Journals / Türk Anestezi ve Reanimasyon Dergisi / 2004 / Cilt: 32 - Sayı: 6

Comparison of CPAP, tidal volume breathing and deep breathing techniques for preoxygenation in obese patients

Obez olguların preoksijenasyonunda CPAP, tidal volüm solunumu ve derin solunum tekniklerinin karşılaştırılması

Pages
449–459
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

When SpO2 was 95 % the increases in partial arterial carbon dioxide pressure (PaCO2) were higher in TVB/5L and 4 DB/30 sec groups.The time for desaturation (SpO2 99 %) was longer in 8 DB/60 sec. group.Considering the highest PaO2 values, the longest desaturation time, the lowest changes in PaCO2 and pH together we found a better preoxygenation with 10 L min-1 flow 8 DB/60 sec and 8 L min-1 flow TVB/3 min techniques.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Continuous positive airway pressure (CPAP), tidal volume breathing (TVB) and deep breathing (DB) techniques were compared for preoxygenation in obese patients.115 patients were randomly assigned into five groups to recieve preoxygenation (Group CPAP/3 min) 3 min with 7.5 cmH2O CPAP, (Group TVB/5L) TVB at 5 L min-1 for 3 min, (Group TVB/8L) TVB at 8 L min-1 for 3 min, (Group 8 DB/60 sec) 8 DB at 10 L min-1 for 60 sec, and ( Group 4 DB/30 sec) 4 DB at 10 L min-1 for 30 sec before anesthesia induction.
📊
Key Findings & Data:Arterial blood gas samples were taken while breathing room air, after preoxygenation, and during apnea when peripheral oxygen saturation (SpO2) decreased to 95 %.
💡
Conclusion & Impact:When SpO2 was 95 % the increases in partial arterial carbon dioxide pressure (PaCO2) were higher in TVB/5L and 4 DB/30 sec groups.The time for desaturation (SpO2 99 %) was longer in 8 DB/60 sec. group.Considering the highest PaO2 values, the longest desaturation time, the lowest changes in PaCO2 and pH together we found a better preoxygenation with 10 L min-1 flow 8 DB/60 sec and 8 L min-1 flow TVB/3 min techniques.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Continuous positive airway pressure (CPAP), tidal volume breathing (TVB) and deep breathing (DB) techniques were compared for preoxygenation in obese patients.115 patients were randomly assigned into five groups to recieve preoxygenation (Group CPAP/3 min) 3 min with 7.5 cmH2O CPAP, (Group TVB/5L) TVB at 5 L min-1 for 3 min, (Group TVB/8L) TVB at 8 L min-1 for 3 min, (Group 8 DB/60 sec) 8 DB at 10 L min-1 for 60 sec, and ( Group 4 DB/30 sec) 4 DB at 10 L min-1 for 30 sec before anesthesia induction. Arterial blood gas samples were taken while breathing room air, after preoxygenation, and during apnea when peripheral oxygen saturation (SpO2) decreased to 95 %. The apnea induced desaturation times to 99 % and 95, the resaturation times after ventilation with 100 % O2, mean arterial blood pressure (MAP), and heart rate (HR) were recorded. Kruskal-Wallis, Mann-Whitney U, Wilcoxon Signed Ranks tests were used for statistical analysis.After the preoxygenation significant increases in partial arterial oxygen pressure (PaO2) was measured in TVB/8L group. When SpO2 was 95 % the increases in partial arterial carbon dioxide pressure (PaCO2) were higher in TVB/5L and 4 DB/30 sec groups.The time for desaturation (SpO2 99 %) was longer in 8 DB/60 sec. group.Considering the highest PaO2 values, the longest desaturation time, the lowest changes in PaCO2 and pH together we found a better preoxygenation with 10 L min-1 flow 8 DB/60 sec and 8 L min-1 flow TVB/3 min techniques.

Özet

Obez hastalarda preoksijenasyon amacıyla "continuous positive airway pressure" (CPAP), tidal volüm solunumu (TVS) ve derin solunum (DS) teknikleri karşılaştırıldı.115 olgu rastgele beş gruba ayrıldı. CPAP/3 dk. grubunda: 7.5 cmH2O basınçla 3 dk. CPAP, TVS/5 L grubunda: 5 L dk-1 akımla 3 dk. TVS, TVS/8L grubunda: 8 L dk-1 akımla 3 dk. TVS, 8 DS/60 sn. grubunda: 10 L dk-1 akımla 60 sn. 8 DS, 4 DS/30 sn. grubunda: 10 L dk-1 akımla 30 sn. 4 DS tekniğiyle preoksijenasyon uygulandı. Kan gazı oda havasında, preoksijenasyon sonrasında ve apne döneminde periferik O2 satürasyonu (SpO2) % 95'e düşünce alındı. SpO2'nin % 100'den 99'a ve 95'e düştüğü süreler, % 100 O2 ile ventilasyon sonrası % 95'ten 99'a çıktığı resatürasyon süresi, ortalama kan basıncı (OKB) ve kalp atım hızları (KAH) kaydedildi. İstatistiksel değerlendirmede Kruskal-Wallis, Mann-Whitney U, Wilcoxon Signed Ranks testleri kullanıldı.Preoksijenasyon sonrası parsiyel arteriyel O2 basıncındaki (PaO2) en yüksek artış TVS/8L grubunda görüldü. SpO2 % 95 iken parsiyel arteriyel CO2 basıncındaki (PaCO2) artış TVS/5L ve 4 DS/30 sn. grubunda daha yüksekti. SpO2'nin % 99'a düşmesi için geçen süre 8 DS/60 sn grubunda daha uzun bulundu.En yüksek PaO2 değerleri, en uzun desatürasyon süresi, en az PaCO2 ve pH değişikleri birlikte değerlendirilince preoksijenasyon için 10 L dk-1 akımla 8 DS/60 sn ve 8 L dk-1 akımla TVS/3 dk. tekniklerinin daha iyi olduğu kanısına varıldı.

🔖

Cite This Article

BİLGİN, H., PEHLİVANOĞLU, Ş. (2022). Comparison of CPAP, tidal volume breathing and deep breathing techniques for preoxygenation in obese patients. Türk Anestezi ve Reanimasyon Dergisi, Cilt: 32 - Sayı: 6, 449–459. https://ajindex.com/articles/620165

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (17)

  1. Damia G, Maschcroni D, Croci M, Tarenzi L. Perioperative changes in functional residual capacity in mor bidly obese patients. Br J Anaesth 1988; 60:574-578
  2. Vaughan RW, Bauer S, Wise L. Volume and pH of gastric juice in obese patients. Ancsthesiology 1975; 43:686-689
  3. Jense HG, Dubin SA, Silvcrstein PI, O'Leary-Esco- las U. Effect of obesity on duration of apneu in anestheti zed humans. Ancsth Analg 1991; 72:89-93
  4. Valentine SJ, Marjot R, Monk CR. Preoxygcnation in the elderly: a comparison of the four-maximal-breath and three-minutes techniques. Anesth Analg 1990; 71:516-519
  5. Kayhan Z. Solunum sistemi ve anestezi. Klinik aneste zi 2.baskı. Ankara: Logos yayıncılık; 1997; 176-177
  6. Morgan GE, Mikhail MS. Clinical Anesthesiology. 3rd edition.USA: The McGraw-Hill Companies: 2002; 504;748-749
  7. Baraka AS, Hana TM, Jabbour SI, et al. Preoxyge- nation of pregnant and nonpregnant women in the head- up versus supine position. Anesth Analg 1992; 757-759
  8. Berthoud CM, Peacock EJ, Reilly SC. Effectiveness of preoxygenation in morbidly obese patients. Br J Ana esth 1991; 67:464-466
  9. Farmery AD, Roe PG. A model to describe the rate of oxyhemoglobin desaturation during apnoea. Br J Anaesth 1996; 76:284-291 10. Juvin P, Lavaut E, Dupont H, et al. Difficult trache al intubation is more common in obese than in lean pati ents. Anesth Analg 2003; 97:595-600
  10. Berry CB, Myles PS. Preoxygenation in healthy vo lunteers. A graph of oxygen "washin" using end-tidal oxygraphy. Br J Anaesth 1994; 72:116-118
  11. Byrne F, Oduro-Dominah A, Kipling R. The effect of pregnancy on pulmonary nitrogen washout: A study of pre-oxygenation. Anaesthesia 1987; 42:148-150
  12. Hamilton W, Eastwood Ü. A study of denitrojenati on with some inhalation anesthetic systems. Anesthesi ology 1955; 16:861-867
  13. Gold MI, Duarte I, Muravchick S. Arterial oxygenation in conscious patients after 5 minutes and after 30 seconds of oxygen breathing. Ancsth Analg 1981; 60:313- 315
  14. Cressey DM, Berthoud CM, Reilly SC. Effective ness of continuous positive airway pressure to enhance pre-oxygenation in morbidly obese women. Anaesthesia 2001; 56:670-689
  15. Hirsch J, Fuhrer I, Kuhly P, Schaffartzik W. Pre oxygenation: a comparison of three different breathing systems. Br J Anaesth 2001; 87: 928-933
  16. Ooi R, Joshi P, Soni NA. High flow semi-open sys tem for preoxygenation: an evaluation. Br.1 Anaesth 1992; 68:39-42
  17. Smith CE, Boyer D. Cricoid pressure decreases ease of trac