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Pulmonetic Systems LTV 950 - Spontaneous Breaths

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Page 3-6 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Spontaneous Breaths
For Spontaneous breaths, flow is delivered to meet patient demand and maintain the circuit pressure
at the measured PEEP from the previous breath. The breath is cycled when the flow drops below
10% of the maximum flow delivered during the breath, or below 3 lpm. Spontaneous breaths may
also be terminated by exceeding 2 breath periods. Spontaneous breaths are patient type breaths.
WARNING
Accuracy of PEEP setting - Variations in the patient’s breathing pattern and/or leaks in the patient
circuit (including leaks around the tracheostomy tube cuff) can affect PEEP. PSI recommends that the
clinician set the PEEP to the prescribed level on a test lung while observing the PEEP value in the
LTV display window. The clinician should also periodically monitor the PEEP value in the LTV display
window. Using an inaccurate PEEP setting due to a patient leak can result in less than prescribed
PEEP or undesirable increases in patient circuit pressure when the patient circuit leak changes.
AVERTISSEMENT
Exactitude du paramètre PEP – Les écarts dans le mode de respiration du patient et/ou les fuites
du circuit du patient (y compris les fuites autour du ballonnet pour canule de trachéostomie) peuvent
affecter le PEP. Des études et investigations pliminaires recommandent que le clinicien définisse le
PEP au niveau prescrit sur un poumon d’essai tout en observant la valeur PEP de l’écran graphique
LTV. Le clinicien doit par ailleurs surveiller de façon périodique la valeur PEP de l’écran graphique
LTV. L’utilisation d’un paramètre PEP inapproprié en raison d’une fuite de patient peut
potentiellement résulter en un paramètre inférieur au paramètre PEP prescrit ou en une
augmentation indésirable de la pression du circuit du patient lorsque la fuite du circuit du patient
change

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