CMN 574 EXAM 3 COMPREHENSIVE
PRIMARY CARE STUDY GUIDE
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. A 4-year-old child presents with a ‘barking’ cough and inspiratory stridor that worsens at
night. The most likely diagnosis is Laryngotracheobronchitis. What is the recommended first-
line pharmacological treatment for a mild to moderate case?
A. A single dose of Dexamethasone (0.6 mg/kg)
B. Nebulized Albuterol every 4 hours
C. Oral Amoxicillin 80-90 mg/kg/day
D. Cough suppressants with codeine
Answer: A
Conceptual Explanation: Dexamethasone is the mainstay of treatment for Croup
(Laryngotracheobronchitis) as it reduces airway edema. Antibiotics are not indicated for
this viral illness, and albuterol does not treat the subglottic inflammation.
,2. In the management of Community-Acquired Pneumonia (CAP) in a previously healthy adult
with no recent antibiotic use, which of the following is considered first-line according to
current ATS/IDSA guidelines?
A. Ciprofloxacin
B. Amoxicillin or Doxycycline
C. Vancomycin
D. Trimethoprim-Sulfamethoxazole
Answer: B
Conceptual Explanation: For healthy outpatients without comorbidities or risk factors for
MRSA/P. aeruginosa, Amoxicillin (1g TID) or Doxycycline are preferred first-line options.
3. A patient presents with a ‘herald patch’ followed by a generalized Christmas-tree pattern
rash on the trunk. What is the most likely diagnosis?
A. Tinea Corporis
B. Pityriasis Rosea
C. Secondary Syphilis
D. Guttate Psoriasis
Answer: B
, Conceptual Explanation: Pityriasis Rosea typically begins with a herald patch (a single 2-
10 cm oval lesion) followed by smaller lesions in a Christmas-tree distribution along skin
cleavage lines.
4. Which of the following physical exam findings is most suggestive of Acute Otitis Media
(AOM) rather than Otitis Media with Effusion (OME)?
A. Fluid levels behind the tympanic membrane
B. Bubbles in the middle ear space
C. Poor mobility on pneumatic otoscopy
D. Bulging of the tympanic membrane
Answer: D
Conceptual Explanation: Bulging of the tympanic membrane is the most specific sign of
acute inflammation and pressure indicative of AOM. OME is characterized by fluid without
signs of acute infection.
5. A 15-year-old athlete presents with a sore throat, cervical lymphadenopathy, and extreme
fatigue. A Monospot test is positive. What is the most important education regarding physical
activity?
A. Avoid all aerobic exercise for 6 months
B. Return to sports immediately if no fever is present
C. Bed rest for 2 months is mandatory
PRIMARY CARE STUDY GUIDE
QUESTIONS AND ANSWERS WITH
VERIFIED SOLUTIONS 2026/2027
UPDATE. JUST RELEASED
1. A 4-year-old child presents with a ‘barking’ cough and inspiratory stridor that worsens at
night. The most likely diagnosis is Laryngotracheobronchitis. What is the recommended first-
line pharmacological treatment for a mild to moderate case?
A. A single dose of Dexamethasone (0.6 mg/kg)
B. Nebulized Albuterol every 4 hours
C. Oral Amoxicillin 80-90 mg/kg/day
D. Cough suppressants with codeine
Answer: A
Conceptual Explanation: Dexamethasone is the mainstay of treatment for Croup
(Laryngotracheobronchitis) as it reduces airway edema. Antibiotics are not indicated for
this viral illness, and albuterol does not treat the subglottic inflammation.
,2. In the management of Community-Acquired Pneumonia (CAP) in a previously healthy adult
with no recent antibiotic use, which of the following is considered first-line according to
current ATS/IDSA guidelines?
A. Ciprofloxacin
B. Amoxicillin or Doxycycline
C. Vancomycin
D. Trimethoprim-Sulfamethoxazole
Answer: B
Conceptual Explanation: For healthy outpatients without comorbidities or risk factors for
MRSA/P. aeruginosa, Amoxicillin (1g TID) or Doxycycline are preferred first-line options.
3. A patient presents with a ‘herald patch’ followed by a generalized Christmas-tree pattern
rash on the trunk. What is the most likely diagnosis?
A. Tinea Corporis
B. Pityriasis Rosea
C. Secondary Syphilis
D. Guttate Psoriasis
Answer: B
, Conceptual Explanation: Pityriasis Rosea typically begins with a herald patch (a single 2-
10 cm oval lesion) followed by smaller lesions in a Christmas-tree distribution along skin
cleavage lines.
4. Which of the following physical exam findings is most suggestive of Acute Otitis Media
(AOM) rather than Otitis Media with Effusion (OME)?
A. Fluid levels behind the tympanic membrane
B. Bubbles in the middle ear space
C. Poor mobility on pneumatic otoscopy
D. Bulging of the tympanic membrane
Answer: D
Conceptual Explanation: Bulging of the tympanic membrane is the most specific sign of
acute inflammation and pressure indicative of AOM. OME is characterized by fluid without
signs of acute infection.
5. A 15-year-old athlete presents with a sore throat, cervical lymphadenopathy, and extreme
fatigue. A Monospot test is positive. What is the most important education regarding physical
activity?
A. Avoid all aerobic exercise for 6 months
B. Return to sports immediately if no fever is present
C. Bed rest for 2 months is mandatory
