06-18-2011, 07:45 AM
13. A 42-year-old woman comes to the physician for an annual pelvic examination and Pap smear. Over the past year, she has had increasing fatigue and difficulty sleeping. She has two children who both attend college. She is currently looking for part-time work outside the home. Her husband has been busy in a new start-up business. Examination shows no abnormalities. Laboratory studies show:
Hemoglobin 15 g/dL
Mean corpuscular volume 95 μm3
Leukocyte count 6000/mm3 with a normal differential
Serum
Na+ 145 mEq/L
Cl– 102 mEq/L
K+ 4.5 mEq/L
HCO3– 25 mEq/L
Urea nitrogen (BUN) 18 mg/dL
Creatinine 1.0 mg/dL
Alkaline phosphatase 70 U/L
Aspartate aminotransferase
(AST, GOT) 22 U/L
Alanine aminotransferase
(ALT, GPT) 19 U/L
γ-Glutamyltransferase
(GGT) 83 U/L
(N=5–50 U/L)
Which of the following is the most likely explanation for this patient's laboratory abnormalities?
A
) Acetaminophen
B
) Alcohol
C
) Diphenhydramine
D
) Estrogen effect
E
) Ibuprofen
25. A healthy 55-year-old man comes for an initial health maintenance examination. His last visit to a physician was over 10 years ago. He does not smoke and drinks only on social occasions. Examination shows no abnormalities. Which of the following immunizations should be administered?
A
) Hepatitis A vaccine
B
) Influenza virus vaccine
C
) Measles-mumps-rubella vaccine
D
) Pneumococcal vaccine
E
) Diphtheria-tetanus toxoid
29. A 52-year-old woman with alcoholism comes to the physician after a serum cholesterol level of 290 mg/dL was found on a routine screening. She drinks a pint of vodka daily. She takes captopril for hypertension and glyburide for type 2 diabetes mellitus. She also has intermittent episodes of gout. Fasting serum studies show:
Total cholesterol 252 mg/dL
HDL-cholesterol 80 mg/dL
Triglycerides 300 mg/dL
Glucose 118 mg/dL
Thyroid-stimulating hormone 4.5 μU/mL
Which of the following is the most appropriate next step in management?
A
) Alcohol cessation
B
) Better control of diabetes
C
) Switch from captopril to calcium-channel blocking agent therapy
D
) Gemfibrozil therapy
E
) Thyroid replacement therapy
15. For 8 weeks, a 52-year-old man with a 5-year history of type 2 diabetes mellitus has had deep burning pain in the ball of his right foot and big toe when the foot is raised above chest level. He also has cramping in his right calf when he walks more than 50 feet. He has smoked two packs of cigarettes daily for 30 years. Femoral pulses are palpable; pedal pulses are absent. Which of the following is the most likely diagnosis?
A
) Aortoiliac stenosis
B
) Femoral popliteal stenosis
C
) Mononeuropathy
D
) Vasculitis
E
) Venous stasis
16. A 1-year study of a new drug to treat hypertension is conducted. One hundred patients with hypertension are enrolled; 50 patients are given the new drug and another 50 patients are given hydrochlorothiazide. All patients completed the trial. One noted unexpected effect is increased growth of scalp hair which occurred in those taking the new drug, a nonstatistically significant difference (p>0.10). This effect has also been reported in studies of other similar drugs in the new therapeutic class. The investigators of the study concluded that the new drug did not cause hair growth. Which of the following features of this study is most likely to affect the validity of this conclusion?
A
) Differential follow-up
B
) Lead time bias
C
) Length of the study
D
) Sample size
E
) Self-selection
19. A 6-year-old boy is brought to the physician by his mother because of progressive visual loss over the past year. Over the past 2 years, he has had deterioration of his hearing, speech, writing, and intellectual performance. His maternal uncle had similar symptoms. Visual acuity is 20/200 bilaterally. Funduscopic examination shows optic atrophy. His hearing is markedly impaired. There is weakness and spasticity of all extremities. Deep tendon reflexes are extremely hyperactive. Babinski's sign is present bilaterally. On mental status examination, he is not oriented to place, year, month, or the names of his siblings. An MRI of the brain shows marked symmetric white matter disease involving all lobes. Diagnostic studies are most likely to show which of the following?
A
) Abnormally decreased serum cholesterol level
B
) Acanthocytes on blood smear
C
) An excess of very long chain fatty acids
D
) Normal nerve conduction studies
E
) Vitamin E deficiency
27. A 7-year-old girl is brought to the physician in September because of fever and sore throat for 1 day. She is in the third week of second grade. Her temperature is 38.6 C (101.5 F). Examination shows an erythematous pharynx and slightly enlarged tonsils without exudate. There is no significant cervical lymphadenopathy. A rapid test for group A streptococcus is negative. Which of the following is the most appropriate next step in management?
A
) Monospot test
B
) Throat culture
C
) Intramuscular penicillin therapy
D
) Oral erythromycin therapy
E
) Oral penicillin therapy
Hemoglobin 15 g/dL
Mean corpuscular volume 95 μm3
Leukocyte count 6000/mm3 with a normal differential
Serum
Na+ 145 mEq/L
Cl– 102 mEq/L
K+ 4.5 mEq/L
HCO3– 25 mEq/L
Urea nitrogen (BUN) 18 mg/dL
Creatinine 1.0 mg/dL
Alkaline phosphatase 70 U/L
Aspartate aminotransferase
(AST, GOT) 22 U/L
Alanine aminotransferase
(ALT, GPT) 19 U/L
γ-Glutamyltransferase
(GGT) 83 U/L
(N=5–50 U/L)
Which of the following is the most likely explanation for this patient's laboratory abnormalities?
A
) Acetaminophen
B
) Alcohol
C
) Diphenhydramine
D
) Estrogen effect
E
) Ibuprofen
25. A healthy 55-year-old man comes for an initial health maintenance examination. His last visit to a physician was over 10 years ago. He does not smoke and drinks only on social occasions. Examination shows no abnormalities. Which of the following immunizations should be administered?
A
) Hepatitis A vaccine
B
) Influenza virus vaccine
C
) Measles-mumps-rubella vaccine
D
) Pneumococcal vaccine
E
) Diphtheria-tetanus toxoid
29. A 52-year-old woman with alcoholism comes to the physician after a serum cholesterol level of 290 mg/dL was found on a routine screening. She drinks a pint of vodka daily. She takes captopril for hypertension and glyburide for type 2 diabetes mellitus. She also has intermittent episodes of gout. Fasting serum studies show:
Total cholesterol 252 mg/dL
HDL-cholesterol 80 mg/dL
Triglycerides 300 mg/dL
Glucose 118 mg/dL
Thyroid-stimulating hormone 4.5 μU/mL
Which of the following is the most appropriate next step in management?
A
) Alcohol cessation
B
) Better control of diabetes
C
) Switch from captopril to calcium-channel blocking agent therapy
D
) Gemfibrozil therapy
E
) Thyroid replacement therapy
15. For 8 weeks, a 52-year-old man with a 5-year history of type 2 diabetes mellitus has had deep burning pain in the ball of his right foot and big toe when the foot is raised above chest level. He also has cramping in his right calf when he walks more than 50 feet. He has smoked two packs of cigarettes daily for 30 years. Femoral pulses are palpable; pedal pulses are absent. Which of the following is the most likely diagnosis?
A
) Aortoiliac stenosis
B
) Femoral popliteal stenosis
C
) Mononeuropathy
D
) Vasculitis
E
) Venous stasis
16. A 1-year study of a new drug to treat hypertension is conducted. One hundred patients with hypertension are enrolled; 50 patients are given the new drug and another 50 patients are given hydrochlorothiazide. All patients completed the trial. One noted unexpected effect is increased growth of scalp hair which occurred in those taking the new drug, a nonstatistically significant difference (p>0.10). This effect has also been reported in studies of other similar drugs in the new therapeutic class. The investigators of the study concluded that the new drug did not cause hair growth. Which of the following features of this study is most likely to affect the validity of this conclusion?
A
) Differential follow-up
B
) Lead time bias
C
) Length of the study
D
) Sample size
E
) Self-selection
19. A 6-year-old boy is brought to the physician by his mother because of progressive visual loss over the past year. Over the past 2 years, he has had deterioration of his hearing, speech, writing, and intellectual performance. His maternal uncle had similar symptoms. Visual acuity is 20/200 bilaterally. Funduscopic examination shows optic atrophy. His hearing is markedly impaired. There is weakness and spasticity of all extremities. Deep tendon reflexes are extremely hyperactive. Babinski's sign is present bilaterally. On mental status examination, he is not oriented to place, year, month, or the names of his siblings. An MRI of the brain shows marked symmetric white matter disease involving all lobes. Diagnostic studies are most likely to show which of the following?
A
) Abnormally decreased serum cholesterol level
B
) Acanthocytes on blood smear
C
) An excess of very long chain fatty acids
D
) Normal nerve conduction studies
E
) Vitamin E deficiency
27. A 7-year-old girl is brought to the physician in September because of fever and sore throat for 1 day. She is in the third week of second grade. Her temperature is 38.6 C (101.5 F). Examination shows an erythematous pharynx and slightly enlarged tonsils without exudate. There is no significant cervical lymphadenopathy. A rapid test for group A streptococcus is negative. Which of the following is the most appropriate next step in management?
A
) Monospot test
B
) Throat culture
C
) Intramuscular penicillin therapy
D
) Oral erythromycin therapy
E
) Oral penicillin therapy