# A nurse is assessing a 65-year-old patient who was admitted with suspected COVID-19. Which assessment finding would be the MOST concerning and require immediate intervention?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=541871  
> language: ko  
> subject: Infectious Diseases

## 문제

A nurse is assessing a 65-year-old patient who was admitted with suspected COVID-19. Which assessment finding would be the MOST concerning and require immediate intervention?

## 보기

1. Oxygen saturation of 88% on room air with mild dyspnea and confusion
2. Temperature of 101.5°F with chills, body aches, and mild fatigue
3. Loss of taste and smell with mild headache and nasal congestion
4. Silent hypoxemia with oxygen saturation of 88% and no apparent respiratory distress **✔ 정답**

**정답: 4**

## 해설

Silent hypoxemia (oxygen saturation 88% without distress) is the most concerning finding as it indicates severe respiratory failure requiring immediate intervention like oxygen therapy. Other findings (mild dyspnea, fever, loss of taste) are less urgent.

## 심화 해설

Clinical Judgment
This question assesses the 'Recognizing Cues' and 'Analyzing Cues' stages of the Clinical Judgment Measurement Model (CJMM). The key is to identify the most decisive cue indicating immediate danger among various symptoms. Silent hypoxemia in option 4 is a contradictory clinical picture where the patient "appears comfortable" despite severe hypoxia with an SpO2 of 88%. This is a characteristic danger signal of COVID-19, which can lead to rapid respiratory deterioration and Acute Respiratory Distress Syndrome (ARDS), requiring immediate intervention. The other options require monitoring and management but are not life-threatening emergencies.

Memory Tip:
**S**ilent + **H**ypoxemia = **S**end for **H**elp!

Or remember it as **H**appy **H**ypoxia = **H**ighly **H**azardous.

KR vs US:
In Korea, a patient's subjective complaint of dyspnea is considered very important, but the US-style NGN approach places more emphasis on objective data (SpO2) and the discrepancy with physical examination findings. You must act immediately if the numbers are dangerous, "even if the patient says they are fine."

## 임상 시나리오

Clinical Practice Guide
When assessing COVID-19 patients, respiratory status evaluation should go beyond simply asking, "Are you short of breath?" Do the following:
1. Monitor SpO2 regularly, but especially compare values at rest and after minimal activity (e.g., going to the bathroom).
2. Even if the patient says they are "fine," observe respiratory rate, use of accessory muscles, and whether speech is interrupted by breathlessness.
3. If silent hypoxemia is suspected, immediately report to the physician and prepare oxygen therapy.

Caution:
In SATA (Select All That Apply) questions asking for the "most concerning" finding, silent hypoxemia is almost always included in the correct answer. Other typical symptoms like fever or loss of taste may be selected as "concerning," but they are not the "most" concerning.

## 핵심 개념

- **Silent Hypoxemia (무증상 저산소증)** — A condition where the patient does not complain of or show typical signs of respiratory distress despite having severe hypoxemia (markedly decreased SpO2). A dangerous phenomenon commonly seen in COVID-19.
- **Oxygen Saturation (SpO2) (산소포화도)** — An indicator that shows the percentage of hemoglobin in the blood that is bound to oxygen. Normal is 95-100%, below 90% indicates hypoxemia, and 88% or lower is a dangerous level requiring immediate medical intervention.
- **Dyspnea (호흡곤란)** — A subjective symptom of feeling short of breath or difficulty breathing. In silent hypoxemia, the key is the mismatch between this objective measurement (low SpO2) and the subjective feeling (no dyspnea).
- **COVID-19** — Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a respiratory infectious disease. It can cause silent hypoxemia through alveolar damage, inflammation, and microthrombus formation.
- **Clinical Judgment (임상 판단)** — The process by which a nurse collects and analyzes patient data, assigns meaning, decides on interventions, and evaluates outcomes. This question assesses the ability to identify risk signals and prioritize them.

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