« previous next »

Author Question: What is the Pflex on the following pressure-volume loop? a. 10 cm H2O b. 15 cm H2O c. 19 cm H2O ... (Read 62 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
on: Jul 16, 2018
What is the Pflex on the following pressure-volume loop?
 
  a. 10 cm H2O
  b. 15 cm H2O
  c. 19 cm H2O
  d. 23 cm H2O

Question 2

Regardless of the procedure used to establish an appropriate PEEP level, ventilating pressures should not be allowed to exceed which of the following?
 
  a. Upper inflation point on the inspiratory limb (UIPi)
  b. 2-3 cm H2O above the UIPi
  c. 30 cm H2O
  d. Lower inflection point on the inspiratory limb


babybsemail

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
The Pflex, or lower inflection point on the inspiratory limb, is the point on the curve where the slope of the inspiratory line changes significantly (see the following figure).

Answer to Question 2

ANS: A
Regardless of the procedure used to establish an appropriate PEEP level, ventilating pressures should not be allowed to exceed the UIP on the UIPi, because injury to lungs can occur if the lungs become overstretched. The appearance of the UIP on the graphic display may be influ-enced by the type of recruitment procedure used. For example, in one study, when the VT was set low (5-6 mL/kg), the UIP was 26 cm H2O.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Changes in cell shape due to alterations in intracellular fluid volume. Changes in cell shape due to alterations in intracellular fluid volume.
Pressure Zones Drive Winds Pressure Zones Drive Winds
Take Charge of Your Blood Pressure! Take Charge of Your Blood Pressure!
What volume of 8.25 M HCl solution must be diluted to prepare 2.40 L of 0.500 M What volume of 8.25 M HCl solution must be diluted to prepare 2.40 L of 0.500 M
The forces of diffusion and electrostatic pressure. (a) In diffusion, solutes move from an area of h The forces of diffusion and electrostatic pressure. (a) In diffusion, solutes move from an area of h
The consequences of crossover in the inversion loop in pericentric inversion heterozygotes The consequences of crossover in the inversion loop in pericentric inversion heterozygotes
Video: Homeostasis (range of body conditions, normal limits, mild stresses & severe stresses)

For a complete list of videos, visit our video library