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

Author Question: The ventilator mode that would be most appropriate to iatrogenically induce hyperventilation to ... (Read 36 times)

iveyjurea

  • Hero Member
  • *****
  • Posts: 555
on: Jul 16, 2018
The ventilator mode that would be most appropriate to iatrogenically induce hyperventilation to manage a closed head injury patient with severely elevated intracranial pressure (ICP) is which of the following?
 
  a. Volume support ventilation (VSV)
  b. Airway pressure release ventilation (APRV)
  c. Pressure-controlled continuous mandatory ventilation (PC-CMV)
  d. Volume-controlled intermittent mandatory ventilation (VC-IMV)

Question 2

Full ventilatory support is provided by which of the following modes?
 
  a. Pressure support ventilation (PSV) with continuous positive airway pressure (CPAP)
  b. Volume support ventilation (VSV) with continuous positive airway pressure (CPAP)
  c. Volume-controlled intermittent mandatory ventilation (VC-IMV) rate 6 with pressure support (PS)
  d. Pressure-controlled intermittent mandato-ry ventilation (PC-IMV) rate 12 with pressure support (PS)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

leahm14

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
To deliberately hyperventilate a patient, each breath needs to be a machine breath (either volume or pressure). The only mode from the choices given that does that is the pressure-controlled con-tinuous mandatory ventilation (PC-CMV) mode. Volume support ventilation (VSV) is a patient triggered, volume targeted, flow cycled mode of ventilation that has no backup rate and there-fore is a purely spontaneous mode. Airway pressure release ventilation (APRV) is designed to provide two levels of continuous positive airway pressure (CPAP) and to allow spontaneous breathing at both levels when spontaneous effort is present. If the patient is not breathing spon-taneously, APRV resembles pressure-controlled inverse ratio ventilation (PCIRV) and could po-tentially elevate the patient's already elevated intracranial pressure (ICP). Volume-controlled in-termittent mandatory ventilation (VC-IMV) actually could be made to hyperventilate the patient if the rate is set high enough. The IMV mode is actually used to reduce the effect of patient hy-perventilation on acid-base balance. This happens because only the set rate is a ventilator breath; the rest are patient triggered with the patient's own tidal volume.

Answer to Question 2

ANS: D
Full ventilatory support is provided when the ventilator-initiated rates are set at 8 breaths/min or more in the continuous mandatory ventilation (CMV) or intermittent mandatory ventilation (IMV) modes with either pressure control or volume control.


iveyjurea

  • Member
  • Posts: 555
Reply 2 on: Jul 16, 2018
Excellent

amandanbreshears

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of
Hyperventilation Hyperventilation
Mode lof Chromosome Crossover Mode lof Chromosome Crossover
determining the mode of inheritance determining the mode of inheritance
How to calculate mean, median, and mode How to calculate mean, median, and mode
Binary fission, the reproductive mode of bacteria and archaea Binary fission, the reproductive mode of bacteria and archaea
Video: Sigmoidoscopy

For a complete list of videos, visit our video library