MSN MCQs with Rationales
1. A male infant weighing 3 kg is born via spontaneous vaginal delivery at 37 weeks’ gestation. His Apgar score is 6/9 at 1 and 5 minutes. The patient is in no apparent distress. Physical examination reveals no anus. What is the most appropriate initial step in this patient’s management?
a. Colostomy
b. Continued observation for 24 hours
c. Intubation and mechanical ventilation
d. Magnetic resonance imaging (MRI) of the abdomen and pelvis
2. Which of the following conditions is characterized by inflammation of the inner lining of the heart chambers and heart valves?
a. Myocardial infarction
b. Endocarditis
c. Pericarditis
d. Aortic stenosis
3. Which organ is most commonly injured in blunt abdominal trauma?
a. Liver
b. Spleen
c. Kidney
d. Pancreas
4. A patient involved in a car crash complains of sharp chest pain worsened by breathing. On examination, you note decreased breath sounds on the left side. What is the likely diagnosis?
a. Pneumothorax
b. Cor Pulmonale
c. Rib fracture
d. Pulmonary contusion
5. According to the START (Simple Triage and Rapid Treatment) system, which color tag indicates a patient with minor injuries?
a. Red
b. Yellow
c. Green
d. Black
6. Which genetic disorder is caused by mutations in the CFTR gene, leading to thick and sticky mucus production?
a. Cystic fibrosis
b. Hemophilia
c. Phenylketonuria (PKU)
d. Tay-Sachs disease
7. A patient with a head injury presents with unequal pupils. What condition should you suspect?
a. Concussion
b. Abrasion
c. Subdural hematoma
d. Skull fracture
MSN MCQ Questions and Answers
8. Which of the following conditions is characterized by chest pain or discomfort due to reduced blood flow to the heart muscle?
a. Atrial fibrillation
b. Angina pectoris
c. Ventricular tachycardia
d. Cardiac tamponade
9. Which chromosomal disorder results from an extra X chromosome in males?
a. Down syndrome
b. Klinefelter syndrome
c. Turner syndrome
d. Cri-du-chat syndrome
10. Which genetic disorder is associated with a repetitive expansion of CGG trinucleotide repeats on the X chromosome?
a. Huntington’s disease
b. Duchenne muscular dystrophy
c. Fragile X syndrome
d. Marfan syndrome
11. In a road traffic accident, what is the first priority in managing a patient with suspected spinal cord injury?
a. Administer pain medication
b. Immobilize the spine
c. Assess airway and breathing
d. Check for external bleeding
12. Which of the following congenital heart defects results in a “blue baby” due to inadequate oxygenation of the blood?
a. Tetralogy of Fallot
b. Patent ductus arteriosus
c. Atrial septal defect
d. Coarctation of the aorta
13. Which genetic disorder is characterized by the absence of an X chromosome in females?
a. Down syndrome
b. Turner syndrome
c. Klinefelter syndrome
d. Fragile X syndrome
14. A patient present with sudden-onset confusion, disorientation, and visual hallucinations. Which organic disorder should be considered?
a. Schizophrenia
b. Bipolar disorder
c. Delirium
d. Obsessive-compulsive disorder
15. Which of the following is a key feature of psychosis?
a. Rational thought processes
b. Emotional stability
c. Impaired perception of reality
d. Adaptive coping strategies
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