A nurse is caring for a 45-year-old client with a history of hepatitis B-related cirrhosis who is admitted to the emergency department with sudden onset of vomiting bright red blood and passing black, tarry stools. The client appears pale and diaphoretic, and vital signs are: blood pressure 90/60 mmHg, heart rate 115 bpm, and respiratory rate 26/min. Which nursing action should the nurse perform first?

Establishing large-bore IV access and initiating fluid resuscitation is the priority to address hypovolemic shock from acute variceal bleeding. Other interventions like octreotide, NG tube, or endoscopy are secondary until hemodynamic stability is achieved.

Clinical Presentation and Initial Assessment

This client presents with classic signs of an acute upper gastrointestinal (GI) hemorrhage, most likely from ruptured esophageal varices, a severe complication of portal hypertension secondary to hepatitis B-related cirrhosis. The sudden onset of hematemesis (vomiting bright red blood) and melena (black, tarry stools) confirms active, rapid bleeding in the upper GI tract. The vital signs are critically deranged: a blood pressure of 90/60 mmHg indicates hypotension, a heart rate of 115 bpm is a compensatory tachycardia, and a respiratory rate of 26/min suggests the body is attempting to compensate for metabolic acidosis from hypoperfusion. The pallor and diaphoresis are clinical manifestations of the sympathetic nervous system's response to profound hypovolemic shock. This combination of findings signals a life-threatening emergency where the immediate priority is not to stop the bleeding directly, but to preserve vital organ perfusion.

Prioritization and Rationale for the First Action

The correct first action is to establish large-bore IV access and initiate fluid resuscitation. The physiological rationale is grounded in the principles of managing hypovolemic shock. The client's mean arterial pressure is critically low, leading to inadequate tissue oxygenation and a high risk of progression to irreversible shock, multi-organ failure, and cardiac arrest. The foundational evidence for this priority is that fluid resuscitation is the cornerstone of initial management for acute GI hemorrhage to stabilize hemodynamics and prevent these complications ^[1]. The goal is to restore intravascular volume, improve cardiac output, and stabilize blood pressure before the body's compensatory mechanisms fail. Without a circulating volume to carry oxygen, all other interventions, including medications and endoscopic procedures, will be ineffective. This aligns with the "C" (Circulation) component of the primary survey in emergency care.

Analysis of Other Options in the Clinical Sequence

The other options represent critical interventions, but they are secondary to hemodynamic stabilization. Their correct placement in the sequence of care is as follows:

- Administer prescribed octreotide intravenously: Octreotide, a somatostatin analog, is a key pharmacologic agent for reducing portal pressure and controlling variceal hemorrhage. However, its vasoactive effects require a functional circulatory volume to be distributed and to be effective without causing further hypotension. It should be initiated promptly, but only after IV access is secured and fluid resuscitation has begun.
- Insert a nasogastric tube for gastric decompression: While an NG tube can help assess the rate of ongoing bleeding, clear the stomach for endoscopy, and prevent aspiration, its insertion in a patient with potential esophageal varices carries a risk of trauma and further bleeding. More importantly, it does not address the immediate threat of cardiovascular collapse from hypovolemia.
- Prepare the client for emergency endoscopy: Endoscopy is the definitive diagnostic and therapeutic procedure for variceal bleeding, allowing for band ligation or sclerotherapy. However, performing endoscopy on a hemodynamically unstable patient is extremely dangerous. The procedure requires sedation, which can cause further hypotension and respiratory compromise. The patient must first be stabilized with fluid resuscitation to safely tolerate the procedure.

The clinical decision-making follows a strict hierarchy: first, restore circulating volume to maintain vital organ function; second, initiate pharmacologic therapy to reduce bleeding; and third, prepare for definitive endoscopic intervention once the patient is stable enough to tolerate it ^[1].