Question

A patient is being weaned from mechanicl ventilation. The ventilator seetings and ABG results are as...

A patient is being weaned from mechanicl ventilation. The ventilator seetings and ABG results are as follows:

Mode          SIMV

Set Rate      8 breaths/min

Vt                 650 ml

Fi02             35%

PS                25 cmH20

PH                7.44

PaC02         34

Pa02            96

Based on this information, what should the respiratory therapist recommend?

Increase the SIMV rate

Reduce the PS level

Reduce the VT

Reduce the Fi02
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Answer #1

ANSWER:WEANING IS A PROCESS OF DISCONTINUING VENTILATORY SUPPORT EITHER GRADUALLY OR INSTANTLY. INCREASING THE SIMV RATE (SYNCHRONIZED INTERMITTENT MANDATORY VENTILATION) WILL LEAD TO THE POSSIBILITY OF THE PATIENT BREATHING MORE ON THEIR OWN IS DECREASED.REDUCING THE FiO2 AND VT VALUES IS NOT DONE WHILE WEANING.FiO2 REFERS TO THE AMOUNT OF INSPIRED FRACTION OF OXYGEN.VT(TIDAL VOLUME) REFERS TO THE AMOUNT OF VOLUME THAT WILL BE LIBERATED IN EACH BREATH.PS REFERS TO THE PRESSURE SUPPORT WHICH SHOULD BE REDUCED TO LESS THAN 20 Cm H2O BECAUSE OVER THIS LEVEL IT REQUIRES FULL MECHANICAL SUPPORT.HENCE THE ANSWER REDUCE THE PS LEVEL IS CORRECT.

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