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 145 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
YES! Correct, THANKS for helping me on my review

ryhom

  • Member
  • Posts: 366
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Schematic of an automated external defibrillator (AED) attached to a patient. Schematic of an automated external defibrillator (AED) attached to a patient.
Transurethral resection of the prostate (TURP). As a treatment for BPH, part of the prostate gland i Transurethral resection of the prostate (TURP). As a treatment for BPH, part of the prostate gland i
Common errors in blood pressure assessment Common errors in blood pressure assessment
Heat Exchanger Block Diagram Feedback Control System Heat Exchanger Block Diagram Feedback Control System
Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective. Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective.
Video: Exocytosis - secretion

For a complete list of videos, visit our video library