A nurse is assessing vital signs for a 60-year-old patient admitted with sepsis. The nurse documents the following vital signs: temperature 102.5°F (39.2°C), pulse 125 bpm, respirations 32/min, blood pressure 85/55 mmHg, oxygen saturation 86% on room air. Which assessment finding requires immediate nursing intervention?
The nurse documents the following vital signs: temperature 102.5°F (39.2°C), pulse 125 bpm, respirations 32/min, blood pressure 85/55 mmHg, oxygen saturation 86% on room air.
1Oxygen saturation of 86% on room air✓ 정답
2Temperature of 102.5°F (39.2°C)
3Pulse rate of 110 beats per minute
4Blood pressure of 90/60 mmHg
해설
Oxygen saturation of 86% indicates severe hypoxemia requiring immediate oxygen therapy to prevent respiratory failure. Other findings like fever and tachycardia are abnormal but less immediately life-threatening.
The patient's vital signs reveal a critical situation consistent with septic shock. When multiple abnormal findings are present, the nurse must prioritize interventions using the airway, breathing, and circulation (ABC) framework. An oxygen saturation of 86% on room air indicates severe hypoxemia, representing an immediate threat to tissue oxygenation and placing the patient at high risk for rapid decompensation . This finding reflects a direct "Breathing" problem that requires the most urgent intervention, such as immediate supplemental oxygen administration, to prevent cardiac arrest and end-organ damage.
While the other vital signs are also markedly abnormal, they fall under "Circulation" or represent systemic responses that are addressed after securing the airway and breathing. A blood pressure of 85/55 mmHg (mean arterial pressure approximately 65 mmHg) signifies hypotension and a state of hypoperfusion, which is a core component of the quick Sequential Organ Failure Assessment (qSOFA) criteria. The qSOFA score is a bedside tool used to identify septic patients at high risk for deterioration and mortality, and a systolic blood pressure of 100 mmHg or less awards one point . Similarly, a respiratory rate of 32/min is another qSOFA criterion, and a pulse rate of 125 bpm demonstrates the body's compensatory tachycardia to maintain cardiac output in the face of distributive shock. The elevated temperature of 102.5°F (39.2°C) is a classic sign of the systemic inflammatory response to infection.
However, the physiological hierarchy dictates that without adequate oxygenation, all other compensatory mechanisms will fail. The combination of a high respiratory rate and critically low oxygen saturation suggests the patient's work of breathing is increased while gas exchange is profoundly impaired. Research on nurse-led identification of high-risk septic patients emphasizes that early recognition of deterioration markers is essential to reduce mortality, and the most immediately life-threatening marker here is the severe hypoxemia . Therefore, the nurse must first intervene to correct the oxygen saturation before proceeding with fluid resuscitation for hypotension or other medical therapies.
Clinical Scenario
A 60-year-old patient with sepsis presents with vital signs: temperature 102.5°F (39.2°C), pulse 125 bpm, respirations 32/min, blood pressure 85/55 mmHg, and oxygen saturation 86% on room air. The nurse must identify the finding requiring immediate intervention.
Priority Assessment
Apply the ABC (Airway, Breathing, Circulation) framework. An SpO2 of 86% indicates severe hypoxemia, a direct threat to tissue oxygenation. This breathing problem takes precedence over circulatory issues like hypotension (85/55 mmHg) or tachycardia (125 bpm), which are addressed after oxygenation is stabilized.
Immediate Intervention
Administer supplemental oxygen via a non-rebreather mask at 10-15 L/min to target SpO2 above 94%. Prepare for possible advanced airway management if the patient shows signs of respiratory failure, such as altered mental status or worsening work of breathing.
Ongoing Monitoring
Continuously monitor SpO2, respiratory rate, and depth. Reassess vital signs within 15 minutes of initiating oxygen therapy. Monitor for signs of fluid responsiveness after initiating sepsis protocol fluids, as hypotension (MAP ~65 mmHg) indicates hypoperfusion requiring volume resuscitation.
Clinical Pearls
Hypoxemia (SpO2 below 90%) can lead to cardiac arrest within minutes if uncorrected.
In septic shock, the qSOFA score helps identify high-risk patients; a respiratory rate of 32/min and systolic BP of 85 mmHg each score one point.
Always prioritize breathing interventions before addressing circulation in the ABC framework.
ABC priority framework — A systematic approach prioritizing Airway, Breathing, and Circulation to determine the most urgent nursing intervention.
Hypoxemia — Abnormally low oxygen level in the blood, defined as SpO2 below 90%, requiring immediate oxygen therapy.
qSOFA — Quick Sequential Organ Failure Assessment tool using respiratory rate, systolic blood pressure, and altered mentation to identify high-risk septic patients.
Septic shock — A subset of sepsis with profound circulatory and metabolic abnormalities, including persistent hypotension and elevated lactate.
Oxygen saturation — The percentage of hemoglobin binding sites occupied by oxygen, normally 95-100% on room air.