option.pdf white paper] about the Moxus metabolic cart cardiac output estimation methods: |
| − | ** CO2 rebreathing Fick method. Q = VCO2 * (CaCO2 - CvCO2) | + | ** CO2 rebreathing Fick method. Q = VCO2 / (CaCO2 - CvCO2) |
| | ** VCO2 is "easily measured"... how? | | ** VCO2 is "easily measured"... how? |
| | ** CaCO2 is estimated with EtCO2 if the subject has healthy lungs and the EtCO2 is peaking, otherwise PaCO2 from an ABG can be used | | ** CaCO2 is estimated with EtCO2 if the subject has healthy lungs and the EtCO2 is peaking, otherwise PaCO2 from an ABG can be used |
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| | ** Rebreathing bag volume should be 1.5x the tidal volume. | | ** Rebreathing bag volume should be 1.5x the tidal volume. |
| | ** Calibrate the best guess of CvCO2 by using the EtCO2 and adding 4-6 mmHg | | ** Calibrate the best guess of CvCO2 by using the EtCO2 and adding 4-6 mmHg |
| − | * [https://www.clinicalkey.com/#!/content/playContent/1-s2.0-S0749070409001274?returnurl=https:%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0749070409001274%3Fshowall%3Dtrue&referrer=https:%2F%2Fpubmed.ncbi.nlm.nih.gov%2F A paper] from 2010 showing a Fick rebreathing technique continuous CO monitor applied to both ICU and OR environments. | + | * [https://www.clinicalkey.com/#!/content/playContent/1-s2.0-S0749070409001274?returnurl=https:%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0749070409001274%3Fshowall%3Dtrue&referrer=https:%2F%2Fpubmed.ncbi.nlm.nih.gov%2F A paper] from 2010 showing continuous CO monitor applied to both ICU and OR environments using a Fick rebreathing technique. |
| | + | ** CO2 production is calculated as the product of CO2 concentration and air flow during a breathing cycle and CaCO2 content is derived from EtCO2 and the CO2 dissociation curve. |
| | + | |
| | + | * [https://ovidsp-dc2-ovid-com.liboff.ohsu.edu/ovid-new-b/ovidweb.cgi?&S=GCKOFPCDEIEBGKEKJPIJJEIHPOGCAA00&Complete+Reference=S.projects.17%7c23%7c1 Older paper] stating that changes in O2 consumption trends can be useful in diagnosing MH. |