Which of the Following Should Be Withheld for 48 Hours $\beta$

question 9

Multiple Choice

Which of the following should be withheld for 48 hours before bronchial challenge testing?

• A) Theophylline
• B) \(\beta\)-Adrenergic agents
• C) Anticholinergic preparations
• D) Beverages containing caffeine

---

Definitions:

Room Temperature

The ambient temperature of a room, typically considered to be about 20 to 22 degrees Celsius (68 to 72 degrees Fahrenheit).

Hydrogen Bonding

A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.

Surface Tension

Force that holds moist membranes together due to the attraction of water molecules through hydrogen bonds.

Water Molecules

The smallest unit of water (H2O), consisting of two hydrogen atoms covalently bonded to one oxygen atom, essential for most forms of life on Earth.