Abstract

BURITICA GAVIRIA, Edwin; ECHEVERRY BONILLA, Diego  and  OSPINA ARGUELLES, Diego. EFFECT OF TWO MANUAL CYCLICAL ALVEOLAR RECRUITMENT MANEUVERS ON THE VALUE OF BLOOD GASES IN ANESTHETIZED DOGS. rev.udcaactual.divulg.cient. [online]. 2016, vol.19, n.1, pp.161-168. ISSN 0123-4226.

The atelectasis during anesthesia affects gas exchange in humans and animals; this can be corrected using alveolar recruitment maneuvers (MRA). This study evaluated the effect of two cyclic alveolar recruitment protocols by increasing the positive end expiratory pressure (PEEP) on six parameters of arterial blood gases in 28 anesthetized bitches. The animals were randomly distributed into two groups according to the alveolar recruitment maneuver (MRA) to perform; Group 1: Maneuver 1 (M1) recruited with PEEP of 10cmH₂O and group 2: Maneuver 2 (m²) with PEEP 20cmH₂O recruited with 20 cmH₂O PEEP. Cyclic maneuvers were performed using ambulatory manual breathing units (AMBU). The PaO₂, PaCO₂, TCO₂, PaO₂/ FiO₂, SpO₂ y CaO₂ values was analyzed for each MRA in four times; T1 (baseline in preanesthesia), T2 (before of the recruitment), T3 (30 minutes after maneuver) and T4 (24 hours after maneuver). In the T2 moment the PaO₂, PaCO₂, TCO₂, SpO₂ and CaO₂ values showed a significant increase (p<0.05) from T1 baseline moment. No significant changes were apparent after performing each maneuver in the time T3 of evaluation; however, there was a significant increase (p <0.05) in PaO₂ of 13.5% in the time T4 after making the m² maneuver. From which we conclude that the performance of alveolar recruitment maneuvers by artificial manual breathing units - AMBU are a safe alternative to assisted ventilation during alveolar recruitment maneuvers with PEEP lower than 20cmH₂O in clinically healthy animals.

Keywords : Anesthesia; atelectasis; gasometry; manual ventilation; oxygenation.

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