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WHICH AIRWAY PRESSURE SHOULD BE APPLIED DURING BREATH‐HOLD IN DOGS UNDERGOING THORACIC COMPUTED TOMOGRAPHY?
Author(s) -
Guarracino Alessandro,
Lacitignola Luca,
Auriemma Edoardo,
Monte Valentina,
Grasso Salvatore,
Crovace Antonio,
Staffieri Francesco
Publication year - 2016
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/vru.12388
Subject(s) - medicine , atelectasis , computed tomography , lung , airway , computed tomographic , nuclear medicine , radiology , anesthesia
This randomized controlled trial study aimed to identify the optimal positive pressure (PP) level that can clear atelectasis while avoiding pulmonary hyperinflation during the breath‐hold technique in dogs undergoing thoracic computed tomography (CT). Sixty dogs affected by mammary tumors undergoing thoracic CT for the screening of pulmonary metastases were randomly assigned to six groups with different levels of PP during the breath‐hold technique: 0 (control), 5 (PP5), 8 (PP8), 10 (PP10), 12 (PP12), and 15 (PP15) cmH 2 O. The percentage of atelectatic lung region was lower in the PP10 (3.7 ± 1.1%; P = 0.002), PP12 (3.4 ± 1.3%; P = 0.0001), and PP15 (2.8 ± 0.9%; P = 0.006) groups than in the control group (5.0 ± 2.3%), and the percentage of poorly aerated lung region was lower in the PP8 (15.1 ± 2.6%; P = 0.0009), PP10 (13.0 ± 2.0 %; P = 0.002), PP12 (13.0 ± 2.2 %; P = 0.0002), and PP15 (11.1 ± 1.9%; P = 0.0002) groups than in the control group (19.8 ± 5.0). The percentage of normally aerated lung region, however, was higher in the PP10 (79.7 ± 4.1%; P = 0.005), PP12 (79.8 ± 5.1%; P = 0.0002), and PP15 (80.2 ± 4.9%; P = 0.002) groups than in the control group (73.4 ± 6.6%). A PP of 10–12 cmH 2 O during the breath‐hold technique should be considered to improve lung aeration during a breath‐hold technique in dogs undergoing thoracic CT.