A 28-year-old woman presents to the emergency department with severe right lower abdominal pain, vaginal spotting, and dizziness. Her last menstrual period was 7 weeks ago. Vital signs: BP 90/60 mmHg, HR 110 bpm, temperature 98.6°F. Transvaginal ultrasound reveals no intrauterine gestational sac, and beta-hCG level is 2,500 mIU/mL. The nurse suspects ectopic pregnancy. What is the priority nursing intervention?
2Establish large-bore IV access and prepare for emergency surgery✓ 정답
3Position the patient in Trendelenburg position
4Obtain a complete obstetric history and family planning preferences
해설
Priority is establishing large-bore IV access and preparing for emergency surgery due to hemodynamic instability from suspected ruptured ectopic pregnancy. Other interventions like methotrexate or history-taking are secondary when shock signs are present.
Clinical Presentation and Immediate Threat Recognition
The patient presents with a classic triad for a ruptured ectopic pregnancy: unilateral lower abdominal pain, vaginal bleeding, and hemodynamic instability. Her vital signs—BP 90/60 mmHg and HR 110 bpm—indicate hypovolemic shock secondary to intra-abdominal hemorrhage. The transvaginal ultrasound finding of an empty uterus with a beta-hCG level of 2,500 mIU/mL is above the discriminatory zone, confirming an ectopic pregnancy. Dizziness reflects decreased cerebral perfusion, a late and ominous sign of significant blood loss.
Why Establishing IV Access and Preparing for Surgery is the Priority
The priority nursing intervention is to establish large-bore IV access and prepare for emergency surgery. This action directly addresses the life-threatening hypovolemic shock. The physiological basis is the loss of circulating blood volume from active hemorrhage into the peritoneal cavity, which reduces preload, stroke volume, and cardiac output. The compensatory tachycardia is insufficient to maintain perfusion, and without rapid volume resuscitation and surgical source control, the patient will progress to decompensated shock and cardiac arrest. The Guidelines for Essential Trauma Care emphasize that in resource-variable settings, the initial approach to life-threatening hemorrhage must focus on immediate circulatory support and definitive surgical control of the bleeding source [1]. While this guideline broadly addresses trauma, the principle of prioritizing hemorrhage control and volume resuscitation is directly transferable to a ruptured ectopic pregnancy, which is a form of internal traumatic hemorrhage.
Analysis of Incorrect Options
Administering prescribed methotrexate (Option 1) is contraindicated in a hemodynamically unstable patient. Methotrexate is a medical management option for a stable, unruptured ectopic pregnancy. In the presence of shock, the priority is surgical intervention, not a medication that requires time to act and is ineffective once rupture and significant hemorrhage have occurred. Positioning the patient in Trendelenburg (Option 3) is an outdated and potentially harmful practice for hypovolemic shock; it can impair respiratory mechanics and does not effectively improve central perfusion. The current standard is to keep the patient supine while elevating the legs if needed. Obtaining a complete obstetric history (Option 4) is an important secondary assessment but is not the priority when the patient’s airway, breathing, and circulation are compromised. The immediate threat to life from hemorrhagic shock must be managed first, following the ABC (Airway, Breathing, Circulation) framework.
Connecting to the Broader Context of Obstetric Hemorrhage
This scenario reflects a critical obstetric emergency. Data from a study on critically ill obstetric patients in an ICU setting reinforces that hemorrhage is a leading cause of admission and mortality, requiring aggressive, protocol-driven resuscitation and definitive management . The clinical profile of these patients often mirrors the presentation here: acute onset, rapid deterioration, and the need for immediate multidisciplinary intervention. Furthermore, a study on complete uterine rupture, a related catastrophic hemorrhagic event, highlights that adverse outcomes are directly linked to the speed of diagnosis and surgical intervention, with hemodynamic instability on presentation being a key predictor of poor prognosis . Although the specific study on heterotopic pregnancy discusses balancing management for a coexisting intrauterine pregnancy, its core principle that hemodynamic stability dictates the urgency of surgical intervention for the ectopic component is universally applicable . In this case, the patient’s instability eliminates all non-surgical options.
References (research sources)
[1]
Guidelines for Essential Trauma Care: Second Edition (2026).GuidelineMock C, Hardcastle TC, Gaarder C, Gupta A, Gyedu A, Joshipura M, Steyn E, Essential Trauma Care revision author group. (2026) · DOI: 10.1002/wjs.70321
Clinical Management of Ruptured Ectopic Pregnancy
A patient presenting with the triad of abdominal pain, vaginal bleeding, and hemodynamic instability with a positive pregnancy test should be presumed to have a ruptured ectopic pregnancy until proven otherwise. This is a surgical emergency.
Immediate Priorities
Circulatory Support: Immediately establish two large-bore (16- or 18-gauge) intravenous lines and initiate rapid infusion of warmed isotonic crystalloids (e.g., Lactated Ringer's or 0.9% Normal Saline) to combat hypovolemic shock. Type and crossmatch blood and activate the massive transfusion protocol if indicated.
Surgical Preparation: Notify the operating room and surgical team (OB/GYN) immediately. Definitive management is surgical removal of the ectopic pregnancy and control of the bleeding source, typically via laparoscopy or laparotomy. Prepare the patient by obtaining consent, completing preoperative checklists, and administering prescribed preoperative antibiotics.
Key Assessment Findings
Vital Signs: Hypotension (BP 90/60 mmHg) and reflex tachycardia (HR 110 bpm) are hallmark signs of significant blood loss. Dizziness indicates cerebral hypoperfusion.
Diagnostic Correlation: A beta-hCG level above the discriminatory zone (1,500-2,500 mIU/mL) without an intrauterine gestational sac on transvaginal ultrasound is highly specific for ectopic pregnancy.
Nursing Interventions to Avoid
Do not administer Methotrexate: Medical management is contraindicated in an unstable patient with a suspected rupture. It is reserved for hemodynamically stable patients with an unruptured ectopic pregnancy.
Do not place in Trendelenburg position: This position is not supported by evidence for managing shock and may compromise respiratory function. Keep the patient supine with legs elevated if needed while prioritizing IV access and volume replacement.
Do not delay care for detailed history: While a brief, focused history is needed, a complete obstetric and family planning history should be deferred until the patient is stabilized.
Ectopic Pregnancy — A condition where the fertilized egg implants outside the uterine lining, most commonly in the fallopian tube. It is an emergency situation that can cause severe internal bleeding and shock upon rupture, potentially life-threatening.
Hemodynamic Instability — A condition where the heart cannot effectively supply blood and oxygen to the body. Signs include low blood pressure, rapid heart rate, constriction of peripheral blood vessels, and decreased level of consciousness.
Beta-hCG (Human Chorionic Gonadotropin) — A hormone produced by the placenta, used to confirm and track pregnancy. In ectopic pregnancy, it generally rises more slowly than in a normal pregnancy, or if no intrauterine gestational sac is seen at a certain level (typically above 1,500–2,000 mIU/mL), it becomes a diagnostic clue.
Trendelenburg Position — A position where the patient's trunk and head are lowered and the legs are elevated. Historically used in shock, but it is no longer widely recommended as the primary position for hemorrhagic shock due to the risk of respiratory complications.
Methotrexate — It is an antimetabolite that inhibits cell growth and is used for the nonsurgical treatment of hemodynamically stable, unruptured early ectopic pregnancy. It stops the growth of fetal tissue.