A 25 - year old primigravida presents at 8 weeks of gestation with hyperemesis. Which of these is not included in the triad of hyperemesis ?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2023

Explanation

Increased appetite is incorrect as hyperemesis gravidarum is characterized by severe nausea, persistent vomiting, and food aversion, leading to a poor appetite (anorexia).
The physiological distress caused by constant vomiting makes the desire for food highly unlikely.
This symptom is the direct opposite of what is experienced by patients with this condition.

Option A: Dehydration is a core component of the hyperemesis triad. It results from significant fluid loss due to persistent vomiting and the inability to tolerate oral fluids.
Option B: Weight loss, specifically a loss of more than 5% of pre-pregnancy body weight, is a key diagnostic criterion and part of the triad. It is a direct consequence of poor nutritional intake and vomiting.
Option C: Ketosis is the third component of the triad. It occurs due to carbohydrate starvation, forcing the body to metabolize fat for energy, which produces ketones as a byproduct.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Clinical triad of hyperemesis gravidarum as background academic context rather than a clinical decision trigger.
Recognizing the triad of hyperemesis gravidarum is crucial for nurses to differentiate it from the more common 'morning sickness' and to initiate timely and aggressive management.
Failure to treat can lead to severe complications for the mother, such as Wernicke's encephalopathy (due to thiamine deficiency), renal failure, and for the fetus, such as intrauterine growth restriction (IUGR) and preterm birth.
What if the patient presented with only mild nausea and no weight loss or signs of dehydration? This would be classified as 'nausea and vomiting of pregnancy' (NVP), a common condition managed conservatively with dietary advice and reassurance, not the intensive inpatient treatment required for hyperemesis gravidarum.

How to Approach the Question

First, identify that this is a negative question, asking what is 'NOT' included.
Recall the core concept: the clinical triad of hyperemesis gravidarum.
Systematically review the three key features: significant weight loss, dehydration, and ketosis.
Evaluate each option against these three features.
Options A, B, and C (Dehydration, Weight loss, Ketosis) are all established components of the triad.
Option D (Increased appetite) is logically inconsistent with a condition defined by severe vomiting and nausea.

Concept Tested & Keywords

Concept Tested: Clinical triad of hyperemesis gravidarum
Stem keywords: primigravida, 8 weeks of gestation, hyperemesis, triad
Lead-in keywords: not included
Clinical cues: The patient's presentation with hyperemesis at 8 weeks gestation points towards a complication of early pregnancy.
Negative lead-in flag: Question asks for the exception (what is NOT included)

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E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 3-8

E6 Medicine Davidson Principles Practice 24e p. 1298-1300

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