Surface anatomy US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Surface anatomy. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Surface anatomy US Medical PG Question 1: A research team develops a new monoclonal antibody checkpoint inhibitor for advanced melanoma that has shown promise in animal studies as well as high efficacy and low toxicity in early phase human clinical trials. The research team would now like to compare this drug to existing standard of care immunotherapy for advanced melanoma. The research team decides to conduct a non-randomized study where the novel drug will be offered to patients who are deemed to be at risk for toxicity with the current standard of care immunotherapy, while patients without such risk factors will receive the standard treatment. Which of the following best describes the level of evidence that this study can offer?
- A. Level 1
- B. Level 3 (Correct Answer)
- C. Level 5
- D. Level 4
- E. Level 2
Surface anatomy Explanation: ***Level 3***
- A **non-randomized controlled trial** like the one described, where patient assignment to treatment groups is based on specific characteristics (risk of toxicity), falls into Level 3 evidence.
- This level typically includes **non-randomized controlled trials** and **well-designed cohort studies** with comparison groups, which are prone to selection bias and confounding.
- The study compares two treatments but lacks randomization, making it Level 3 evidence.
*Level 1*
- Level 1 evidence is the **highest level of evidence**, derived from **systematic reviews and meta-analyses** of multiple well-designed randomized controlled trials or large, high-quality randomized controlled trials.
- The described study is explicitly stated as non-randomized, ruling out Level 1.
*Level 2*
- Level 2 evidence involves at least one **well-designed randomized controlled trial** (RCT) or **systematic reviews** of randomized trials.
- The current study is *non-randomized*, which means it cannot be classified as Level 2 evidence, as randomization is a key criterion for this level.
*Level 4*
- Level 4 evidence includes **case series**, **case-control studies**, and **poorly designed cohort or case-control studies**.
- While the study is non-randomized, it is a controlled comparative trial rather than a case series or retrospective case-control study, placing it at Level 3.
*Level 5*
- Level 5 evidence is the **lowest level of evidence**, typically consisting of **expert opinion** without explicit critical appraisal, or based on physiology, bench research, or animal studies.
- While the drug was initially tested in animal studies, the current human comparative study offers a higher level of evidence than expert opinion or preclinical data.
Surface anatomy US Medical PG Question 2: A 42-year-old woman presents to the physician with symptoms of vague abdominal pain and bloating for several months. Test results indicate that she has ovarian cancer. Her physician attempts to reach her by phone multiple times but cannot reach her. Next of kin numbers are in her chart. According to HIPAA regulations, who should be the primary person the doctor discusses this information with?
- A. The patient's brother
- B. The patient's husband
- C. The patient's daughter
- D. All of the options
- E. The patient (Correct Answer)
Surface anatomy Explanation: ***The patient***
- Under **HIPAA**, the patient has the **right to privacy** regarding their protected health information (PHI). Therefore, the physician must make all reasonable attempts to contact the patient directly to convey their diagnosis.
- Sharing sensitive medical information like a cancer diagnosis with anyone other than the patient, without their explicit consent, would be a **violation of HIPAA regulations**.
*The patient's brother*
- The patient's brother is not automatically authorized to receive her medical information, even if listed as **next of kin**, without the patient's explicit consent or a documented **healthcare power of attorney**.
- Discussing the diagnosis with the brother without the patient's direct consent would be a **breach of patient confidentiality**.
*The patient's husband*
- Even a spouse does not automatically have the right to access a patient's **PHI** without the patient's express permission, according to **HIPAA**.
- While often a trusted contact, without explicit consent, revealing the diagnosis to the husband would still violate the patient's **privacy rights**.
*The patient's daughter*
- Similar to other family members, the patient's daughter is not legally entitled to receive her mother's confidential medical information without explicit authorization or a medical **power of attorney**.
- The physician's primary responsibility is to the patient herself, ensuring her **privacy** is maintained.
*All of the options*
- According to **HIPAA**, sharing the patient's diagnosis with any family member without her explicit consent would be a **breach of confidentiality**.
- This option incorrectly assumes that **next of kin** automatically have the right to receive sensitive medical information.
Surface anatomy US Medical PG Question 3: A 41-year-old woman is brought to the emergency department with the acute-onset of severe abdominal pain for the past 2 hours. She has a history of frequent episodes of vague abdominal pain, but they have never been this severe. Every time she has had pain, it would resolve after eating a meal. Her past medical history is otherwise insignificant. Her vital signs include: blood pressure 121/77 mm Hg, pulse 91/min, respiratory rate 21/min, and temperature 37°C (98.6°F). On examination, her abdomen is flat and rigid. Which of the following is the next best step in evaluating this patient’s discomfort and stomach pain by physical exam?
- A. Auscultate the abdomen (Correct Answer)
- B. Elicit shifting dullness of the abdomen
- C. Perform light palpation at the point of maximal pain
- D. Attempt to perform a deep, slow palpation with quick release
- E. Percuss the point of maximal pain
Surface anatomy Explanation: ***Auscultate the abdomen***
- Auscultation is typically performed first in an abdominal exam to assess **bowel sounds** and identify any bruits, as palpation and percussion can alter bowel sound characteristics.
- While the patient has **peritonitis (rigid abdomen)**, initial auscultation is still the logical starting point for a comprehensive physical examination.
*Elicit shifting dullness of the abdomen*
- **Shifting dullness** is used to detect **ascites**, which is not the primary concern given the acute onset of severe pain and rigid abdomen.
- This maneuver typically comes later in the abdominal examination, after initial auscultation and palpation.
*Perform light palpation at the point of maximal pain*
- Given the patient's **rigid abdomen**, suggesting peritonitis, performing palpation (even light) at the point of maximal pain could cause significant discomfort and is secondary to initial auscultation in the *sequence* of physical exam.
- While palpation is crucial, the standard order in an abdominal exam begins with auscultation to ensure unchanged bowel sounds.
*Attempt to perform a deep, slow palpation with quick release*
- This describes evaluating for **rebound tenderness**, a sign of peritonitis, which is indeed suggested by the rigid abdomen.
- However, just like light palpation, this maneuver is performed *after* auscultation and is likely to cause significant pain in a patient with a rigid abdomen, making it not the very next best step.
*Percuss the point of maximal pain*
- Percussion is typically used to assess for **gas, fluid, or organ size/tenderness**, but it is performed after auscultation and before deep palpation in a standard abdominal exam.
- In a patient with a **rigid abdomen**, percussion can also elicit severe pain, and it does not precede auscultation in the examination sequence.
Surface anatomy US Medical PG Question 4: A 52-year-old man with stage IV melanoma comes to the physician with his wife for a routine follow-up examination. He was recently diagnosed with new bone and brain metastases despite receiving aggressive chemotherapy but has not disclosed this to his wife. He has given verbal consent to discuss his prognosis with his wife and asks the doctor to inform her of his condition because he does not wish to do so himself. She is tearful and has many questions about his condition. Which of the following would be the most appropriate statement by the physician to begin the interview with the patient's wife?
- A. Have you discussed a living will or goals of care together?
- B. We should talk about how we can manage his symptoms with additional chemotherapy.
- C. Why do you think your husband has not discussed his medical condition with you?
- D. What is your understanding of your husband's current condition? (Correct Answer)
- E. Your husband has end-stage cancer, and his prognosis is poor.
Surface anatomy Explanation: ***What is your understanding of your husband's current condition?***
- This statement initiates the conversation by **assessing the wife's current knowledge** and emotional state, which is crucial for delivering sensitive and appropriate information.
- It allows the physician to tailor the discussion to her specific understanding and concerns, ensuring that information is delivered compassionately and effectively.
*Have you discussed a living will or goals of care together?*
- This question is too abrupt and **premature** as an opening, as the wife is clearly distressed and unaware of the full severity of her husband's condition.
- Discussions about end-of-life planning should only occur after the patient's wife has a clear understanding of the diagnosis and prognosis, and has processed this information.
*Your husband has end-stage cancer, and his prognosis is poor.*
- While factual, this statement is **too blunt and lacks empathy** for an opening, especially given the wife's emotional state and lack of prior knowledge.
- Delivering such devastating news directly without first assessing her understanding or providing context can be traumatic and impede effective communication.
*We should talk about how we can manage his symptoms with additional chemotherapy.*
- This statement implies a focus on further aggressive treatment which may not be appropriate given the **new bone and brain metastases** and aggressive prior chemotherapy, suggesting a limited benefit of more chemotherapy.
- It also **diverts from the primary need to discuss the overall prognosis** and the patient's rapidly declining condition, which the doctor has been asked to convey.
*Why do you think your husband has not discussed his medical condition with you?*
- This question is **accusatory** and places blame on either the patient or the wife, which is inappropriate and unhelpful in a sensitive medical discussion.
- It shifts the focus away from providing medical information and empathy towards a speculative and potentially confrontational topic.
Surface anatomy US Medical PG Question 5: A 78-year-old man is brought in to the emergency department by ambulance after his wife noticed that he began slurring his speech and had developed facial asymmetry during dinner approximately 30 minutes ago. His past medical history is remarkable for hypertension and diabetes. His temperature is 99.1°F (37.3°C), blood pressure is 154/99 mmHg, pulse is 89/min, respirations are 12/min, and oxygen saturation is 98% on room air. Neurologic exam reveals right upper and lower extremity weakness and an asymmetric smile. Which of the following is the next best step in management?
- A. Alteplase
- B. MRI brain
- C. CT head (Correct Answer)
- D. Aspirin
- E. CTA head
Surface anatomy Explanation: ***CT head***
- A **non-contrast CT head** is the immediate priority to differentiate between ischemic and hemorrhagic stroke, which is critical for guiding subsequent treatment decisions.
- Given the patient's acute neurological deficits (slurred speech, facial asymmetry, weakness) and vascular risk factors (hypertension, diabetes), **stroke is highly suspected**, and identifying intracerebral hemorrhage is crucial before considering thrombolytic therapy.
*Alteplase*
- **Alteplase** (tPA) is a thrombolytic agent used for acute ischemic stroke, but its administration is **contraindicated in hemorrhagic stroke**.
- Initiating alteplase without first ruling out hemorrhage with a CT scan could lead to catastrophic bleeding.
*MRI brain*
- While an **MRI brain** can provide more detailed imaging of stroke, it is typically **not the initial imaging modality** in the emergency setting due to longer acquisition times and limited availability, especially when emergent differentiation between ischemic and hemorrhagic stroke is needed.
- Its use is usually reserved for cases where the CT is inconclusive or for later evaluation.
*Aspirin*
- **Aspirin** is an antiplatelet agent used in the management of ischemic stroke, but it should **not be given until a hemorrhagic stroke has been ruled out** via CT head.
- Administering aspirin in the context of an intracerebral hemorrhage could worsen bleeding.
*CTA head*
- A **CT angiography (CTA) head** is used to visualize the cerebral vasculature and identify large vessel occlusions, which can guide thrombectomy decisions in ischemic stroke.
- However, performing a **non-contrast CT head is a prerequisite** to rule out hemorrhage before proceeding with CTA or any other advanced imaging or therapeutic interventions.
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