کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3008087 1181445 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of cardiac output changes on exhaled carbon dioxide in newborn piglets
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی کاردیولوژی و پزشکی قلب و عروق
پیش نمایش صفحه اول مقاله
Effect of cardiac output changes on exhaled carbon dioxide in newborn piglets
چکیده انگلیسی

IntroductionInternational neonatal resuscitation guidelines recommend that correct tube placement should be confirmed by clinical assessment and exhaled CO2 detection. Absence of exhaled CO2 after intubation suggests oesophageal intubation, non-aerated lungs, low tidal volume delivery, or low cardiac output. The relationship between changes in cardiac output and exhaled CO2 in neonates is unknown. The aim of the study was to determine if changes in cardiac output affect exhaled carbon dioxide in a porcine model of neonatal resuscitation.MethodTerm piglets (n = 5) aged 3–4 days were anesthetised, intubated, instrumented and exposed to normocapnic hypoxia. Exhaled CO2 was continuously measured using a flow sensor (Respironics NM3®). Pulmonary artery blood flow, a surrogate for cardiac output was measured using an ultrasonic flow probe (Transonic®). A semi-quantitative CO2-detector (Pedi-Cap®) was placed between the tracheal tube and flow sensor to assess colour change at changing levels of cardiac output.ResultsMedian (IQR) pulmonary artery blood flow significantly decreased from 177 (147–177) mL/kg/min at baseline to 4 (3–26) mL/kg/min during hypoxia (p = 0.02). Exhaled CO2 remained similar throughout the experiment, 47 (41–47) mmHg at baseline vs. 40 (38–41) mmHg at the end of the hypoxia (p = 1.00). Additionally, at each time point, colour change at the Pedi-Cap® was observed.ConclusionA significant decrease in cardiac output was not associated with changes in exhaled CO2 or failure to achieve a Pedi-Cap® colour change.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Resuscitation - Volume 84, Issue 10, October 2013, Pages 1439–1442
نویسندگان
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