Chest compressions during ventilation in out-of-hospital cardiac arrest cause reversed airflow
| العنوان: | Chest compressions during ventilation in out-of-hospital cardiac arrest cause reversed airflow |
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| المؤلفون: | Said Hachimi-Idrissi, Christophe Duchatelet, Koenraad G. Monsieurs, Alain Kalmar |
| المساهمون: | Emergency Medicine, Supporting clinical sciences, Research Group Critical Care and Cerebral Resuscitation |
| المصدر: | Resuscitation |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Male, Resuscitation, Heart Massage/methods, medicine.medical_treatment, Airflow, Respiration, Artificial/methods, Heart Massage, 030204 cardiovascular system & hematology, Emergency Nursing, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, Intubation, Intratracheal, Pressure, Medicine, Humans, Cardiopulmonary resuscitation, Lead (electronics), Tidal volume, Airway Resistance/physiology, Out-of-Hospital Cardiac Arrest/physiopathology, Pulmonary Ventilation/physiology, business.industry, Airway Resistance, Basic life support, 030208 emergency & critical care medicine, Respiration, Artificial, Cardiopulmonary Resuscitation, Trachea/physiopathology, Trachea, Anesthesia, Ventilation (architecture), Emergency Medicine, Female, Human medicine, Cardiopulmonary Resuscitation/methods, Cardiology and Cardiovascular Medicine, business, Pulmonary Ventilation, Respiratory minute volume, Out-of-Hospital Cardiac Arrest |
| الوصف: | Aim During cardiopulmonary resuscitation, once the patient is intubated, compressions and ventilations are performed simultaneously. Chest compressions during the inspiratory phase of ventilation may force air out of the lungs, causing so-called “reversed airflow”, which may lead to ineffective ventilation. The purpose of this study is to determine the occurrence of this phenomenon and to quantify the volume of reversed airflow. Methods Observational study. During manual ventilation of intubated patients receiving chest compressions, the pressure gradient over the endotracheal tube was measured using two air-filled catheters connected to a custom-made portable device. Chest compression data were measured using an accelerometer on a Zoll E- series defibrillator. All data are reported as mean (standard deviation; range). Results Twenty-five patients and a total of 368 ventilations were studied, on average 15 (6; 10–30) per patient. The mean tidal volume, minute volume and ventilation rate were respectively 690 ml (160; 240–1260), 10.5 l/min (4.8; 4.4–22.1) and 18/min (6; 6–35). Reversed airflow was observed in 21/25 patients (84%) and in 65% of all ventilations, with on average two episodes per ventilation. Fifty-five percent of the chest compressions during the inspiratory phase of the ventilation generated reversed airflow. The mean volume of the reversed airflow was 96 ml per episode (52; 12–364). Conclusion Chest compressions during ventilation in intubated patients generated reversed airflow in most patients. There was wide variation in the number of episodes and volume of the reversed airflow between patients. The effect of this phenomenon on the efficacy of ventilation during resuscitation and on outcome needs further investigation. |
| وصف الملف: | |
| تدمد: | 1873-1570 0300-9572 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a98b2a6d2371e91b3204bff28bddb11 https://pubmed.ncbi.nlm.nih.gov/29604395 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....4a98b2a6d2371e91b3204bff28bddb11 |
| قاعدة البيانات: | OpenAIRE |
Full Text via ClinicalKey | تدمد: | 18731570 03009572 |
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