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

Author Question: The scalars depicted here are flow, volume, airway pressure, and esophageal pressure. They were ... (Read 105 times)

pane00

  • Hero Member
  • *****
  • Posts: 579
on: Jul 16, 2018
The scalars depicted here are flow, volume, airway pressure, and esophageal pressure. They were obtained from a patient receiving pressure-controlled ventilation. What problem is depicted by these ventilator graphics?
 
  A. inverse I:E ratio ventilation
  B. alveolar overdistention
  C. decreased lung compliance
  D. trigger dyssynchrony

Question 2

Interpret the significance of the arrow shown on breath C present on the pressure-time scalar.
 
  A. an inspiratory pause
  B. an expiratory pause
  C. alveolar overdistention
  D. flow-cycling criterion


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

1_Step_At_ATime

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
A. Incorrect response: See explanation D.
B. Incorrect response: See explanation D.
C. Incorrect response: See explanation D.
D. Correct response: Focus primarily on the two pressure-time scalars.

Note that on the esophageal pressure-time (bottom-most) scalar, the arrows indicate an esophageal pressure change. The arrow on the left represents the beginning of patient inspiratory effort. Under normal circumstances, when no auto-PEEP is present, a drop in airway pressure would be taking place concurrently with the initial decrease in esophageal pressure, and an assisted breath would be triggered. However, the presence of auto-PEEP requires the patient to generate an inspiratory effort in excess of the auto-PEEP to trigger inspiration. In this situation, the esophageal pressure changed 25 cm H2O as 0.7 seconds elapsed before the airway pressure changed to trigger a breath. This level of pressure is a significant triggering workload on the patient.

Answer to Question 2

ANS: B
A. Incorrect response: See explanation B.
B. Correct response: The arrow on the pressure-time scalar under the breath labeled C, shown in rationale 13, indicates that an expiratory hold was applied at the time the third breath in the sequence of the three shown. Performing an expiratory hold at this point in the ventilatory cycle enables auto-Peep to equilibrate with the circuit pressure and be measured.
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.


pane00

  • Member
  • Posts: 579
Reply 2 on: Jul 16, 2018
:D TYSM

jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Measuring Blood Pressure Measuring Blood Pressure
a) Thumb pressure with radial deviation b) Alternating stroke using ulnar deviation a) Thumb pressure with radial deviation b) Alternating stroke using ulnar deviation
Measuring Air Pressure Measuring Air Pressure
Apply direct thumb pressure into points along the upper trapezius from base of neck to shoulder. ... Apply direct thumb pressure into points along the upper trapezius from base of neck to shoulder. ...
What is the volume of 1.51 x 1024 atoms of an unknown gas at STP? What is the volume of 1.51 x 1024 atoms of an unknown gas at STP?
Simplified diagram of information flow (the central dogma) from DNA to RNA Simplified diagram of information flow (the central dogma) from DNA to RNA
Video: Conduction of action potentials

For a complete list of videos, visit our video library