A nurse is caring for a pregnant client diagnosed with hyperemesis gravidarum. Which nursing intervention should be the priority?
A 28-year-old woman at 10 weeks gestation presents to the emergency department with severe nausea and vomiting for the past week. She reports being unable to keep any food or fluids down and has lost 8 pounds since her last prenatal visit. Laboratory results show ketonuria and electrolyte imbalances.
1Provide oral nutrition with small, frequent meals and dry crackers
2Initiate intravenous fluid therapy with electrolyte replacement✓ 정답
3Administer prescribed oral antiemetic medications as needed
4Offer emotional support and reassurance to the client
해설
The priority intervention is IV fluid therapy with electrolyte replacement to correct dehydration and imbalances, as severe hyperemesis gravidarum can lead to maternal and fetal complications. Other options are supportive but not immediate priorities.
Understanding the Priority: Physiological Integrity and the ABC Framework
In the context of hyperemesis gravidarum (HG), the immediate threat to life is not the nausea itself, but the consequences of prolonged starvation and dehydration. The client’s history of being unable to keep any food or fluids down, combined with a significant weight loss of 8 pounds and laboratory findings of ketonuria and electrolyte imbalances, signals a state of severe volume depletion and metabolic derangement. Applying the nursing ABC (Airway, Breathing, Circulation) priority-setting framework, this client’s "Circulation" is compromised due to profound fluid volume deficit. Restoring intravascular volume and correcting electrolyte disturbances is the foundational step upon which all other interventions depend. Without hemodynamic stability, oral interventions are futile and the risk of catastrophic complications escalates.
Why Intravenous Fluid Therapy is the Priority Intervention
The correct answer is to initiate intravenous fluid therapy with electrolyte replacement. This directly addresses the critical physiological problem of hypovolemia and electrolyte depletion. The client’s ketonuria indicates that her body has shifted from using glucose to breaking down fat for energy due to starvation, a state that accelerates metabolic acidosis and worsens nausea. Intravenous administration of fluids containing dextrose and essential electrolytes like potassium and magnesium is required to break this cycle. This intervention re-establishes circulation, corrects metabolic imbalances, and provides a route for administering parenteral antiemetics if oral medications are not tolerated.
The Critical Link: Preventing Wernicke Encephalopathy
A crucial, high-acuity rationale for prioritizing intravenous therapy is the prevention of Wernicke Encephalopathy (WE), a severe and potentially irreversible neurological disorder. As highlighted in the provided case report, WE is caused by a deficiency of thiamine (vitamin B1) and can develop rapidly in pregnant women with severe HG [1]. The body’s thiamine stores are depleted within weeks of inadequate intake and persistent vomiting. The danger is magnified if dextrose-containing intravenous fluids are administered without first providing thiamine, as glucose metabolism consumes thiamine and can precipitate acute WE. Therefore, the priority nursing intervention involves not only initiating IV fluids but also anticipating the co-administration of high-dose intravenous thiamine before dextrose, as standard practice for this presentation. The case report describes a patient who developed neurological symptoms including nystagmus, limb ataxia, and postural instability, which were addressed with IV thiamine replacement [1]. This underscores that fluid and electrolyte resuscitation is the vehicle for delivering this lifesaving vitamin.
Analyzing the Other Options
- Option 1 (Provide oral nutrition with small, frequent meals and dry crackers): This is an appropriate long-term management strategy for mild nausea and vomiting of pregnancy, but it is contraindicated as a priority for a client with severe HG who is actively vomiting and unable to tolerate any oral intake. Attempting oral nutrition before stabilizing the client’s fluid and electrolyte status will likely fail and delay essential medical treatment.
- Option 3 (Administer prescribed oral antiemetic medications as needed): While antiemetics are a cornerstone of HG management, the oral route is ineffective for a client with intractable vomiting. The priority is to establish an intravenous line, which then allows for the administration of parenteral (IV) antiemetics that bypass the gastrointestinal tract and are far more likely to be effective.
- Option 4 (Offer emotional support and reassurance to the client): Emotional support is a vital, continuous nursing intervention for the psychological distress caused by HG. However, it is a psychosocial need that is secondary to the immediate physiological threat of fluid volume deficit and the risk of neurological injury from thiamine deficiency. Using Maslow’s hierarchy of needs, physiological integrity must be restored before higher-level psychosocial needs can be effectively addressed.
References (research sources)
[1]
Wernicke encephalopathy in pregnancy associated with hyperemesis gravidarum: a case report.Case reportSzablewska AW, Czerwińska-Osipiak A, Krawczyk A, Piekarski R. (2025) · DOI: 10.1186/s12884-025-07830-7
Clinical Priority: Managing Severe Hyperemesis Gravidarum
Immediate Priority: Initiate intravenous fluid resuscitation with electrolyte replacement. This directly addresses life-threatening hypovolemia and metabolic imbalances indicated by the client's inability to tolerate oral intake, significant weight loss, ketonuria, and abnormal electrolytes.
Pathophysiology & Assessment Findings
Starvation Ketosis: Prolonged vomiting and inability to eat deplete glycogen stores, forcing the body to metabolize fat for energy. This produces ketone bodies, leading to ketonuria and worsening nausea, creating a vicious cycle.
Electrolyte Depletion: Loss of hydrochloric acid from vomiting can cause hypochloremic metabolic alkalosis. Additionally, potassium and magnesium are lost, increasing the risk for cardiac dysrhythmias and muscle weakness.
Weight Loss: A loss of 8 pounds (over 5% of pre-pregnancy weight in a short period) is a critical indicator of severe malnutrition and fluid deficit.
Stepwise Clinical Management
Immediate Resuscitation: Establish IV access and begin isotonic crystalloid fluids (e.g., Normal Saline or Lactated Ringer's) with dextrose and electrolyte supplementation (potassium, magnesium) based on lab results. Thiamine (Vitamin B1) should be administered before dextrose to prevent Wernicke's encephalopathy.
NPO Status: Keep the client NPO (nothing by mouth) initially to rest the gastrointestinal tract until vomiting is controlled and hydration status improves.
Pharmacological Intervention: Once IV access is established and the client is rehydrated, administer IV antiemetics (e.g., ondansetron, metoclopramide, or promethazine) as prescribed. Oral antiemetics are reserved for after the client can tolerate oral intake.
Reintroduction of Oral Intake: After 24-48 hours of IV therapy and symptom control, slowly advance the diet from clear liquids to small, frequent, bland meals (e.g., dry toast, crackers).
Psychosocial Support: Provide emotional support and reassurance concurrently, but only after stabilizing the client's physiological condition.
Key Nursing Safety Checks
Monitor for Refeeding Syndrome: In severely malnourished clients, aggressive nutrition can cause dangerous shifts in fluids and electrolytes. Monitor cardiac, neurological, and respiratory status closely during initial rehydration and nutrition.
Accurate Intake and Output: Strict monitoring of IV fluids, urine output (for ketones and specific gravity), and daily weights are essential to evaluate treatment effectiveness.
Fetal Well-being: Once the client is stable, assess fetal heart rate and consider an obstetric ultrasound to evaluate fetal growth and amniotic fluid volume, as severe HG can impact fetal development.
Clinical Pearl: The ABC framework dictates that restoring circulation (intravascular volume) is the foundational priority. All other interventions, including antiemetics and nutrition, are dependent on first achieving hemodynamic stability.
Hyperemesis Gravidarum — Severe, persistent nausea and vomiting during pregnancy leading to weight loss, dehydration, ketonuria, and electrolyte imbalances, distinct from common morning sickness.
Ketonuria — Presence of ketone bodies in the urine, indicating the body is breaking down fat for energy due to inadequate carbohydrate intake or starvation, a key sign of metabolic stress in HG.
ABC Priority-Setting Framework — A nursing triage model prioritizing Airway, Breathing, and Circulation; in HG, compromised circulation from fluid volume deficit is the immediate concern.
Fluid Volume Deficit — A state of decreased intravascular, interstitial, and/or intracellular fluid, commonly caused by excessive vomiting and inadequate intake, leading to hypovolemia.
Intravenous Fluid Therapy — The administration of fluids and electrolytes directly into the bloodstream to rapidly correct dehydration, restore circulating volume, and balance electrolytes.