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?

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.

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.