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- P Schippel, L Wild, U Burkhardt, and D Olthoff.
- Klinik und Poliklinik für Anästhesiologie und Intensivtherapie, Universität Leipzig.
- Anaesthesist. 1999 May 1;48(5):317-24.
UnlabelledThe unwanted side effects of muscle relaxants used for anaesthesia in the newborn and infants resulted in a search for alternatives to atraumatic intubation (IN). The study was aimed to investigate conditions of intubation, time of intubation as well as changes in systolic, mean and diastolic blood pressure (RRs/RRm/RRd) and heart rate (HR) under the use of propofol (P) after narcosis induction by mask.Patients And MethodsThe study was approved by the local ethics committee. The data was analysed from 100 infants aged between 4 days and 56 weeks (weight 2110-9230 g) in the ASA I and II groups (Group [Gr] A and B both with 50 patients). In both groups induction was performed inhalationally with halothane (1.5-2.0 vol%) and pure oxygen. After that propofol for intubation was applied in a dose of 2 mg/kg i.v. In Gr A blood pressure and heart rate were registered at three measuring points (MP): MP 1 = before P administration, MP 2 = after P, MP 3 = following intubation; in Gr B at MP 1 and MP 3. Additionally in Gr B the intubation time was recorded in seconds (t1 = time after P administration to beginning of IN, t2 = time after P administration to the end of the IN, t3 = t2-t1). In both groups the conditions of intubation were assessed (score 1--excellent, 2--good, 3--bad, 4--impossible intubation).ResultsThe means of RRs/RRm/RRd/HR varied in Gr A at MP 2 by -11.20*/-9.18*/-8.58*/-3.52 mmHg/bpm and at MP 3 by -2.74/-2.26/-2.04/+5.46 mmHg/bpm in comparison to MP 1 (p < 0.05 = significant*). Compared to MP 1 in Gr B the mean values of RRs/RRm/RRd/HR varied at MP 3 by -0.89/+0.50/-0.80/+4.20* mmHg/bpm. T1 (mean, SD) was 10.88 +/- 3.52 seconds (s), t2 26.22 +/- 6.12 s, and t3 was therefore 15.78 +/- 6.28 s. Conditions of intubation were found to be excellent or good in both groups (Gr A and B [100 patients]: score 1 = 95x = 95%, score 2 = 5x = 5%).ConclusionIn the observation period, changes in heart rate stayed in the range of reference. In our opinion the excellent and good conditions for intubation, as well as the ultrashort drug-onset and intubation time demonstrate the good characteristics afforded by propofol to perform intubation in infancy.
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