ACAS - 5.3 Course (Questions + Answers) Graded A+
Course
ACAS - Associate of the Casualty Actuarial Society
1. Question: What is the most appropriate first-line diagnostic test for a
patient presenting with acute dyspnea?
Answer: Chest X-ray (CXR).
Rationale: A chest X-ray is the first-line imaging tool for evaluating acute dyspnea, as it
helps to identify common causes such as pneumonia, pneumothorax, heart failure, and pleural
effusion. More advanced imaging like a CT scan can be used if the CXR is inconclusive.
2. Question: What is the expected lung sound in a patient with acute
bronchitis?
Answer: Wheezing.
Rationale: Wheezing is common in acute bronchitis due to inflammation and narrowing of
the airways, causing turbulent airflow. It is a high-pitched, musical sound typically heard on
expiration.
3. Question: In a diabetic patient presenting with foot ulcers, which of the
following is most indicative of osteomyelitis?
a) Foul-smelling drainage
b) Nonhealing wound
c) Fever
d) Visible bone in the wound base
Answer: d) Visible bone in the wound base.
Rationale: The presence of bone in the wound base is highly suggestive of osteomyelitis.
Diabetic foot ulcers are at high risk for infection, and when bone is exposed, the likelihood of
osteomyelitis is significantly increased.
4. Question: What is the gold standard for diagnosing obstructive sleep apnea
(OSA)?
Answer: Polysomnography (sleep study).
,Rationale: Polysomnography is the gold standard diagnostic tool for obstructive sleep apnea
as it monitors multiple physiological parameters, including respiratory effort, airflow, oxygen
levels, and sleep stages, providing a comprehensive evaluation of sleep disturbances.
5. Question: Which clinical finding is most commonly associated with mitral
valve prolapse?
a) Diastolic murmur
b) Mid-systolic click
c) Continuous murmur
d) S3 gallop
Answer: b) Mid-systolic click.
Rationale: A mid-systolic click is the classic auscultatory finding in mitral valve prolapse,
caused by the sudden tensing of the mitral valve leaflets and chordae tendineae during
systole.
6. Question: Which of the following physical examination findings is
characteristic of hyperthyroidism?
a) Bradycardia
b) Cold, dry skin
c) Exophthalmos
d) Decreased reflexes
Answer: c) Exophthalmos.
Rationale: Exophthalmos, or bulging of the eyes, is commonly associated with Graves’
disease, a cause of hyperthyroidism. It results from inflammation and swelling of the tissues
around the eyes.
7. Question: What is the recommended management for a patient with a
small, uncomplicated pneumothorax?
Answer: Observation with supplemental oxygen.
Rationale: A small, uncomplicated pneumothorax can often be managed conservatively with
observation and supplemental oxygen, which helps reabsorb the air in the pleural space.
Surgical intervention is reserved for larger or recurrent pneumothoraxes.
, 8. Question: In a patient presenting with left lower quadrant abdominal pain,
fever, and diarrhea, which diagnosis is most likely?
a) Appendicitis
b) Cholecystitis
c) Diverticulitis
d) Peptic ulcer disease
Answer: c) Diverticulitis.
Rationale: Diverticulitis typically presents with left lower quadrant pain, fever, and changes
in bowel habits, such as diarrhea or constipation. Appendicitis typically presents with right
lower quadrant pain.
9. Question: What is the most likely cause of a sudden onset of unilateral
facial drooping that spares the forehead?
a) Bell's palsy
b) Stroke
c) Multiple sclerosis
d) Myasthenia gravis
Answer: b) Stroke.
Rationale: In a stroke, facial drooping often spares the forehead due to the bilateral cortical
innervation of the upper face. In Bell’s palsy, both the forehead and lower face are typically
affected.
10. Question: A 65-year-old male presents with chest pain that worsens when
lying flat and improves when sitting forward. What is the most likely
diagnosis?
a) Myocardial infarction
b) Gastroesophageal reflux disease (GERD)
c) Pulmonary embolism
d) Pericarditis
Answer: d) Pericarditis.
Rationale: Pericarditis presents with sharp chest pain that is relieved by sitting forward and
worsened by lying flat, due to the pressure on the inflamed pericardium. Myocardial
infarction typically presents with constant chest pain, not positionally related.
11. Question: Which cranial nerve is tested by asking the patient to stick out
their tongue?
Course
ACAS - Associate of the Casualty Actuarial Society
1. Question: What is the most appropriate first-line diagnostic test for a
patient presenting with acute dyspnea?
Answer: Chest X-ray (CXR).
Rationale: A chest X-ray is the first-line imaging tool for evaluating acute dyspnea, as it
helps to identify common causes such as pneumonia, pneumothorax, heart failure, and pleural
effusion. More advanced imaging like a CT scan can be used if the CXR is inconclusive.
2. Question: What is the expected lung sound in a patient with acute
bronchitis?
Answer: Wheezing.
Rationale: Wheezing is common in acute bronchitis due to inflammation and narrowing of
the airways, causing turbulent airflow. It is a high-pitched, musical sound typically heard on
expiration.
3. Question: In a diabetic patient presenting with foot ulcers, which of the
following is most indicative of osteomyelitis?
a) Foul-smelling drainage
b) Nonhealing wound
c) Fever
d) Visible bone in the wound base
Answer: d) Visible bone in the wound base.
Rationale: The presence of bone in the wound base is highly suggestive of osteomyelitis.
Diabetic foot ulcers are at high risk for infection, and when bone is exposed, the likelihood of
osteomyelitis is significantly increased.
4. Question: What is the gold standard for diagnosing obstructive sleep apnea
(OSA)?
Answer: Polysomnography (sleep study).
,Rationale: Polysomnography is the gold standard diagnostic tool for obstructive sleep apnea
as it monitors multiple physiological parameters, including respiratory effort, airflow, oxygen
levels, and sleep stages, providing a comprehensive evaluation of sleep disturbances.
5. Question: Which clinical finding is most commonly associated with mitral
valve prolapse?
a) Diastolic murmur
b) Mid-systolic click
c) Continuous murmur
d) S3 gallop
Answer: b) Mid-systolic click.
Rationale: A mid-systolic click is the classic auscultatory finding in mitral valve prolapse,
caused by the sudden tensing of the mitral valve leaflets and chordae tendineae during
systole.
6. Question: Which of the following physical examination findings is
characteristic of hyperthyroidism?
a) Bradycardia
b) Cold, dry skin
c) Exophthalmos
d) Decreased reflexes
Answer: c) Exophthalmos.
Rationale: Exophthalmos, or bulging of the eyes, is commonly associated with Graves’
disease, a cause of hyperthyroidism. It results from inflammation and swelling of the tissues
around the eyes.
7. Question: What is the recommended management for a patient with a
small, uncomplicated pneumothorax?
Answer: Observation with supplemental oxygen.
Rationale: A small, uncomplicated pneumothorax can often be managed conservatively with
observation and supplemental oxygen, which helps reabsorb the air in the pleural space.
Surgical intervention is reserved for larger or recurrent pneumothoraxes.
, 8. Question: In a patient presenting with left lower quadrant abdominal pain,
fever, and diarrhea, which diagnosis is most likely?
a) Appendicitis
b) Cholecystitis
c) Diverticulitis
d) Peptic ulcer disease
Answer: c) Diverticulitis.
Rationale: Diverticulitis typically presents with left lower quadrant pain, fever, and changes
in bowel habits, such as diarrhea or constipation. Appendicitis typically presents with right
lower quadrant pain.
9. Question: What is the most likely cause of a sudden onset of unilateral
facial drooping that spares the forehead?
a) Bell's palsy
b) Stroke
c) Multiple sclerosis
d) Myasthenia gravis
Answer: b) Stroke.
Rationale: In a stroke, facial drooping often spares the forehead due to the bilateral cortical
innervation of the upper face. In Bell’s palsy, both the forehead and lower face are typically
affected.
10. Question: A 65-year-old male presents with chest pain that worsens when
lying flat and improves when sitting forward. What is the most likely
diagnosis?
a) Myocardial infarction
b) Gastroesophageal reflux disease (GERD)
c) Pulmonary embolism
d) Pericarditis
Answer: d) Pericarditis.
Rationale: Pericarditis presents with sharp chest pain that is relieved by sitting forward and
worsened by lying flat, due to the pressure on the inflamed pericardium. Myocardial
infarction typically presents with constant chest pain, not positionally related.
11. Question: Which cranial nerve is tested by asking the patient to stick out
their tongue?
