A nurse is assessing a 28-year-old pregnant client at 32 weeks gestation who presents to the emergency department with complaints of severe headache, blurred vision, and epigastric pain. The client's blood pressure is 160/110 mmHg, and she has 3+ proteinuria. What is the most important assessment the nurse should perform first?
The nurse needs to prioritize assessment findings that indicate potential complications of preeclampsia with severe features.
1Check for ankle edema and weight gain
2Assess deep tendon reflexes and clonus✓ 정답
3Monitor fetal heart rate patterns
4Evaluate urine output over the past 24 hours
해설
Assessing deep tendon reflexes and clonus is priority to evaluate CNS irritability and seizure risk in severe preeclampsia. Other assessments are important but less urgent.
Core Nursing ExplanationKey Concept Analysis: This question tests the priority nursing assessment for a patient with Preeclampsia with severe features. The patient presents with classic symptoms (severe headache, blurred vision, epigastric pain), hypertension (160/110 mmHg), and significant proteinuria (3+). The primary life-threatening complication for the mother is progression to Eclampsia (seizures), which is preceded by increased central nervous system (CNS) irritability. The most immediate assessment to detect this impending danger is a neurological evaluation.
Answer Rationale: Key Point! The priority is to assess for signs of increasing CNS irritability, which is a direct precursor to seizures. Deep tendon reflexes (DTRs) and Clonus are key indicators of hyperreflexia, a hallmark of worsening preeclampsia. Assessing these provides immediate, actionable data on the patient's seizure risk and guides urgent interventions like magnesium sulfate administration. This aligns with the nursing principle of assessing the most unstable and life-threatening condition first (Airway, Breathing, Circulation, Disability).
Distractor Analysis:
Option 1 (Check for ankle edema and weight gain): While edema and sudden weight gain are associated with preeclampsia, they are common in normal pregnancy and are not specific indicators of an imminent crisis like a seizure. They are part of the general assessment but not the priority.
Option 3 (Monitor fetal heart rate patterns): Fetal assessment is critically important. However, the mother's condition must be stabilized first. A seizure (eclampsia) would cause profound hypoxia and bradycardia in the fetus. Preventing the maternal seizure is the most effective way to protect the fetus at this moment.
Option 4 (Evaluate urine output over the past 24 hours): Oliguria (decreased urine output) is a sign of severe preeclampsia and renal involvement. However, this is a retrospective assessment. The immediate need is to evaluate the current, acute neurological status to prevent a seizure. Current hourly urine output monitoring would be initiated, but the 24-hour evaluation is not the first action.
Related Concepts: The management of severe preeclampsia focuses on the "HELLP syndrome" triad (Hemolysis, Elevated Liver enzymes, Low Platelets), which is suggested by the epigastric pain. Seizure prophylaxis with Magnesium sulfate is the standard treatment, and its effectiveness is monitored by assessing DTRs, respiratory rate, and urine output.
Concept Summary
Concept
Key Points
Preeclampsia
Hypertension (≥140/90 mmHg) + Proteinuria after 20 weeks gestation.
Severe Features
BP ≥160/110 mmHg, cerebral/visual symptoms, epigastric/RUQ pain, pulmonary edema, impaired liver function, thrombocytopenia, severe proteinuria.
Eclampsia
The onset of seizures in a preeclamptic patient. A medical emergency.
Priority Assessment
Neurological status (DTRs, clonus, headache) to assess seizure risk.
Priority Intervention
Administer magnesium sulfate for seizure prophylaxis.
Side-by-Side Comparison!
Assessment
Significance in Preeclampsia
Priority Level
Deep Tendon Reflexes & Clonus
Direct indicator of CNS irritability and imminent seizure risk.
HIGHEST (First) - Prevents maternal catastrophe.
Fetal Heart Rate (FHR)
Indicates fetal well-being and response to maternal hypoxia/vasoconstriction.
High - Performed after/immediately with maternal neuro assessment.
Epigastric/RUQ Pain
Suggests liver involvement (stretching of Glisson's capsule), possible HELLP syndrome.
High - Triggers labs (CBC, LFTs) and close monitoring.
Edema & Weight Gain
General sign of fluid retention; not specific for severity.
Low - Part of routine assessment, not a priority in acute setting.
Anatomy, Physiology & Pharmacology Points
Pathophysiology: Preeclampsia involves generalized vasospasm. This increases systemic vascular resistance (causing hypertension), reduces organ perfusion (kidneys → proteinuria; brain → headache, hyperreflexia; liver → pain), and damages endothelial cells.
Neurological Mechanism: Cerebral vasospasm and edema increase intracranial pressure and neuronal irritability, leading to hyperreflexia (4+ DTRs) and clonus, which are warning signs for seizures.
Pharmacology - Magnesium Sulfate: It is a CNS depressant and calcium channel blocker at the neuromuscular junction. It does not lower blood pressure significantly. Its primary action is to prevent seizures by reducing neuronal excitability. Toxicity is assessed by loss of DTRs, respiratory depression, and decreased urine output.
Memory Tips
Think "Seizure First": In severe preeclampsia, the most immediate threat to the mother's life is a seizure. Your first assessment must answer: "Is she about to have a seizure?" Hence, check reflexes.
Acronym for Severe Features:Headache, Epigastric pain, Liver problems, Low platelets, Pressure high (≥160/110).
MgSO₄ Monitoring: Remember the "UR" rule for toxicity: Urine output <30 mL/hr, Respiratory rate <12/min, loss of Reflexes.
High-Frequency NCLEX Topics
Preeclampsia is a high-yield topic. The NCLEX loves to test:
Priority Action: Differentiating between important and most urgent assessments/interventions.
Signs & Symptoms: Recognizing classic vs. atypical presentations.
Medication: Purpose, administration, and toxicity of magnesium sulfate.
Patient Education: Teaching about home monitoring (e.g., report headache, visual changes, epigastric pain).
Watch Out for Question Variations!
Shift from Assessment to Intervention: "The nurse assesses 4+ DTRs and sustained clonus. What is the priority intervention?" (Answer: Prepare to/administer magnesium sulfate as prescribed).
Shift to Fetal Focus: "After stabilizing the mother, what is the next priority?" (Answer: Continuous fetal monitoring).
Lab Value Focus: "The client with severe preeclampsia has epigastric pain. Which lab result is the nurse most concerned about?" (Answer: Elevated liver enzymes (AST/ALT) and low platelets, indicating HELLP syndrome).
Nursing Clinical Practice GuideClinical Scenario: You are the triage nurse in Labor & Delivery. A 32-week pregnant patient arrives with her partner, holding her head and stating, "The light hurts my eyes, and I have this terrible burning pain right here (points to epigastrium)."
Disability (Neurological):First, assess DTRs and clonus. Have the patient sit with legs dangling. Use a reflex hammer on the patellar tendon. For clonus, dorsiflex the foot sharply and hold; feel for rhythmic beats. Document as "absent," "1-2 beats," or "sustained."
Ask specifically about headache severity, visual changes (scotomata), and pain location.
Immediate Actions:
Place patient in a left lateral recumbent position to improve placental and renal perfusion.
Initiate continuous fetal monitoring.
Establish IV access (large bore) and prepare for magnesium sulfate infusion as per protocol. Have calcium gluconate (antidote for MgSO₄ toxicity) at the bedside.
Obtain stat labs: CBC, liver function tests (LFTs), creatinine, uric acid.
Ongoing Monitoring & Safety:
Neurological Checks: Hourly DTRs, level of consciousness.
Environment: Keep the room quiet and dimly lit to minimize sensory stimulation and seizure triggers.
Patient Safety and Precautions:
Seizure Precautions: Raise side rails, pad them, have suction and oxygen ready at the bedside.
Magnesium Sulfate Administration: Administer loading dose over 20-30 minutes, followed by maintenance infusion via an infusion pump. Before each bag, check: DTRs are present, respiratory rate >12, and urine output >30 mL/hr.
Contraindication: Do not administer antihypertensives like nifedipine too aggressively. A sudden, severe drop in BP can compromise placental perfusion.
Maintenance Dose: Often 1-2 g/hr via infusion pump.
Monitoring for Therapeutic Effect: Absence of seizures.
Monitoring for Toxicity (Every 1-2 hrs):
Check DTRs: If absent, HOLD the infusion and notify the provider.
Check Respiratory Rate: If <12/min, HOLD infusion, assess O2 saturation, notify provider.
Check Urine Output: If <30 mL/hr for 2 consecutive hours, notify provider (risk of Mg accumulation).
Antidote: Calcium gluconate 1 g IV over 3 minutes for life-threatening toxicity (respiratory arrest).
A Word from Your Senior Nurse
"Nursing is not just about carrying out physician orders — it's about being the frontline guardian for your patients! In this scenario, your quick, knowledgeable assessment of reflexes isn't just a 'checklist item.' It's you recognizing the silent alarm bells before the seizure sirens go off. That moment of connecting the patient's symptoms to the pathophysiology and taking the right priority action is what saves lives. When studying for your boards, don't just memorize 'check DTRs' — visualize the anxious patient, feel the hyperreflexive kick of their knee, and understand why it matters. That clinical thinking is what will make you an excellent nurse, on the NCLEX and at the bedside."
Preeclampsia with Severe Features — Hypertension (≥160/110 mmHg) with proteinuria occurring after 20 weeks gestation, accompanied by symptoms of end-organ dysfunction (CNS, hepatic, renal, hematologic).
Eclampsia — The occurrence of new-onset, generalized tonic-clonic seizures in a patient with preeclampsia, not attributable to other causes. A life-threatening obstetric emergency.
Deep Tendon Reflexes — Involuntary muscle contractions in response to a tendon strike. Hyperreflexia (3+ or 4+) indicates increased neuronal excitability and is a key sign of impending eclampsia.
Clonus — A series of involuntary, rhythmic, muscular contractions and relaxations, typically tested at the ankle. Sustained clonus is a sign of significant upper motor neuron irritation and severe CNS involvement in preeclampsia.
Magnesium Sulfate — The drug of choice for seizure prophylaxis in severe preeclampsia and for treating eclampsia. It acts as a CNS depressant and neuromuscular blocker. Toxicity is monitored by assessing DTRs, respiratory rate, and urine output.