Assessing and Managing Chest Pain in a Patient with Systemic Lupus Erythematosus (SLE)

QUESTION

A 33-year-old woman is brought to the emergency department with chest pain for the past day. Her chest pain is left-sided and worse with activities and breathing. She has also noted dyspnea. Her past medical history is significant for systemic lupus erythematosus (SLE), diagnosed ten years ago. She has had a malar rash, oral ulcers, pleuritis, and joint pains due to her condition. She was also diagnosed with lupus nephritis class III 6 years ago and was treated with high-dose corticosteroids and mycophenolate mofetil, which was eventually tapered off two years ago. She is currently taking hydroxychloroquine for her SLE, which has been quiescent for six months. She also has a history of hypertension and hyperlipidemia. Her other current medications include lisinopril and glipizide. On exam, the patient is in distress due to pain and is sweating. Vital signs show pulse rate 110/min, blood pressure 118/73 mmHg, and temperature 98.6 F. The physical exam is otherwise unremarkable. Which of the following is the next best step in managing this patient? A. Chest X-ray B. 24-hour urinary protein C. Electrocardiography D. IV prednisolone

ANSWER

Assessing and Managing Chest Pain in a Patient with Systemic Lupus Erythematosus (SLE)

Chest pain is a concerning symptom that can have various etiologies, ranging from benign causes to life-threatening conditions. In the case of a 33-year-old woman with a history of SLE, presenting with left-sided chest pain exacerbated by activities and breathing, a systematic approach to evaluation is crucial. The patient’s complex medical history, including SLE and lupus nephritis, adds to the diagnostic challenge. Let’s analyze the next best step in managing this patient’s condition.

Step 1: Initial Assessment and Stabilization

The patient’s presentation with chest pain and distress necessitates an initial assessment to rule out any immediate life-threatening conditions, such as a myocardial infarction or pulmonary embolism. Vital signs are stable, but her symptoms warrant further evaluation.

Step 2: Focused Evaluation

Given the patient’s history of SLE, the initial evaluation should prioritize ruling out potential cardiac or pulmonary complications related to her underlying autoimmune condition. In this context, the next best step would be:
C. Electrocardiography (ECG)

Reasoning for Choosing Electrocardiography (ECG)
An ECG is a valuable diagnostic tool to assess cardiac function and detect any abnormalities, such as myocardial ischemia or pericarditis, which can occur in patients with SLE. ECG findings may provide crucial information about the origin of her chest pain.
ECG can help rule out acute coronary syndrome, which presents with chest pain and is a concern in this patient with cardiovascular risk factors (hypertension and hyperlipidemia).

Step 3: Additional Assessments

While the ECG is a priority, the evaluation should not stop there. Depending on the ECG findings and clinical suspicion, further assessments may be needed:
If the ECG suggests cardiac involvement, additional cardiac studies like cardiac enzymes or echocardiography may be warranted.
If the ECG is unremarkable for cardiac issues, consideration of other causes of chest pain, such as pleuritis, should be explored based on clinical judgment.

Step 4: Ongoing Management

Based on the findings from the initial assessment and ECG, the patient’s management plan should be tailored to address the underlying cause of her chest pain.
If cardiac involvement is identified, appropriate cardiology consultation and treatment should be initiated.
If the chest pain is related to pleuritis or other non-cardiac causes, treatment and management should be directed toward addressing her lupus-related symptoms and any potential complications.

In summary, in a patient with SLE presenting with chest pain, the initial evaluation should prioritize ruling out cardiac involvement. Therefore, the next best step is to perform an Electrocardiography (ECG) to assess cardiac function and detect any cardiac abnormalities. Subsequent management should be guided by the ECG findings and clinical assessment, with a focus on addressing the underlying cause of the chest pain while considering the patient’s complex medical history.