COMSAE PHASE 1 FORM 115 PRACTICE EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
Core Domains:
Biostatistics and Epidemiology
Cardiovascular System
Endocrine System
Ethics and Professional Standards
Gastrointestinal System
Musculoskeletal System
Neurology
Psychiatry and Behavioral Medicine
Pulmonary System
Renal and Genitourinary System
Introduction
This comprehensive examination is meticulously designed to assess a candidate's
readiness for the COMSAE Phase 1, evaluating foundational medical knowledge
and its application in a clinical context. The assessment covers a broad spectrum of
core biomedical and clinical science domains, challenging examinees to integrate
basic science principles with patient care scenarios. Employing a multiple-choice
question format, this practice exam emphasizes critical thinking, diagnostic
reasoning, and the application of evidence-based medicine. Each question is crafted
to mirror the complexity of the actual board examination, requiring not only recall
of facts but also the ability to make sound clinical judgments and ethical decisions
in realistic, complex situations. This tool serves as an essential benchmark for
identifying strengths and areas requiring further study.
Section One: Questions 1 - 100
1. A 72-year-old male with a history of hypertension and type 2 diabetes
presents with a 2-hour history of acute, severe chest pain that radiates to his
jaw. His ECG shows ST-segment elevation in leads V1-V4. His initial troponin I is
elevated. Which of the following is the most appropriate immediate
,management strategy?
A. Administer sublingual nitroglycerin and observe.
B. Begin a continuous heparin infusion and admit for medical management.
C. Proceed with immediate percutaneous coronary intervention (PCI).
D. Administer thrombolytic therapy with tissue plasminogen activator (tPA).
🟢 C. Proceed with immediate percutaneous coronary intervention (PCI).
🔴 Explanation: The patient is presenting with an ST-segment elevation
myocardial infarction (STEMI). The standard of care for STEMI is rapid reperfusion.
Primary PCI is the preferred method if it can be performed promptly by an
experienced team, as it is more effective than thrombolytics in restoring coronary
blood flow. While heparin and antiplatelet therapy are part of the management,
they are not the definitive immediate treatment.
2. A 45-year-old female presents with a chief complaint of progressive fatigue,
weight gain, and cold intolerance over the past several months. On physical
examination, she has a bradycardia of 52 bpm, dry skin, and a non-pitting
edema in her lower extremities. Laboratory studies show a markedly elevated
TSH and a low free T4. Which of the following is the most likely underlying
etiology of this patient's condition?
A. Graves' disease
B. Pituitary adenoma
C. Autoimmune destruction of the thyroid gland
D. Iodine deficiency
🟢 C. Autoimmune destruction of the thyroid gland.
🔴 Explanation: The patient's presentation of fatigue, weight gain, cold
intolerance, bradycardia, and laboratory findings of elevated TSH and low free T4
are classic for primary hypothyroidism. The most common cause of primary
hypothyroidism in developed countries is Hashimoto's thyroiditis, an autoimmune
disorder where the body's immune system attacks and destroys the thyroid gland.
Iodine deficiency is a common cause globally but less so in the developed world.
3. Which of the following best describes the mechanism of action of selective
serotonin reuptake inhibitors (SSRIs) in the treatment of major depressive
disorder?
A. Blocking the reuptake of both serotonin and norepinephrine at the synaptic
cleft.
B. Irreversibly inhibiting monoamine oxidase, preventing the breakdown of
neurotransmitters.
,C. Antagonizing dopamine receptors in the mesolimbic pathway.
D. Selectively inhibiting the reuptake of serotonin, increasing its concentration in
the synapse.
🟢 D. Selectively inhibiting the reuptake of serotonin, increasing its concentration
in the synapse.
🔴 Explanation: SSRIs, such as fluoxetine and sertraline, work by specifically
blocking the serotonin transporter protein on the presynaptic neuron. This
inhibition prevents the reuptake of serotonin from the synaptic cleft, leading to
an increased concentration of serotonin available to bind to postsynaptic
receptors. This mechanism is central to their therapeutic effect in treating
depression and anxiety.
4. A 28-year-old male is evaluated for a painful, swollen right knee following a
twisting injury during a basketball game. The physician performs a physical
exam and notes an effusion. A joint aspiration reveals a grossly bloody fluid.
Which of the following is the most likely diagnosis for the type of effusion
present?
A. Transudative effusion
B. Exudative effusion
C. Hemarthrosis
D. Purulent effusion
🟢 C. Hemarthrosis.
🔴 Explanation: The presence of grossly bloody fluid in a joint aspiration indicates
a hemarthrosis. This is most commonly caused by a traumatic injury that leads to
bleeding within the joint space. In the context of an acute knee injury, a
hemarthrosis is highly suggestive of an anterior cruciate ligament (ACL) tear or a
fracture. A transudative effusion would be clear and yellow, an exudative effusion
is inflammatory, and a purulent effusion is infected (pus).
5. A 6-year-old child is brought to the clinic by his parents for a routine well-
child visit. The parents report that he has been having difficulty paying
attention in school, is easily distracted, and frequently fidgets. These symptoms
have been present for the past year and occur both at home and at school. The
teacher reports that he interrupts others and has trouble waiting his turn.
Which of the following is the most appropriate initial step in management for
this child?
A. Immediately start a trial of methylphenidate.
B. Recommend a comprehensive behavioral and psychological evaluation.
, C. Suggest a trial of a gluten-free diet.
D. Reassure the parents that this is normal behavior for his age.
🟢 B. Recommend a comprehensive behavioral and psychological evaluation.
🔴 Explanation: The child's presentation is consistent with possible Attention-
Deficit/Hyperactivity Disorder (ADHD). Before initiating pharmacotherapy, the
standard of care is to perform a comprehensive evaluation that includes a
detailed history from parents and teachers, and a thorough psychological and
behavioral assessment to confirm the diagnosis and rule out other conditions.
This evaluation is crucial for accurate diagnosis and treatment planning.
6. A 58-year-old male with a history of chronic obstructive pulmonary disease
(COPD) is seen in the clinic for worsening shortness of breath and a productive
cough. On physical examination, he has an increased anteroposterior (AP) chest
diameter and distant breath sounds. Which of the following arterial blood gas
(ABG) findings is most consistent with his underlying disease?
A. pH 7.35, PaCO2 48 mmHg, PaO2 70 mmHg, HCO3- 28 mEq/L
B. pH 7.40, PaCO2 40 mmHg, PaO2 95 mmHg, HCO3- 24 mEq/L
C. pH 7.50, PaCO2 30 mmHg, PaO2 80 mmHg, HCO3- 22 mEq/L
D. pH 7.25, PaCO2 30 mmHg, PaO2 60 mmHg, HCO3- 18 mEq/L
🟢 A. pH 7.35, PaCO2 48 mmHg, PaO2 70 mmHg, HCO3- 28 mEq/L.
🔴 Explanation: COPD is a disease characterized by chronic airflow limitation,
leading to ventilation-perfusion mismatch and hypercapnia (elevated PaCO2). The
ABG shown in option A demonstrates a compensated respiratory acidosis: pH is
slightly low (7.35, reflecting acidosis), PaCO2 is elevated (48 mmHg, the primary
respiratory disturbance), and HCO3- is elevated (28 mEq/L, indicating renal
compensation). The PaO2 is low (70 mmHg), consistent with hypoxemia often
seen in COPD.
7. A 32-year-old woman presents with acute pelvic pain and vaginal discharge.
She is sexually active with multiple partners and uses oral contraceptives.
Which of the following statements regarding the legal requirements of
reporting sexually transmitted infections (STIs) in this case is most accurate?
A. The physician must obtain the patient's written consent before reporting any
STI to public health authorities.
B. The physician is legally required to report the diagnosis of gonorrhea and
chlamydia to the state health department.
C. Reporting is only required if the patient is under the age of 18.
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE
Core Domains:
Biostatistics and Epidemiology
Cardiovascular System
Endocrine System
Ethics and Professional Standards
Gastrointestinal System
Musculoskeletal System
Neurology
Psychiatry and Behavioral Medicine
Pulmonary System
Renal and Genitourinary System
Introduction
This comprehensive examination is meticulously designed to assess a candidate's
readiness for the COMSAE Phase 1, evaluating foundational medical knowledge
and its application in a clinical context. The assessment covers a broad spectrum of
core biomedical and clinical science domains, challenging examinees to integrate
basic science principles with patient care scenarios. Employing a multiple-choice
question format, this practice exam emphasizes critical thinking, diagnostic
reasoning, and the application of evidence-based medicine. Each question is crafted
to mirror the complexity of the actual board examination, requiring not only recall
of facts but also the ability to make sound clinical judgments and ethical decisions
in realistic, complex situations. This tool serves as an essential benchmark for
identifying strengths and areas requiring further study.
Section One: Questions 1 - 100
1. A 72-year-old male with a history of hypertension and type 2 diabetes
presents with a 2-hour history of acute, severe chest pain that radiates to his
jaw. His ECG shows ST-segment elevation in leads V1-V4. His initial troponin I is
elevated. Which of the following is the most appropriate immediate
,management strategy?
A. Administer sublingual nitroglycerin and observe.
B. Begin a continuous heparin infusion and admit for medical management.
C. Proceed with immediate percutaneous coronary intervention (PCI).
D. Administer thrombolytic therapy with tissue plasminogen activator (tPA).
🟢 C. Proceed with immediate percutaneous coronary intervention (PCI).
🔴 Explanation: The patient is presenting with an ST-segment elevation
myocardial infarction (STEMI). The standard of care for STEMI is rapid reperfusion.
Primary PCI is the preferred method if it can be performed promptly by an
experienced team, as it is more effective than thrombolytics in restoring coronary
blood flow. While heparin and antiplatelet therapy are part of the management,
they are not the definitive immediate treatment.
2. A 45-year-old female presents with a chief complaint of progressive fatigue,
weight gain, and cold intolerance over the past several months. On physical
examination, she has a bradycardia of 52 bpm, dry skin, and a non-pitting
edema in her lower extremities. Laboratory studies show a markedly elevated
TSH and a low free T4. Which of the following is the most likely underlying
etiology of this patient's condition?
A. Graves' disease
B. Pituitary adenoma
C. Autoimmune destruction of the thyroid gland
D. Iodine deficiency
🟢 C. Autoimmune destruction of the thyroid gland.
🔴 Explanation: The patient's presentation of fatigue, weight gain, cold
intolerance, bradycardia, and laboratory findings of elevated TSH and low free T4
are classic for primary hypothyroidism. The most common cause of primary
hypothyroidism in developed countries is Hashimoto's thyroiditis, an autoimmune
disorder where the body's immune system attacks and destroys the thyroid gland.
Iodine deficiency is a common cause globally but less so in the developed world.
3. Which of the following best describes the mechanism of action of selective
serotonin reuptake inhibitors (SSRIs) in the treatment of major depressive
disorder?
A. Blocking the reuptake of both serotonin and norepinephrine at the synaptic
cleft.
B. Irreversibly inhibiting monoamine oxidase, preventing the breakdown of
neurotransmitters.
,C. Antagonizing dopamine receptors in the mesolimbic pathway.
D. Selectively inhibiting the reuptake of serotonin, increasing its concentration in
the synapse.
🟢 D. Selectively inhibiting the reuptake of serotonin, increasing its concentration
in the synapse.
🔴 Explanation: SSRIs, such as fluoxetine and sertraline, work by specifically
blocking the serotonin transporter protein on the presynaptic neuron. This
inhibition prevents the reuptake of serotonin from the synaptic cleft, leading to
an increased concentration of serotonin available to bind to postsynaptic
receptors. This mechanism is central to their therapeutic effect in treating
depression and anxiety.
4. A 28-year-old male is evaluated for a painful, swollen right knee following a
twisting injury during a basketball game. The physician performs a physical
exam and notes an effusion. A joint aspiration reveals a grossly bloody fluid.
Which of the following is the most likely diagnosis for the type of effusion
present?
A. Transudative effusion
B. Exudative effusion
C. Hemarthrosis
D. Purulent effusion
🟢 C. Hemarthrosis.
🔴 Explanation: The presence of grossly bloody fluid in a joint aspiration indicates
a hemarthrosis. This is most commonly caused by a traumatic injury that leads to
bleeding within the joint space. In the context of an acute knee injury, a
hemarthrosis is highly suggestive of an anterior cruciate ligament (ACL) tear or a
fracture. A transudative effusion would be clear and yellow, an exudative effusion
is inflammatory, and a purulent effusion is infected (pus).
5. A 6-year-old child is brought to the clinic by his parents for a routine well-
child visit. The parents report that he has been having difficulty paying
attention in school, is easily distracted, and frequently fidgets. These symptoms
have been present for the past year and occur both at home and at school. The
teacher reports that he interrupts others and has trouble waiting his turn.
Which of the following is the most appropriate initial step in management for
this child?
A. Immediately start a trial of methylphenidate.
B. Recommend a comprehensive behavioral and psychological evaluation.
, C. Suggest a trial of a gluten-free diet.
D. Reassure the parents that this is normal behavior for his age.
🟢 B. Recommend a comprehensive behavioral and psychological evaluation.
🔴 Explanation: The child's presentation is consistent with possible Attention-
Deficit/Hyperactivity Disorder (ADHD). Before initiating pharmacotherapy, the
standard of care is to perform a comprehensive evaluation that includes a
detailed history from parents and teachers, and a thorough psychological and
behavioral assessment to confirm the diagnosis and rule out other conditions.
This evaluation is crucial for accurate diagnosis and treatment planning.
6. A 58-year-old male with a history of chronic obstructive pulmonary disease
(COPD) is seen in the clinic for worsening shortness of breath and a productive
cough. On physical examination, he has an increased anteroposterior (AP) chest
diameter and distant breath sounds. Which of the following arterial blood gas
(ABG) findings is most consistent with his underlying disease?
A. pH 7.35, PaCO2 48 mmHg, PaO2 70 mmHg, HCO3- 28 mEq/L
B. pH 7.40, PaCO2 40 mmHg, PaO2 95 mmHg, HCO3- 24 mEq/L
C. pH 7.50, PaCO2 30 mmHg, PaO2 80 mmHg, HCO3- 22 mEq/L
D. pH 7.25, PaCO2 30 mmHg, PaO2 60 mmHg, HCO3- 18 mEq/L
🟢 A. pH 7.35, PaCO2 48 mmHg, PaO2 70 mmHg, HCO3- 28 mEq/L.
🔴 Explanation: COPD is a disease characterized by chronic airflow limitation,
leading to ventilation-perfusion mismatch and hypercapnia (elevated PaCO2). The
ABG shown in option A demonstrates a compensated respiratory acidosis: pH is
slightly low (7.35, reflecting acidosis), PaCO2 is elevated (48 mmHg, the primary
respiratory disturbance), and HCO3- is elevated (28 mEq/L, indicating renal
compensation). The PaO2 is low (70 mmHg), consistent with hypoxemia often
seen in COPD.
7. A 32-year-old woman presents with acute pelvic pain and vaginal discharge.
She is sexually active with multiple partners and uses oral contraceptives.
Which of the following statements regarding the legal requirements of
reporting sexually transmitted infections (STIs) in this case is most accurate?
A. The physician must obtain the patient's written consent before reporting any
STI to public health authorities.
B. The physician is legally required to report the diagnosis of gonorrhea and
chlamydia to the state health department.
C. Reporting is only required if the patient is under the age of 18.
