A 14-year-old boy who had previously been diagnosed with mild persistent asthma has a PEFR of 100 L/min. This indicates which of the following?
a. Increased airway resistance
b. Heart failure
c. Increased lung compliance
d. Inability to take in a deep breath and cough
ANS: A
For patients with acute asthma, the PEFR is the most frequently used parameter to assess airway resistance.
Peak expiratory flow rate (PEFR) (L/min) 350-600 (normal) 75-100 (critical value)
You might also like to view...
Benign growths suspended by a stalk on mucous membranes are called:
a. Pedunculated polyps b. Stalactites c. Campylobacters d. Mumps
The myometrium consists of voluntary muscle
Indicate whether the statement is true or false
Which type of restoration covers the area between the cusps in the middle of the tooth?
a. Onlay b. Three-quarter crown c. Inlay d. Veneer
Prior to reporting a patient's lab result, what should be analyzed?
A) A positive control B) A negative control C) Both normal and abnormal controls D) A second test to confirm the results