Gas exchange inefficiency and dynamic hyperinflation contributes to exercise limitation in chronic obstructive pulmonary disease (COPD). It is also characterized by an elevated fraction of physiological dead space (VD/VT). Noninvasive methods for accurate VD/VT assessment during patients are lacking. The current study sought compare transcutaneous PCO2 (TcPCO2) with the gold standard—arterial (...

SUMMARY The effect of fresh gas tlow on PaCo2, was studied on 15 children who given general anesthesia for surgery. Each patient was his/her own control Arterial blood samples were drawn to measure PaCo2. First sample was taken 15 minutes and the second sample 30 minutes after the patient was anesthetised. Gas flow increased by 500 ml, and the 3rd sample taken after 15 minutes. The mean PaCo2...

SUMMERY A controlled double -blind clinical trial was performed in 40 normal children, with no underlying pulmonary pathology, who underwent surgery. The objective was to study the effect of increase in the rate of respiration (RR) on PaCo2 in the anesthetized child . The RR of the control group (n=20) RR was set at 40/min. In the study patients (n=20) RR was set at 40/min. For the first 30 mi...

BACKGROUND In acute respiratory failure, arterial blood gas analysis (ABG) is used to diagnose hypercapnia. Once non-invasive ventilation (NIV) is initiated, ABG should at least be repeated within 1 h to assess PaCO2 response to treatment in order to help detect NIV failure. The main aim of this study was to assess whether measuring end-tidal CO2 (EtCO2) with a dedicated naso-buccal sensor duri...

To investigate the correlation and accuracy of transcutaneous carbon dioxide partial pressure (PTCCO2) with regard to arterial carbon dioxide partial pressure (PaCO2) in severe obese patients undergoing laparoscopic bariatric surgery. Twenty-one patients with BMI>35 kg/m(2) were enrolled in our study. Their PaCO2, end-tidal carbon dioxide partial pressure (PetCO2), as well as PTCCO2 values were...

OBJECTIVE To study the effect of step reduction of expired minute ventilation (MV) on PaCO2 in ventilated newborns and to determine whether MV within a defined range can predict PaCO2. DESIGN Prospective descriptive. SETTING Referral neonatal unit of a teaching hospital. METHODS Forty neonates stable on mechanical ventilation receiving minute ventilation in the range of 150-210 ml/kg/min....