Continuous-flow apneic ventilation during thoracotomy

M. F. Babinski, R. B. Smith, Leonid Bunegin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Continuous-flow apneic ventilation (CFAV) by endobronchial insufflation of conditioned gas was evaluated in dogs during thoracotomy. In Group 1 (n = 6), dogs were anesthetized with pentobarbital (25 mg/kg). An endobronchial catheter (2.5 mm ID) was introduced into each mainstem bronchus using a fiberoptic bronchoscope and held in place by an endotracheal tube. Before the onset of CFAV (total flow 1.0 1 · kg-1 · min-1, the animals were paralyzed with pancuronium bromide and muscle relaxation was monitored with a peripheral nerve stimulator. The CFAV delivery system consisted of a flow meter, air/oxygen blender, oxygen analyzer, heated humidifier, and ultrasonic spirometer. Blood gas values were measured after 30 min of spontaneous ventilation, and CFAV with: 1) closed chest, fractional inspired O2 concentration (FI(O2)) 0.21; 2) open chest, FI(O2) 0.21; 3) open chest, FI(O2) 0.21, continuous positive airway pressure (CPAP) 5 mmHg; and 4) open chest FI(O2) 0.4, CPAP 5 mmHg. This last combination resulted in a mean Pa(O2) of 113.1 ± 5.5 (SEM) mmHg and a Pa(CO2) of 35.0 ± 2.1 (SEM) mmHg. In Group 2 (n = 6), animals with open chests were ventilated with CFAV (FI(O2) 0.4 and CPAP 5 mmHg) for 5 h. Adequate oxygenation and ventilation were achieved. Pa(CO2) after 5 h of CFAV was 41.8 ± 1.9 (SEM) mmHg compared with 40.8 ± 1.9 (SEM) mmHg during spontaneous breathing. Pa(O2) after 5 h of CFAV was 138.1 ± 11.7 (SEM) mmHg. There were no significant changes observed in vascular pressures. Significant differences in other hemodynamic parameters were probably due to pentobarbital anesthesia. Adequate gas exchange can be achieved during CFAV in dogs with open chests for 5 h.

Original languageEnglish (US)
Pages (from-to)399-404
Number of pages6
JournalAnesthesiology
Volume65
Issue number4
StatePublished - 1986

Fingerprint

Thoracotomy
Ventilation
Thorax
Continuous Positive Airway Pressure
Gases
Dogs
Pentobarbital
Oxygen
Pancuronium
Bronchoscopes
Insufflation
Muscle Relaxation
Bronchi
Peripheral Nerves
Ultrasonics
Blood Vessels
Respiration
Catheters
Anesthesia
Hemodynamics

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Cite this

Babinski, M. F., Smith, R. B., & Bunegin, L. (1986). Continuous-flow apneic ventilation during thoracotomy. Anesthesiology, 65(4), 399-404.

Continuous-flow apneic ventilation during thoracotomy. / Babinski, M. F.; Smith, R. B.; Bunegin, Leonid.

In: Anesthesiology, Vol. 65, No. 4, 1986, p. 399-404.

Research output: Contribution to journalArticle

Babinski, MF, Smith, RB & Bunegin, L 1986, 'Continuous-flow apneic ventilation during thoracotomy', Anesthesiology, vol. 65, no. 4, pp. 399-404.
Babinski, M. F. ; Smith, R. B. ; Bunegin, Leonid. / Continuous-flow apneic ventilation during thoracotomy. In: Anesthesiology. 1986 ; Vol. 65, No. 4. pp. 399-404.
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