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The prone position is associated with a decrease in respiratory system compliance in healthy anaesthetized infants
Author(s) -
Cox Robin G.,
Ewen Alastair,
Bart Bevin B.
Publication year - 2001
Publication title -
pediatric anesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.704
H-Index - 82
eISSN - 1460-9592
pISSN - 1155-5645
DOI - 10.1046/j.1460-9592.2001.00646.x
Subject(s) - supine position , medicine , anesthesia , prone position , pulmonary compliance , respiratory physiology , rocuronium , isoflurane , ventilation (architecture) , respiratory minute volume , propofol , nitrous oxide , pulmonary function testing , peak inspiratory pressure , tidal volume , respiratory system , mechanical engineering , engineering
Ten healthy (ASA I or II) anaesthetized infants undergoing clubfoot surgery were studied. General anaesthesia included rocuronium, nitrous oxide and isoflurane. Volume controlled ventilation (12 ml·kg −1 ) was delivered via a coaxial Mapleson‐D (Bain) system and a Datex AS/3 ventilator. Pulmonary mechanics were measured sequentially in the supine and prone positions using a Bicore CP‐100 pulmonary function monitor. Subjects had a mean age of 6 (± 2) months and a mean weight of 8.3 (± 1.4) kg. Dynamic compliance (C DYN ) and static compliance (C STAT ) were both significantly lower in the prone position than in the supine position ( P < 0.0005). Mean C DYN decreased from 14.9 ± 4.9 ml·cmH 2 O –1 (supine) to 11.6 ± 3.5 ml·cmH 2 O –1 (prone). Mean C STAT decreased from 10.2 ± 2.8 ml·cmH 2 O –1 (supine) to 8.9 ± 2.3 ml·cmH 2 O –1 (prone). No clinically significant differences in gas exchange were noted, however, on repositioning.