Objective: To test the hypothesis that end-tidal CO2(PETCO2) varies with tidal volume (Vt) in preterm infants. Design: Intervention study, nonrandomized tr... KJ Greer,WA Bowen,AN Krauss - 《Am J Perinatol》 被引量: 16发表: 2003年 Ventilatory response to CO2 after brief stimulations of...
Continuous physiologic monitoring included oxygen saturation, end-tidal CO2, inspired CO2, electrocardiogram, rectal core temperature, and respiratory rate. As controls, 5 of the 8 subjects repeated the study protocol breathing directly into a small, fist-sized air pocket with no CO2 removal device....
59] as follows: the BOLD data were first motion corrected and smoothed by an 8-mm Gaussian kernel using SPM12. The end-tidal CO2(Et-CO2) was extracted from the CO2trace using an algorithm to identify the peak CO2of each exhaled breath and then the resulting Et-CO2curve was temporally al...
ETCO2 : End-tidal CO2 concentration FACO2 : The alveolar CO2 fraction at end of expiration FiO2 : Inspired oxygen fraction He: Helium HU: Hounsfield Unit LCI: Lung clearance index PEEP: Positive end-expiratory pressure Qc : Effective pulmonary blood flow VTCO2 : Volume of CO2 eli...
What is the normal range for the V/Q ratio? If atmospheric pressure is 760 mmHg and pressure in the alveolar air is 758 mmHg: a. it is the end of normal expiration and there is no airflow. b. the volume of the chest cavity is at i...
(1–5%) with a tidal volume of 10–15 mL/kg to maintain a surgical plane of anesthesia. Blood oxygen saturation (SPO2), end-tidal carbon dioxide (ETCO2), ECG and body temperature were monitored during all GA procedures and all animals received an IM injection of ceftiofur antibiotic and ...
a. Tidal volume b. Residual volume c. Vital capacity d. Total lung capacity e. Expiratory reserve Fill in the blanks. Usually, the atrial rate is constant between ___ and ___ beats per minute while the ventricular rate is in the ...
\Ye provided pulmo- nary ventilation using the pressure control mode (Servo 900 C) at a tidal volume of 20 mI,/kg multiplied by the fraction of the remaining lungs, a respiratory rate up to 120/min, a peak inspiratory pressure of 12-15 cm I 120, and a positive end-espiratory ...
RESULTS The median [range] body weight at scan for the different postnatal age groups was as follows: 1 wk old ϭ 3.35 kg [2.3– 4.4 kg] (n ϭ 2); 1 mo old ϭ 6.85 kg [5.2–9.4 kg] (n ϭ 4); 2 mo old ϭ 12.6 kg [10 –14.8 kg] (n ϭ 3); and 3 mo old ...
During exercise, pulmonary ventilation increased to 33 (28-40) L min-1 (median with range) with no effect of a moderate breathing resistance (reduction of the pneumotach diameter from 30 to 14 and 10 mm). The end-tidal CO2 pressure (PETCO2) increased from 45 (42-48) to 48 (46-58)...