This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A patient is receiving mechanical ventilation in the pressure-regulated volume control (PRVC) mode ... (Read 115 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 16, 2018
A patient is receiving mechanical ventilation in the pressure-regulated volume control (PRVC) mode and suddenly has an increase in airway resistance. How will this increase in airway resistance influence the delivered tidal volume?
 
  A. The delivered tidal volume will remain relatively constant.
  B. The increased airway resistance will cause the delivered tidal volume to decrease.
  C. The increased airway resistance will result in an increased delivered tidal volume.
  D. An unpredictable tidal volume will be delivered because of the increased airway resistance.

Question 2

Which of the following methods enables the therapist to evaluate the presence of auto-PEEP? I. performing an inspiratory hold maneuver II. noting the presence of expiratory flow at the end of exhalation III. periodically measuring a smaller tidal volume during pressure-controlled ventilation IV. using an esophageal balloon
 
  A. I, III only
  B. II, IV only
  C. I, III, IV only
  D. II, III, IV only


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sierray

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
A. Correct response: Pressure-regulated volume control (PRVC) is a pressure-control mode with a volume target. It is also classified as a dual control mode. The therapist selects a tidal volume, and the ventilator delivers a test breath. During the test breath, the ventilator calculates the system compliance and airway resistance to determine the pressure needed to deliver the set tidal volume. The ventilator may adjust the pressure delivery every breath in increments of 1 to 3 cm H2O up to the maximum pressure that equals the upper pressure limit minus 5 cm H2O. Therefore the delivered tidal volume will remain relatively constant as either or both lung compliance and airway resistance change.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.

Answer to Question 2

ANS: B
A. Incorrect response: See explanation B.
B. Correct response: The presence of auto-PEEP can be evaluated via the following methods: (1) observing the persistence of expiratory flow at the end of the allotted expiratory time, which suggests incomplete lung emptying, and the presence of auto-PEEP, (2) observing from a flow-time scalar the failure of the expiratory flow to return to baseline and the initiation of an inspiration before expiratory flow ceases, (3) performing an end-expiratory hold following a mandatory breath devoid of any patient effort, and (4) using an esophageal balloon to detect the inspiratory triggering load imposed by any auto-PEEP. Esophageal pressure will be higher in the presence of auto-PEEP than in the absence of auto-PEEP.
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

nanny

  • Member
  • Posts: 313
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Role-Playing a Situation in Which a Patient Is Frightened, Angry, or Anxious Role-Playing a Situation in Which a Patient Is Frightened, Angry, or Anxious
A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ... A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ...
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ... Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
A fuel-pressure graph after key on, engine off (KOEO) on a TBI system. A fuel-pressure graph after key on, engine off (KOEO) on a TBI system.
Effleurage to transition to forearm-distal to proximal. Apply effleurage with moderate pressure to ... Effleurage to transition to forearm-distal to proximal. Apply effleurage with moderate pressure to ...
Allosteric control of liver PFK (c) Allosteric control of liver PFK (c)
Video: SNP Polymorphysim Microarray Chip - How to Test a Person's DNA

For a complete list of videos, visit our video library