Question

QUESTION 1 - Used for acne and is susceptable to chelation \ Doesn't cause sun sensitivity Stem(s) used for macrolides Stem(s) used for tetracyclines - Stem(s) used for aminoglycosides a. -thromycin b. Macrolides c. Tetracyclines d. Azithromycin e. -myCin, micin f. Erythromycin g. -cycline - Requires a loading dose \ Causes increased bleeding when taken with warfarin QUESTION 2 Doxycylcine Erythromycin Azithromycin a. Used for periodontal disease b. Causes the most Gl symptoms c. Doesn't affect P-450 CYP 3A4 enzymes d. Primary antibiotic used for PUD triple therapy - Clarithromycin

Answer 1

Question 1:

Used for acne and is susceptible to chelation - c.tetracycline. The first choice of treating acne which is susceptible to chelation.

Doesn't cause sun sensitivity - d. azithromycin. Azithromycin doesn't produce much effect on photosensitivity.

Stem(s) used for macrolides - a. thromycin. Clarithromycin, azithromycin, erythromycin are some of the macrolides.

Stem(s) used for tetracycline - g. cycline. cycline is used for tetracycline.

Stem(S) used for aminoglycoside(s) - e. -mycin, -miacin gentamycin, tobramycin, neomycin, amikacin are some of the aminoglycosides.

Requires a loading dose - f. erythromycin loading dose used to treat certain respiratory infections.

Causes increased bleeding when taken with warfarin - b. Macrolide. Macrolide increases the INR and interferes with warfarin activity.

Question 2

Doxycycline - a. Used for periodontal disease - doxycycline used for treating gum diseases.

Erythromycin - b. Causes for most GI problems - Erythromycin produces the most serious GI side effects.

Azithromycin - c. Doesn't affect P-450 CYP 3A4 enzymes - It neither inhibit nor implicit P-450 enzymes.

Clarithromycin - d. a primary antibiotic used for PUD triple therapy- It is the first-line therapy used for PUD.