The therapist is about to establish mechanical ventilator settings for a COPD patient who has a large ventilation time constant. Which of the following considerations should the therapist have in mind at this time?
A. a large T
B. a long TE
C. a long TI
D. a low I
?ANS: B
A. Incorrect response: A large T contributes to a longer inspiratory time and increases the risk of auto-PEEP developing.
B. Correct response: Because the COPD patient has a large ventilation time constant (CL × Raw), this patient is likely to develop auto-PEEP if the expiratory phase is too short and inspiratory time is too long. This type patient requires a rapid inspiratory time and a prolonged expiratory time.
C. Incorrect response: A long inspiratory time will increase the likelihood of the patient developing auto-PEEP because less time would be devoted to expiration.
D. Incorrect response: A low inspiratory flow may cause patient-ventilator dyssynchrony.
You might also like to view...
Which surgical suffix means a withdrawal of fluid?
A) -centesis B) -desiccation C) -lysis D) -pexy
This type of muscle tissue is controlled by the autonomic nervous system
a. Epithelial b. Connective c. Striated muscle d. Smooth muscle
Before a ventilator is used, an operational verification check is performed. A simple variation of this procedure is also performed under which of the following circumstances?
a. Before a blood gas sample is obtained. b. When the physician's order specifies a change in ventilator settings. c. Before a patient is reconnected to a venti-lator after the ventilator circuit has been changed or disassembled for any reason. d. Before the patient's hemodynamic status is monitored.
HIPAA established the ________ Identifier to identify employer sponsored health insurance
A) National Health Plan B) Employer C) National Provider D) All of the above E) None of the above