photo-1786345387566.jpg
Answer
Answer: B) Arrest of active phase of labor
Reasoning:
The question describes:
- Active phase of labor (cervix already 6 cm dilated - past the 6 cm threshold that defines active phase)
- No cervical change despite 4 hours of adequate uterine contractions
- Membranes are ruptured
Key definitions (ACOG criteria):
| Disorder | Definition |
|---|---|
| Arrest of active phase | No cervical change for ≥4 hours with adequate contractions (or ≥6 hours with inadequate contractions) in active phase |
| Protracted active phase | Slower-than-normal rate of dilation (<1 cm/hr) but still progressing |
| Protracted descent | Slow but ongoing fetal descent |
| Latent phase arrest | Does not exist as a recognized entity (latent phase does not have an "arrest" diagnosis) |
Why B and not A:
- Protracted = slow but continuing progress
- Arrest = complete cessation of progress for the defined time period
- Here, there is zero further dilation over 4 hours with adequate contractions = classic arrest
Why not D:
- "Latent phase arrest" is not a standard obstetric diagnosis; the latent phase can be prolonged but the concept of "arrest" applies to the active phase
The answer is B - Arrest of active phase of labor.
photo-1786345531114.jpg
Answer
Answer: C) HMG-CoA lyase
Reasoning:
The classic triad here is:
- Hypoketotic hypoglycemia (cannot make ketones)
- Metabolic acidosis
- Elevated urinary 3-hydroxy-3-methylglutaric acid (3-HMG)
- Hepatomegaly
This is the textbook presentation of HMG-CoA lyase deficiency.
Understanding the pathway:
Leucine / Acetyl-CoA
↓
HMG-CoA ←── HMG-CoA synthase adds to acetoacetyl-CoA
↓
HMG-CoA lyase ← DEFICIENT HERE
↓
Acetoacetate + Acetyl-CoA (ketone body production)
When HMG-CoA lyase is absent:
- HMG-CoA accumulates → excreted as 3-hydroxy-3-methylglutaric acid in urine ✓
- Ketone bodies cannot be produced → hypoketotic hypoglycemia ✓
- Also blocks the final step of leucine catabolism → organic acidemia ✓
Why not the others:
| Option | Why wrong |
|---|---|
| A) HMG-CoA synthase | This enzyme is upstream - its deficiency also causes hypoketotic hypoglycemia but does NOT accumulate 3-HMG |
| B) HMG-CoA reductase | This is the cholesterol synthesis enzyme (statin target) - unrelated |
| D) Succinyl-CoA:3-ketoacid CoA transferase | Deficiency causes inability to utilize ketones - presents with ketoacidosis, not hypoketotic hypoglycemia |
The answer is C - HMG-CoA lyase deficiency.
The pathognomonic clue is the combination of hypoketotic hypoglycemia + elevated urinary 3-HMG acid.
photo-1786345635530.jpg
photo-1786345642958.jpg
Answer
Answer: D) It focuses primarily on malaria eradication, tuberculosis control, and vaccine production
The logo shown is UNICEF (United Nations Children's Fund).
Evaluating each option:
| Option | Correct? | Explanation |
|---|---|---|
| A) HQ in New York | ✓ TRUE | UNICEF headquarters is in New York City |
| B) Promotes GOBI campaign | ✓ TRUE | GOBI = Growth monitoring, Oral rehydration therapy, Breastfeeding, Immunization - a classic UNICEF child survival strategy |
| C) Participates in UBS projects | ✓ TRUE | UNICEF's UBS (UNICEF Basic Services) projects cover health, nutrition, water, sanitation, and education |
| D) Focuses on malaria, TB, vaccine production | ✗ FALSE | This describes WHO and its affiliated programs, not UNICEF |
UNICEF's actual focus areas:
- Child survival and development
- Basic education and gender equality
- Child protection
- HIV/AIDS and children
- Policy advocacy for children's rights
- Emergency response for children
The primary focus on malaria eradication, tuberculosis control, and vaccine production is the mandate of WHO (and organizations like Gavi, the Vaccine Alliance) - not UNICEF.
The answer is D.
This is a shared conversation. Sign in to Orris to start your own chat.