Prediction of arterial from end-tidal P CO 2
نویسندگان
چکیده
منابع مشابه
Use of maximum end-tidal CO(2) values to improve end-tidal CO(2) monitoring accuracy.
BACKGROUND The arterial partial pressure of CO(2) (P(aCO(2))) can be grossly estimated by the end-tidal partial pressure of CO(2) (P(ETCO(2))). This principle is used in SmartCare (Dräger, Lübeck, Germany), which is an automated closed-loop system that uses P(ETCO(2)) to estimate alveolar ventilation during mechanical ventilation. OBJECTIVE To assess whether the maximum P(ETCO(2)) value (inst...
متن کاملEstimating alveolar dead space from the arterial to end-tidal CO(2) gradient: a modeling analysis.
UNLABELLED Using an original, validated, high-fidelity model of pulmonary physiology, we compared the arterial to end-tidal CO(2) gradient divided by the arterial CO(2) tension (Pa-E'CO(2)/PaCO(2)) with alveolar dead space expressed as a fraction of alveolar tidal volume, calculated in the conventional manner using Fowler's technique and the Bohr equation: (VDalv/VTalv)(Bohr-Fowler). We examine...
متن کاملDependence of the gradient between arterial and end-tidal P(CO(2)) on the fraction of inspired oxygen.
BACKGROUND End-tidal P(CO(2)) (Pe'(CO(2))) is routinely used in the clinical assessment of the adequacy of ventilation because it provides an estimate of Pa(CO(2)). How well Pe'(CO(2)) reflects Pa(CO(2)) depends on the gradient between them, expressed as ΔPa-e'(CO(2)). The major determinant of ΔPa-e'(CO(2)) is alveolar dead space (Vd(alv)). The fraction of inspired O(2) (Fi(O(2))) is not though...
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experimental investigation performed in dogs in vivo has found no beneficial effect with paneuronium on pulmonary resistance, 6 contrary to what was expected by Kuwahara and Goresky from pancuronium sympathomimetic properties. Moreover, low doses of pancuronium increased pulmonary resistance (likely by blocking prejunctional M2-muscarinic receptors) whereas vecuronium was devoid of this side ef...
متن کاملcorrelation of end-tidal carbon dioxide with arterial carbon dioxide in mechanically ventilated patients
background: patients undergone mechanical ventilation need rapid and reliable evaluation of their respiratory status. monitoring of end-tidal carbon dioxide (etco2) as a surrogate, noninvasive measurement of arterial carbon dioxide (paco2) is one of the methods used for this purpose in intubated patients. objectives: the aim of the present trial was to study the relationship between end-tidal c...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1994
ISSN: 0007-0912
DOI: 10.1093/bja/72.4.498-a