A bizarre endtidal carbon dioxide waveform

Failure of endtidal carbon dioxide to confirm tracheal intubation in a neonate with a single ventricle and severe pulmonary stenosis.

On the day of surgery, heart rate (HR) was 139 bpm, noninvasive blood pressure (BP) 93/31 mmHg, SpO2 81% on room air, and temperature 36.5° C. Patient was preoxygenated with 100% O2, which increased SpO2 to 99%. Anesthesia was induced by face mask with sevoflurane in oxygen with gradual increase in concentration to 6%. Immediately after venous access was obtained, propofol 2 mg/kg-1 was adminis...

Carbon dioxide tolerance: a review.

Aversiveness of carbon dioxide.

Carbon dioxide can produce aversive stimulation of the upper airways, and in their recent review Conlee et al. (2005) emphasized: ‘y Leach et al. (2002) concluded that CO2, either alone or in combination with argon, cannot be used humanely at any concentration and is therefore unacceptable as a euthanasia agent for laboratory rodents, particularly when more humane methods exist. The findings of...

Aversiveness of carbon dioxide.

We are grateful to Dr Ronald Wood for providing in his letter in the July issue (Wood 2005) his expert views and methodologies that could potentially be used in future to test the behavioural effects of airborne contaminants and irritants. Dr Wood seems to accept in his letter that carbon dioxide is aversive but he is unsure how aversive, and believes that it can be safely and humanely used in ...

Carbon dioxide - induced

Cockroaches (Periplaneta americana) learned to passively avoid electric shock in a two-compartment box after a single training trial. However, Ss exposed to CO2 gas immediately after the training trial failed to show retention of the previous experience when tested 24 h later. Results obtained are consistent with those observed in studies of retrograde amnesia in vertebrates. Article: Numerous ...