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Effects of endotracheal suctioning in high‐frequency oscillatory and conventionally ventilated low birth weight neonates on cerebral hemodynamics observed by near infrared spectroscopy (NIRS)
Author(s) -
Kohlhauser C.,
Bernert G.,
Hermon M.,
Popow C.,
Seidl R.,
Pollak A.
Publication year - 2000
Publication title -
pediatric pulmonology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 106
eISSN - 1099-0496
pISSN - 8755-6863
DOI - 10.1002/(sici)1099-0496(200004)29:4<270::aid-ppul6>3.0.co;2-q
Subject(s) - medicine , hemodynamics , anesthesia , heart rate , respiratory rate , high frequency ventilation , ventilation (architecture) , oxygen saturation , mechanical ventilation , blood pressure , oxygen , mechanical engineering , chemistry , organic chemistry , engineering
Abstract Adverse changes in cerebral hemodynamics during endotracheal suctioning have been reported in conventionally ventilated newborns, whereas observations on the effect of endotracheal suctioning during high‐frequency ventilation have not been reported to date. The present study was designed to investigate the effect of endotracheal suctioning on cerebral hemodynamics in high‐frequency and conventionally ventilated infants. Changes in cerebral concentration of oxygenated (cO 2 Hb) and deoxygenated hemoglobin (cHHb) and oxidized cytochrome aa3 (cCyt.aa3) were measured by noninvasive near‐infrared spectroscopy. In an open prospective study, 26 suctioning periods in 9 high‐frequency and in 6 conventionally ventilated newborn infants were investigated. Heart rate, arterial oxygen saturation (SaO 2 ), mean blood pressure (MABP), and transcutaneous carbon dioxide tension (TcpCO 2 ) were monitored continuously. In both groups, a marked decrease in heart rate, SaO 2 and in cO 2 Hb, an increase in cHHb, and a variable pattern in the concentration of total hemoglobin were noted during endotracheal suctioning. During suctioning, no statistically significant differences between the two methods of mechanical ventilation could be observed. We conclude that the mode of ventilation had no significant effect on changes in cerebral hemodynamics during endotracheal suctioning. Pediatr Pulmonol. 2000;29:270–275. © 2000 Wiley‐Liss, Inc.