Evaluation of partial carbon dioxide rebreathing cardiac output measurement during thoracic surgery
| Autor: | Meng-Huat Goh, Ju-Mei Ng, Mark Yew-Hoong Chow, Pierre Christian Ip-Yam, Thirugnanam Agasthian |
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| Rok vydání: | 2006 |
| Předmět: |
Male
Cardiac output medicine.medical_specialty Supine position medicine.medical_treatment Thermodilution law.invention Cardiac output measurement law Monitoring Intraoperative medicine Lateral Decubitus Position Humans Thoracotomy Prospective Studies Cardiac Output Saline Aged business.industry Respiration Carbon Dioxide Middle Aged Respiration Artificial Anesthesiology and Pain Medicine Cardiothoracic surgery Anesthesia Ventilation (architecture) Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of cardiothoracic and vascular anesthesia. 21(5) |
| ISSN: | 1053-0770 |
| Popis: | Objective: Noninvasive partial CO2 rebreathing (NICO; Novametrix Medical Systems, Inc, Wallingford, CT) is a relatively new alternative to thermodilution (TDCO) for measurement of cardiac output. This study compares the 2 methods during thoracic surgery and one-lung ventilation. Design: A prospective, observational study. Setting: A tertiary hospital. Participants: Twelve adult patients undergoing elective thoracotomy and one-lung ventilation in the lateral decubitus position. Interventions: Paired measurements of cardiac output were performed during (1) 2-lung ventilation in the supine position (postinduction of anesthesia), (2) 10 minutes after initiation of one-lung ventilation in the lateral decubitus position with the nondependent chest open, and (3) after 30 minutes on one-lung ventilation. An average of 3 consecutive (10 mL 20°C saline) TDCO measurements made during end-expiration was compared with corresponding NICO measurements. Measurements and Main Results: The NICO showed a tendency to underestimate cardiac output compared with TDCO at all measurement times. Overall, bias was −0.29 L/min and limits of agreement −1.69 to 1.43 L/min. Conclusions: There was a moderate agreement between cardiac output measurements obtained with the NICO and TDCO. The present data suggest that the NICO technique may be useful during thoracic surgery. |
| Databáze: | OpenAIRE |
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