The Science Journal of the American Association for Respiratory Care
Introduction: This is a 2 year old female whose past medical history includes tracheostomy, secondary to trachiobronchomalacia, and reactive airways disease with new onset bronchiolitis/respiratory failure. She was admitted to our Pediatric Intensive Care Unit from an outlying institution where she had been decannulated, intubated and mechanically ventilated for thirty-six hours. Persistent hypercarbia and hypoxemia with ground glass appearance on chest roentgenogram were reported. Upon arrival, her ventilatory requirement of 189 cc/kg/min. corrected exhaled minute ventilation, PEEP 15 cm H2O, PIP 37 cm H2O and FiO2 1.0 yielded the following: pH 7.28, PaCO2 67.5, PaO2 77.5, HCO3 36.3, B.E. 10.3, PaO2/FiO2 (P/F) 78, Oxygenation Index (OI) 30. A cuffed endotracheal tube was later placed, due to continued leakage around the uncuffed tube.
Methods: During this admission, a multitude of interventions were trialed including terbutaline, versed, fentanyl and pavulon infusions, solumedrol, zantac, lasix, inhaled nitric oxide (NO) and Survanta administration via direct instillation.
Results: This graph shows varied responses to inhaled nitric oxide pre and post Survanta delivery with no other changes in patient intervention.
| Nitric oxide pre Survanta administration | P/F | % change | OI | % change |
| Admission (day 2 of mechanical ventilation-MV) | 78 | - | 30 | - |
| 1 hr. into 1st NO trial (day 3 of MV) | 72 | No response | 31 | - |
| 2 hrs. into 1st NO trial (day 3 of MV) | 60 | No response | 37 | - |
| 6 hrs. into 1st NO trial | 60 | No response | 35 | - |
| (discontinued on day 3 of MV) | ||||
| Survanta administration | P/F | % change | OI | % change |
| Pre surfactant administration (day 5 of MV) | 71 | - | 37 | - |
| Post surfactant administration (day 6 of MV) | 72 | No change | 35 | 5% |
| Nitric oxide post Survanta administration | PF | % change | OI | % change |
| 1 hr. into 2nd nitric oxide trial (day 6 of MV) | 97 | 27%* | 26 | 30%* |
| 4 hrs. into 2nd nitric oxide trial (day 6 of MV) | 97 | 27%* | 26 | 30%* |
| 8 hrs. into 2nd nitric oxide trial (day 6 of MV) | 90 | 21%* | 27 | 27%* |
| 13 hrs. into 2nd nitric oxide trial (day 6 of MV) | 98 | 28%* | 22 | 41%* |
| *(20% change in the P/F or OI is considered a favorable response) | ||||
Conclusions: Upon review of this patient's course of illness and response to therapeutic interventions, it seems inhaled nitric oxide after Survanta administration yielded a more favorable response than nitric oxide alone or Survanta alone.
OF-99-054