# A 28-year-old pregnant woman at 32 weeks gestation presents to the emergency department with a 3-day history of fever, cough, and shortness of breath. She tests positive for COVID-19. What is the most important initial assessment the nurse should prioritize?

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> subject: Maternal Newborn Health

## 문제

A 28-year-old pregnant woman at 32 weeks gestation presents to the emergency department with a 3-day history of fever, cough, and shortness of breath. She tests positive for COVID-19. What is the most important initial assessment the nurse should prioritize?

## 보기

1. Assess fetal heart rate and uterine contractions
2. Evaluate maternal oxygen saturation and respiratory status **✔ 정답**
3. Obtain complete blood count and inflammatory markers
4. Check blood glucose levels and ketones

**정답: 2**

## 해설

In pregnant women with COVID-19, respiratory assessment is the priority because maternal oxygenation directly affects fetal well-being and rapid respiratory compromise can occur due to physiological changes of pregnancy. Other assessments are important but secondary to stabilizing the mother's respiratory status.

## 심화 해설

Understanding the Priority: Maternal Respiratory Status

The correct answer is to evaluate maternal oxygen saturation and respiratory status. In the context of a pregnant patient with COVID-19, this assessment is the most critical initial action because it directly addresses the most immediate threat to both the mother and the fetus: maternal hypoxia.

Why Respiratory Assessment Takes Priority

The primary pathophysiological concern in COVID-19 is a viral pneumonia that can rapidly progress to acute hypoxemic respiratory failure. For a pregnant woman at 32 weeks gestation, this risk is amplified. Pregnancy induces significant physiological changes, including a 20-30% increase in oxygen consumption and a decreased functional residual capacity, which reduces her respiratory reserve [1, 2]. This makes her more vulnerable to rapid desaturation. When a mother’s oxygen saturation drops, it directly compromises oxygen delivery to the fetus via the placenta, leading to fetal hypoxia and distress. Therefore, identifying and correcting maternal hypoxia is the foundational step in stabilizing both patients. The research underscores that the severity of maternal respiratory illness is the primary driver of adverse outcomes, including the need for intensive care and mechanical ventilation [1, 3].

Analyzing the Other Options

While the other assessments are important, they are secondary to ensuring the mother is adequately oxygenated.

- Option 1: Assess fetal heart rate and uterine contractions. This assessment is a core component of obstetrical triage, but it is not the initial priority in a patient presenting with acute respiratory symptoms. Fetal well-being is a direct consequence of maternal physiological stability. If the mother is hypoxic, the fetal heart rate tracing will show abnormalities. The immediate intervention is to optimize the maternal environment—starting with oxygen status—which will then improve fetal status [2]. Performing a fetal assessment first delays critical maternal resuscitation.

- Option 3: Obtain complete blood count and inflammatory markers. Laboratory markers such as lymphopenia and elevated C-reactive protein are associated with disease severity and can help predict the risk of clinical deterioration [1, 3]. However, drawing blood and waiting for results takes time. The nurse’s immediate, bedside assessment of oxygenation using pulse oximetry provides real-time data that can guide life-saving interventions like supplemental oxygen therapy without any delay.

- Option 4: Check blood glucose levels and ketones. While metabolic assessment is a part of comprehensive care, it is not the priority in an acute respiratory presentation. COVID-19 is not primarily a metabolic crisis, and this assessment does not address the immediate, life-threatening problem of potential respiratory failure.

Clinical Application of the ABC Framework

This clinical scenario is a direct application of the Airway, Breathing, Circulation (ABC) framework, the universal standard for initial patient assessment. A patient’s report of fever, cough, and shortness of breath with a positive COVID-19 test points directly to a "Breathing" problem. The nurse’s first action must be to evaluate the patency of the airway and the effectiveness of breathing and gas exchange. Assessing oxygen saturation and respiratory status (rate, depth, effort, breath sounds) is the clinical manifestation of the "B" in ABC. A study on managing labor in women with COVID-19 reinforces that the initial focus must be on maternal stabilization, with continuous monitoring of oxygen saturation being a cornerstone of care [2]. Once maternal oxygenation is ensured, the nurse can proceed with fetal assessment and other diagnostic tests.References (research sources)

- [2]Managing Labour in Women with COVID-19.Research articleChilaka VN, Navti O, Opoku A, Okunoye GO, Babarinsa I, Odukoya OA, Bako A, Sulaiman AKP, Mohan M. (2023) · DOI: 10.3390/jcm12123980

## 임상 시나리오

Clinical Practice Guidance

Triage and Initial Assessment in the Pregnant Patient with Suspected COVID-19 Pneumonia

In the emergency setting, the initial assessment of a pregnant patient with respiratory symptoms and confirmed or suspected COVID-19 must prioritize maternal respiratory status using the ABC (Airway, Breathing, Circulation) framework. The physiological changes of pregnancy, including a 20-30% increase in oxygen consumption and decreased functional residual capacity, reduce respiratory reserve and accelerate the risk of decompensation.

- **Immediate Action:** Assess airway patency, work of breathing, and auscultate lung sounds. Obtain continuous pulse oximetry and, if indicated, an arterial blood gas to evaluate for hypoxemic respiratory failure.

- **Oxygen Therapy Goal:** Maintain maternal oxygen saturation (SpO2) at or above 95% to ensure adequate fetal oxygenation. Initiate supplemental oxygen via nasal cannula or non-rebreather mask for SpO2 below this threshold, titrating to effect.

- **Maternal Positioning:** Position the patient in the left lateral decubitus position to relieve aortocaval compression and improve both maternal cardiac output and placental perfusion, while optimizing ventilation.

Secondary Assessments and Team-Based Care

Once maternal oxygenation is addressed or stabilized, a coordinated multidisciplinary approach is essential. Fetal well-being is directly dependent on maternal stability.

- **Fetal Monitoring:** Initiate continuous electronic fetal monitoring after maternal stabilization. Be aware that maternal fever and hypoxia can cause fetal tachycardia and non-reassuring patterns.

- **Diagnostic Workup:** Obtain laboratory tests including complete blood count, inflammatory markers (CRP, ferritin), and a comprehensive metabolic panel to assess for end-organ dysfunction and guide treatment decisions.

- **Consultation:** Promptly consult obstetrics, maternal-fetal medicine, and critical care teams to co-manage the patient and plan for potential preterm delivery if maternal status deteriorates despite maximal support.

## 핵심 개념

- **Maternal Hypoxia** — A state of oxygen deficiency in the mother's arterial blood, which directly reduces placental oxygen transfer and can lead to fetal hypoxemia and distress.
- **Functional Residual Capacity (FRC)** — The volume of air remaining in the lungs after a normal exhalation; it is physiologically decreased during pregnancy, reducing respiratory reserve.
- **Acute Hypoxemic Respiratory Failure** — A life-threatening condition where the lungs cannot provide enough oxygen to the blood, a common severe complication of COVID-19 pneumonia.
- **Placental Oxygen Transfer** — The passive diffusion of oxygen from maternal blood in the intervillous space to fetal blood, critically dependent on a sufficient maternal oxygen gradient.
- **Triage Prioritization** — The process of determining the priority of patients' treatments based on the severity of their condition, using frameworks like ABC (Airway, Breathing, Circulation).

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