Final Exam: SCI 225 / SCI225
(Latest ) Pathophysiology
| Questions & Answers 100%
Correct - Nightingale
Question:
Which of the following is the most likely diagnosis based on these lab
findings?
Answer:
PCOS
PCOS is commonly associated with:
Elevated serum testosterone
Abnormal LH:FSH ratios
Insulin resistance (indicated by the elevated fasting insulin level).
These lab findings, combined with the patient's symptoms of irregular
periods, hirsutism, and difficulty with weight loss, strongly point to PCOS.
,Question:
Which of the following is a typical sign of an upper GI bleed?
Answer:
Black, tarry stools (melena)
An upper gastrointestinal (GI) bleed originates from the esophagus, stomach, or
duodenum. A typical sign of an upper GI bleed is melena, which refers to black, tarry
stools. This occurs because blood from an upper GI source is exposed to stomach acid
and digestive enzymes as it passes through the gastrointestinal tract. The breakdown of
hemoglobin in the blood produces compounds like hematin, which give the stool its
characteristic dark color and sticky consistency.
Question:
A 45-year-old man presents with progressive difficulty swallowing, first with
solids and now with liquids. He reports regurgitation of undigested food
and has lost 15 pounds over the past 3 months. Barium swallow shows a
dilated esophagus with a characteristic "bird's beak" appearance at the
gastroesophageal junction. Which of the following is the most likely
diagnosis?
Answer:
Achalasia
Achalasia is a condition where the muscles in the lower part of the esophagus and the
lower esophageal sphincter(LES) fail to relax properly. This causes difficulty swallowing,
regurgitation of undigested food, and weight loss over time. The barium swallow tests
showing a "bird's beak" appearance—where the esophagus is dilated above a tight
LES—is a classic finding for achalasia. These symptoms and imaging results make
achalasia the most likely diagnosis.
, Question:
A 58-year-old alcoholic man presents with severe epigastric pain radiating
to the back, nausea, and vomiting. Laboratory studies show –
Lipase 1200 U/L(normal <60 U/L)
Amylase 450 U/L (normal <100 U/L)
Calcium 7.2 mg/Dl
WBC 16,000/μL.
CT scan shows pancreatic edema with peripancreatic fluid collections.
Which of the following is the best predictor of severe disease in this
patient?
Answer:
hypocalcemia
In acute pancreatitis, hypocalcemia (low blood calcium) is a sign of severe
disease. It happens because the inflamed pancreas releases fat-digesting
enzymes, which breakdown fat in the surrounding tissue. This process
creates fatty acids that bind to calcium, lowering the blood calcium level.
Among the findings, hypocalcemia is a strong indicator of severity and
potential complications, making it the best predictor in this case.
(Latest ) Pathophysiology
| Questions & Answers 100%
Correct - Nightingale
Question:
Which of the following is the most likely diagnosis based on these lab
findings?
Answer:
PCOS
PCOS is commonly associated with:
Elevated serum testosterone
Abnormal LH:FSH ratios
Insulin resistance (indicated by the elevated fasting insulin level).
These lab findings, combined with the patient's symptoms of irregular
periods, hirsutism, and difficulty with weight loss, strongly point to PCOS.
,Question:
Which of the following is a typical sign of an upper GI bleed?
Answer:
Black, tarry stools (melena)
An upper gastrointestinal (GI) bleed originates from the esophagus, stomach, or
duodenum. A typical sign of an upper GI bleed is melena, which refers to black, tarry
stools. This occurs because blood from an upper GI source is exposed to stomach acid
and digestive enzymes as it passes through the gastrointestinal tract. The breakdown of
hemoglobin in the blood produces compounds like hematin, which give the stool its
characteristic dark color and sticky consistency.
Question:
A 45-year-old man presents with progressive difficulty swallowing, first with
solids and now with liquids. He reports regurgitation of undigested food
and has lost 15 pounds over the past 3 months. Barium swallow shows a
dilated esophagus with a characteristic "bird's beak" appearance at the
gastroesophageal junction. Which of the following is the most likely
diagnosis?
Answer:
Achalasia
Achalasia is a condition where the muscles in the lower part of the esophagus and the
lower esophageal sphincter(LES) fail to relax properly. This causes difficulty swallowing,
regurgitation of undigested food, and weight loss over time. The barium swallow tests
showing a "bird's beak" appearance—where the esophagus is dilated above a tight
LES—is a classic finding for achalasia. These symptoms and imaging results make
achalasia the most likely diagnosis.
, Question:
A 58-year-old alcoholic man presents with severe epigastric pain radiating
to the back, nausea, and vomiting. Laboratory studies show –
Lipase 1200 U/L(normal <60 U/L)
Amylase 450 U/L (normal <100 U/L)
Calcium 7.2 mg/Dl
WBC 16,000/μL.
CT scan shows pancreatic edema with peripancreatic fluid collections.
Which of the following is the best predictor of severe disease in this
patient?
Answer:
hypocalcemia
In acute pancreatitis, hypocalcemia (low blood calcium) is a sign of severe
disease. It happens because the inflamed pancreas releases fat-digesting
enzymes, which breakdown fat in the surrounding tissue. This process
creates fatty acids that bind to calcium, lowering the blood calcium level.
Among the findings, hypocalcemia is a strong indicator of severity and
potential complications, making it the best predictor in this case.
