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Monitoring for Complications
and Clinical Deterioration

Recognizing early warning signs and responding to a patient's changing condition before it becomes a crisis.

NCLEX-RN

What Is Clinical Deterioration?

Clinical deterioration is a worsening of a patient's physiological condition that, if missed, can progress to organ failure, cardiac arrest, or death. Most patients show subtle warning signs hours before a critical event.

Key Terms

Complication
A new, unexpected problem arising from disease, surgery, or treatment.
Trending
Comparing serial vital signs and labs over time to detect a change in direction.
Rapid Response
A team called to a deteriorating patient before a full code is needed.

The Window of Opportunity

Time Severity Early Signs Crisis

The Core Rule: ABCDE

When a patient looks unwell, assess in priority order. Airway first, because problems higher in the list kill fastest.

A
Airway: Is it patent? Stridor, choking, or obstruction?
B
Breathing: Rate, effort, \( \text{SpO}_2 \), breath sounds.
C
Circulation: Pulse, blood pressure, skin color, capillary refill.
D
Disability: Level of consciousness, pupils, glucose.
E
Exposure: Temperature, skin, wounds, full survey.

Early Warning Scores

Many facilities use a Modified Early Warning Score (MEWS). Each vital sign is scored, and the total triggers escalation.

Stable vs. Deteriorating

StableDeteriorating
Vital signsWithin normal rangeTrending away from baseline
Mental statusAlert, orientedConfused, drowsy, restless
\( \text{SpO}_2 \)\( \geq 94\% \)Falling, needs more \( \text{O}_2 \)
Urine output\( \geq 0.5 \) mL/kg/hrDecreasing
ActionRoutine monitoringEscalate, reassess often

How to Respond

1
Recognize: Notice the abnormal vital, trend, or "something is off."
2
Assess: Perform a focused ABCDE assessment at the bedside.
3
Intervene: Apply oxygen, reposition, stop the offending agent.
4
Escalate: Notify provider or call rapid response using SBAR.
5
Document: Record findings, actions, and the patient's response.

Communicate with SBAR

S — Situation
"Mr. Lee's BP dropped to 84/50."
B — Background
"Post-op day 1, abdominal surgery."
A — Assessment
"Pale, tachycardic, possible bleeding."
R — Recommendation
"I need you to come evaluate now."

Example 1: Post-Op Patient

A post-op patient: HR 118, BP 88/54, RR 24, restless. Baseline was HR 78, BP 124/76.

Example 2: Respiratory Change

A pneumonia patient: RR 30, \( \text{SpO}_2 \) 86\% on room air, using accessory muscles, anxious.

Example 3: Subtle Neuro Change

Baseline Alert, oriented x4 2 hours later Change Drowsy, slow to answer

Common Mistakes

✕ Ignoring trends
A single "normal" value hides a steady downward trend over hours.
✕ Waiting to escalate
Delaying the call until a crisis removes the early window.
✕ Skipping reassessment
Not rechecking after an intervention misses whether it worked.

Quick Reference

ParameterNormalConcerning
Heart rate60–100\( >120 \) or \( <50 \)
Resp. rate12–20\( >24 \) or \( <8 \)
\( \text{SpO}_2 \)\( \geq 94\% \)\( <90\% \)
Systolic BP90–140\( <90 \)
Temp (°C)36.5–37.5\( >38.5 \) or \( <35 \)

Question 1 of 5

Using the ABCDE approach, which finding should the nurse address first?

Question 2 of 5

A post-op patient shows rising HR and falling BP over two hours. This trend most likely indicates:

Question 3 of 5

A patient's \( \text{SpO}_2 \) is 86% with accessory muscle use. What is the nurse's first action?

Question 4 of 5

When calling rapid response, which framework gives a clear, structured handoff?

Question 5 of 5

A previously alert patient becomes drowsy and slow to answer. The nurse should recognize this as:

Key Takeaways

1
Trends matter more than single values. Watch the direction of change.
2
Assess in ABCDE order. Fix the highest abnormal letter first.
3
Escalate early using SBAR — the early window saves lives.
4
Reassess after every intervention and document the response.