Which of the following is/are true about the flow-resistor ...

[V@ndy87]

Which of the following is/are true about the flow-resistor breathing exerciser? 1. Exhaled gas flows unimpeded out a one-way valve. 2. Resistance is created by a variable-size orifice. 3. Imposed load varies with the rate of flow.
 
  a. 2 and 3 only
  b. 1, 2, and 3
  c. 1 and 2 only
  d. 2 only

Question 2

Which of the following exercises are useful for reconditioning the upper extremities of patients undergoing pulmonary rehabilitation?
 
  1. Using a rowing machine
  2. Using an arm ergometer
  3. Pedaling a stationary bicycle
  4. Using free hand weights
  a. 1, 2, 3, and 4
  b. 1 and 3 only
  c. 1, 2, and 4 only
  d. 2 and 4 only

[owenfalvey]

Answer to Question 1

ANS: C
Varying the size of this orifice varies the inspiratory load, as do changes in the patient's inspira-tory flow. During expiration, gas flows unimpeded out the one-way exhalation valve. Other types of devices are also available. One model replaces the variable size orifice with an adjustable spring-loaded valve. This ensures a relatively constant load regardless of how fast or slowly the patient breathes.

Answer to Question 2

ANS: C
Arm ergometers or rowing machines are available for this purpose; however, simple calisthenics using either a broomstick or free weights (by prescription and with training) are a satisfactory al-ternative.

[V@ndy87]

Excellent

[gcook]

TYSM