A patient with a tracheostomy tube is receiving positive-pressure ventilation through a volume ventilator
Over the past 5 min, the peak inspiratory pressure has risen, and the pressure limit alarm is now sounding. On quick examination, you notice a generalized decreased in breath sounds. Which of the following problems is most likely?
a. Partial obstruction of the tracheostomy tube
b. Complete obstruction of the tracheostomy tube
c. Development of a left-sided pneumotho-rax
d. Obstruction of the left bronchus by a mu-cus plug
ANS: A
A spontaneously breathing patient with partial airway obstruction will exhibit decreased breath sounds and decreased airflow through the tube. If the patient is receiving volume-controlled ven-tilation, peak inspiratory pressures will rise, often causing the high-pressure alarm to sound; dur-ing pressure-controlled ventilation, delivered tidal volumes will fall.
You might also like to view...
Which of the following will make an intermittent positive-pressure breathing (IPPB) device cycle off prematurely?
1. Airflow obstructed 2. Kinked tubing 3. Occluded mouthpiece 4. Active resistance to inhalation a. 1 and 2 only b. 1 and 3 only c. 1, 3, and 4 only d. 1, 2, 3, and 4
At about three months gestation, the placenta begins to secrete its own progesterone and estrogen
Indicate whether the statement is true or false
Which type of mastoidectomy removes air cells using a small burr by opening the mastoid process behind the ear?
a. Simple mastoidectomy b. Modified radical mastoidectomy c. Radical mastoidectomy d. Simple mastectomy
The occurrence of trismus and hematoma can be minimized by ________ the number of needle penetrations
Fill in the blank(s) with correct word