Assessment of end-tidal carbon dioxide and vena cava collapsibility in volume responsiveness in spontaneously breathing patients

2020 ◽  
Author(s):  
S. Güney Pınar ◽  
M. Pekdemir ◽  
İ. U. Özturan ◽  
N. Ö. Doğan ◽  
E. Yaka ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Vena Cava ◽  
Volume Responsiveness ◽  
End Tidal Carbon Dioxide ◽  
End Tidal ◽  
Spontaneously Breathing

scholarly journals Changes in tracheal, oesophageal and rectal temperature over 60 minutes anaesthesia in non-heated dogs, spontaneously breathing or mechanically ventilated

2021 ◽  
Author(s):  
L Novak ◽  
J Burova ◽  
L Stankova ◽  
M Rado
Keyword(s):  
Carbon Dioxide ◽  
Heart Rate ◽  
Rectal Temperature ◽  
Carbon Dioxide Concentration ◽  
Body Temperatures ◽  
Mechanically Ventilated ◽  
End Tidal Carbon Dioxide ◽  
The Times ◽  
End Tidal ◽  
Spontaneously Breathing

The objective of this prospective randomised clinical study was to determine the differences in the tracheal, oesophageal and rectal temperature in spontaneously breathing or mechanically ventilated dogs. A total of thirty dogs were allocated to the SPO-group breathing spontaneously (n = 15) or the MEC-group ventilated mechanically (n = 15). Anaesthesia was established using a medetomidine-butorphanol-propofol-isoflurane combination. The tracheal (T-Tra), oesophageal (T-Oes), rectal (T-Rec), inspired gas (T-Gas), room (T-Room) temperatures, respiratory frequency (f<sub>R</sub>), heart rate (HR), mean arterial pressure (MAP) and end-tidal carbon dioxide concentration (ETCO<sub>2</sub>) were measured after connecting to a re-breathing system (baseline) and subsequently in 10-minute intervals for 60 minutes. The data were analysed using ANOVA and Steel-Dwass tests (P &lt; 0.05). In the SPO-group, the T-Tra, was significantly lower at T30, T40, T50, T60, the T-Oes and T-Rec at T40, T50, T60, compared to the baseline. In the MEC-group, the T-Tra and T-Oes was significantly lower at T30, T40<sub>,</sub> T50, T60, the T-Rec at T40, T50, T60, compared to the baseline. In the SPO-group, the f<sub>R</sub> was significantly lower for all the times and the ETCO<sub>2</sub> higher at T10, T20, T30, T40, T50 compared to the MEC-group. No other differences were detected. During anaesthesia, there is a comparable decrease in body temperatures, regardless of whether the dogs are breathing spontaneously or ventilated mechanically.

End-tidal carbon dioxide is better than arterial pressure for predicting volume responsiveness by the passive leg raising test

2012 ◽  
Vol 39 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Xavier Monnet ◽  
Aurélien Bataille ◽  
Eric Magalhaes ◽  
Jérôme Barrois ◽  
Marine Le Corre ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Arterial Pressure ◽  
Passive Leg Raising ◽  
Volume Responsiveness ◽  
End Tidal Carbon Dioxide ◽  
End Tidal ◽  
Better Than

Measurement of End-Tidal Carbon Dioxide in Spontaneously Breathing Children After Cardiac Surgery

2011 ◽  
Vol 20 (5) ◽  
pp. 388-394
Author(s):  
Carmen Caroline Rasera ◽  
Pedro Miguel Gewehr ◽  
Adriana Maria Trevisan Domingues ◽  
Fernando Faria Junior
Keyword(s):  
Carbon Dioxide ◽  
Cardiac Surgery ◽  
Blood Gas Analysis ◽  
Tracheal Extubation ◽  
Supplemental Oxygen ◽  
Pulmonary Complications ◽  
Gas Analysis ◽  
End Tidal Carbon Dioxide ◽  
End Tidal ◽  
Spontaneously Breathing

BackgroundRespiratory monitoring is important after surgery to prevent pulmonary complications. End-tidal carbon dioxide (Petco2) measurement by capnometry is an indirect and noninvasive measurement of Pco2 in blood and is accepted and recognized in critical care.ObjectivesTo determine the correlation and level of agreement between Petco2 and Paco2 in spontaneously breathing children after cardiac surgery and to determine whether Petco2 measured by using tidal volume (Vt-Petco2) or vital capacity (VC-Petco2) shows more or less significant correlation with Paco2.MethodsVt-Petco2 and VC-Petco2 by capnometry and Paco2 by blood gas analysis were measured once a day after tracheal extubation. The determination coefficient and degree of bias between the methods were assessed in children with and without supplemental oxygen.ResultsA total of 172 Vt-Petco2, VC-Petco2, and Paco2 values from 48 children were analyzed. The overall coefficients of determination were 0.84 (P &lt; .001) for Vt-Petco2 and Paco2 and 0.62 (P = .02) for VC-Petco2 and Paco2. The mean gradient for Paco2 to Petco2 in all groups increased with the increase in supplemental oxygen; the gradient was significantly larger in the groups given 2 to 5 L of oxygen per minute.ConclusionsIn spontaneously breathing children, Vt-Petco2 provided a more accurate estimate of Paco2 than did VC-Petco2, especially in children given little or no supplemental oxygen. The difference between the methods was significantly larger in the groups given 2 to 5 L of oxygen per minute.

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