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Correlation of end-tidal carbon dioxide with arterial carbon dioxide among patients in neurosurgical intensive care unit / 中华创伤杂志
Chinese Journal of Trauma ; (12): 814-819, 2015.
Article em Zh | WPRIM | ID: wpr-482802
Biblioteca responsável: WPRO
ABSTRACT
Objective To examine the correlation between end-tidal carbon dioxide (PetCO2) and arterial CO2 (PaCO2) among patients admitted in neurosurgical intensive care unit (NICU) and the factors affecting the PaCO2-PetCO2 [P (a-et) CO2].Methods Thirty-two intubated or cut-trachea patients who presented in the NICU were enrolled.Arterial blood gas test was done at seven every morning,and values of PetCO2 were compared with simultaneously recorded PaCO2.The normal gap of P (a-et) CO2 was defined as-5 mmHg to 5 mmHg.Concordance between PaCO2 and PetCO2 was analyzed using the Bland-Altman plot.Parameters between the normal and high P(a-et) CO2 groups were compared to identify the factors affecting the P(a-et) CO2,including Glasgow Coma Scale(GCS),blood pressure (BP),heart rate (HR),respiration rate (RR),body temperature (BT),and pulse oxygen saturation (SpO2).Results Allvalues of PaCO2 and PetCO2 were in accordance with normal distribution (r =0.668,P < 0.01) and concordance between PaCO2 and PetCO2 was 69.8%.Patients who had high P(aet) CO2 showed lower initial GCS,lower instant GCS,BT,as well as pH and higher actual bicarbonate (AB) and PetCO2 than the patients with normal P (a-et) CO2.Correlation between PaCO2 and PetCO2 rapidly declined when positive end expiratory pressure(PEEP) was greater than 5 mmH2O(r =0.229,P < 0.01).Conclusions PetCO2 correlates well with PaCO2 and appears to be a useful monitor of respiratory function of the patients consecutively.Initial GCS,BT,AB and PEEP have an impact on P(a-et) CO2,so those factors should be considered when attempting to monitor the hyperventilation with PetCO2.
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Texto completo: 1 Índice: WPRIM Tipo de estudo: Prognostic_studies Idioma: Zh Revista: Chinese Journal of Trauma Ano de publicação: 2015 Tipo de documento: Article
Texto completo: 1 Índice: WPRIM Tipo de estudo: Prognostic_studies Idioma: Zh Revista: Chinese Journal of Trauma Ano de publicação: 2015 Tipo de documento: Article