Capnografia volumétrica como auxílio diagnóstico não-invasivo no tromboembolismo pulmonar agudo

Moreira, Marcos Mello; Terzi, Renato Giuseppe Giovanni; Pereira, Mônica Corso; Grangeia, Tiago De Araujo Guerra; Paschoal, Ilma Aparecida

doi:10.1590/s1806-37132008000500013

Cited by 7 publications

(1 citation statement)

References 8 publications

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“…Examples of assessment of pulmonary gas exchange (capnographic and blood gas analysis) are found in experimental [ 13 , 14 ] and clinical trials [ 15 , 16 ] of pulmonary thromboembolism, as well as in clinical [ 17 - 19 ] and experimental [ 20 , 21 ] studies on acute respiratory distress syndrome (ARDS) and bronchopleural fistula [ 22 , 23 ] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of the Atraumatic Endotracheal Tube in the Pulmonary-Gas Exchange: an Experimental Study

Antonelli¹,

Moreira²,

Martins³

et al. 2015

Revista Brasileira De Cirurgia Cardiovascular

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OBJECTIVEMechanical ventilation is frequently necessary, in which case the use of an endotracheal tube is mandatory. The tube has an inflatable balloon in its distal extremity, whose aim is, among other functions, an efficient arterialization. However, serious injuries in the place of contact of the balloon with the trachea can be frequent. Some studies point out that balloons with permanent pressure may reduce this complication. Nevertheless, air scape, expressed by the inspiratory (IV) and expiratory volume (EV) variation (Δ IV-EV), may occur, possibly leading to hypoxemia. Thus, the goal of this study was to verify the efficiency of a modified endotracheal tube on arterializations compared to the traditional endotracheal tube.METHODSThe modified endotracheal tube presents intermittent insufflation, with three drillings in the internal region of the cuff, allowing for insufflation in the inspiratory phase of the mechanical ventilation. Three animals were used for the control group, with a cuff pressure of 30 cmH2O, and seven pigs had the modified endotracheal tube. Each animal was kept under mechanical ventilation (FIO2=0.21) for 6 hours. Arterial and venous gases were measured every three hours (T0; T3; T6).RESULTSThe gases confirmed the lack of hypoxia between the Groups, with a difference in the ΔIV-EV at T0 (P=0.0486).CONCLUSIONSIn this study, the lack of hypoxia showed the efficiency of the modified endotracheal tube. However, new studies are necessary, particularly in diseased lungs, in order to evaluate the real efficiency of the mentioned device on the pulmonary gas exchange.

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Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of the Atraumatic Endotracheal Tube in the Pulmonary-Gas Exchange: an Experimental Study

Antonelli¹,

Moreira²,

Martins³

et al. 2015

Revista Brasileira De Cirurgia Cardiovascular

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The Ability of Volumetric Capnography to Distinguish between Chronic Obstructive Pulmonary Disease Patients and Normal Subjects

Yang

et al. 2014

Lung

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Respiratory evaluation through volumetric capnography among grade III obese and eutrophic individuals: a comparative study

et al. 2019

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BACKGROUND: Excess trunk body fat in obese individuals influences respiratory physiological function. The aims of this study were to compare volumetric capnography findings (VCap) between severely obese patients and normal-weight subjects and to assess whether there is any association between neck circumference (NC), waist-hip ratio (WHR) and VCap among grade III obese individuals. DESIGN AND SETTING: Analytical observational case-matched cross-sectional study, University of Campinas. METHODS: This cross-sectional study compared VCap variables between 60 stage III obese patients and 60 normal-weight individuals. RESULTS: In comparison with the normal-weight group, obese patients presented higher alveolar minute volume (8.92 ± 4.94 versus 6.09 ± 2.2; P = < 0.0001), CO 2 production (278 ± 91.0 versus 209 ± 60.23; P < 0.0001), expiratory tidal volume (807 ± 365 versus 624 ± 202; P = 0.005), CO 2 production per breath (21.1 ± 9.7 versus 16.7 ± 6.16; P = 0.010) and peak expiratory flow (30.9 ± 11.9 versus 25.5 ± 9.13; P = 0.004). The end-expiratory CO 2 (PetCO 2 ) concentration (33.5 ± 4.88 versus 35.9 ± 3.79; P = 0.013) and the phase 3 slope were normalized according to expired tidal volume (0.02 ± 0.05 versus 0.03 ± 0.01; P = 0.049) were lower in the obese group. CONCLUSIONS: The greater the NC was, the larger were the alveolar minute volume, anatomical dead space, CO 2 production per minute and per breath and expiratory volume; whereas the smaller were the phase 2 slope (P2Slp), phase 3 slope (P3Slp) and pressure drop in the mouth during inspiration.

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Capnografia volumétrica como auxílio diagnóstico não-invasivo no tromboembolismo pulmonar agudo

Cited by 7 publications

References 8 publications

Evaluation of the Efficiency of the Atraumatic Endotracheal Tube in the Pulmonary-Gas Exchange: an Experimental Study

Evaluation of the Efficiency of the Atraumatic Endotracheal Tube in the Pulmonary-Gas Exchange: an Experimental Study

The Ability of Volumetric Capnography to Distinguish between Chronic Obstructive Pulmonary Disease Patients and Normal Subjects

Respiratory evaluation through volumetric capnography among grade III obese and eutrophic individuals: a comparative study

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