Academic Journal
Entropy Generation and Exergy Destruction During and After Weaning from Mechanical Ventilation in Patients with Respiratory Failure ; Solunum Yetmezliği Olan Hastalarda Mekanik Ventilasyon Sırasında ve Sonrasında Entropi Üretimi ve Ekserji Yıkımı
| العنوان: | Entropy Generation and Exergy Destruction During and After Weaning from Mechanical Ventilation in Patients with Respiratory Failure ; Solunum Yetmezliği Olan Hastalarda Mekanik Ventilasyon Sırasında ve Sonrasında Entropi Üretimi ve Ekserji Yıkımı |
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| المؤلفون: | ÇATAK, Jale, DEVELİ, Elif, BAYRAM, Serkan |
| المصدر: | Issue: 18 283-289 ; 2148-2683 ; Avrupa Bilim ve Teknoloji Dergisi |
| بيانات النشر: | Osman SAĞDIÇ |
| سنة النشر: | 2020 |
| المجموعة: | DergiPark Akademik (E-Journals) |
| مصطلحات موضوعية: | Mechanical ventilation,Entropy generation,Exergy destruction,Respiratory thermodynamics,Thermodynamic analysis, Mekanik ventilasyon,Entropi üretimi,Ekserji yıkımı,Solunum termodinamiği,Termodinamik analiz |
| الوصف: | BACKGROUND: Mechanical ventilation is a useful supportive treatment for patients with respiratory failure who are not able to maintain the level of ventilation required to maintain the oxygenation and carbon dioxide elimination. Mechanical ventilation is often life-saving but it also has risks. Thermodynamic analyses are used to test the feasibility of processes leading to a better understanding of the systems overall performance. Energy losses (entropy) and the destruction of maximum useful work (exergy) leading to reduced respiratory work of breathing efficiency, can be calculated by thermodynamic analysis of the respiratory muscles.OBJECTIVE: To determine the entropy generation, exergy destruction and glucose consumption during and after weaning from mechanical ventilation in patients with respiratory failure by thermodynamic analysis. METHODS: In this study, a human respiratory system during and after weaning from mechanical ventilation was modelled thermodynamically using the first and second laws of thermodynamics. Work of breathing data is adapted from the literature. Mass and energy analyzes are carried out according to the 1st law of thermodynamics while entropy generation is calculated according to the 2nd law of thermodynamics which enables us to measure energy losses. In this thermodynamic model, the body temperature was considered at 37 °C, and surrounding air condition was taken at 25 °C.RESULTS: Exergy destructions during and after weaning from mechanical ventilation were calculated as 2.23x10-2 and 1.75x10-2 kJ/min, respectively. Entropy generation by the patients through the breathing cycle was 7.48x10-5 (kJ/K)/min during mechanical ventilation while 5.89x10-5 (kJ/K)/min after weaning from mechanical ventilation, respectively. The glucose consumed for work of breathing in patients during and after weaning from mechanical ventilation was calculated as 0.58-0.45 mmol/min, respectively.CONCLUSION: After weaning from mechanical ventilation, the patients have significantly decreased entropy ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://dergipark.org.tr/tr/download/article-file/979601; https://dergipark.org.tr/tr/pub/ejosat/issue/52599/690568 |
| DOI: | 10.31590/ejosat.690568 |
| الاتاحة: | https://dergipark.org.tr/tr/pub/ejosat/issue/52599/690568 https://doi.org/10.31590/ejosat.690568 |
| رقم الانضمام: | edsbas.C00AC04F |
| قاعدة البيانات: | BASE |
| DOI: | 10.31590/ejosat.690568 |
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