Fluctuations may be more likely to occur if the total flow through the device sensor (used by the device to determine flow) is less than the minimum device requirement of 0.5 LPM. In addition, dose fluctuations have been observed when Bunnel LifePulse HFJV system or conventional ventilators have the following device settings: low service pressures generally less than 3.0 PSI, a pressure difference greater than 5.0cm H2O; or at breath per minute rates of 300 (5 Hz).
The unexpected internal fault / system diagnostic error to result when a rapid succession of button selections is made to the user interface without waiting for the device to respond to user prompts.
Replacement of the internal Sample Pump due to high failure rates.
Device may experience malfunctions due to misalignment of the check valve in the manifold. If the device fails, there is a risk of nitric oxide leak, oxygen gas leak, or earlier cylinder gas changeover than expected or not at all. In a worst case scenario, there may be an interruption in therapy which could lead to oxygen desaturation of the patient and associated complications.