O14.13 Severe pre-eclampsia, third trimester

Name of the Condition

• Severe pre-eclampsia, third trimester

Summary

Severe pre-eclampsia, third trimester is a pregnancy-related condition characterized by new-onset hypertension and significant signs of organ damage, typically occurring after 20 weeks of gestation. It requires urgent medical attention due to the increased risk of complications for both the mother and fetus. The condition is distinguished by severe blood pressure elevation and may include proteinuria or other indicators of organ dysfunction.

Causes

The exact cause of severe pre-eclampsia is not fully understood, but it is thought to involve problems with the placenta, such as insufficient blood flow or abnormal implantation. Genetic, immunological, and vascular factors may also contribute to its development.

Risk Factors

• First pregnancy or new partner.
• History of pre-eclampsia in previous pregnancies.
• Chronic hypertension, diabetes, or kidney disease.
• Obesity or advanced maternal age.
• Multiple gestation (e.g., twins or triplets).
• Autoimmune disorders like lupus.

Symptoms

• Elevated blood pressure (≥160/110 mmHg) after 20 weeks.
• Proteinuria (protein in urine) or other signs of kidney dysfunction.
• Severe headaches, visual disturbances (e.g., blurred vision), or upper abdominal pain.
• Sudden weight gain, swelling (edema), or shortness of breath.
• Signs of organ damage, such as elevated liver enzymes or low platelet count.

Diagnosis

Diagnosis is based on blood pressure measurements, urine tests for protein, and assessment of organ function. Additional tests, such as blood work or imaging, may be used to evaluate complications like liver or kidney involvement.

Treatment Options

Treatment focuses on managing blood pressure, preventing seizures, and monitoring for complications. This may include antihypertensive medications, magnesium sulfate for seizure prevention, and close fetal monitoring. Delivery is often recommended if the pregnancy is near term or if maternal or fetal health is at risk.

Prognosis and Follow-Up

With prompt treatment, outcomes for both mother and fetus can improve. However, severe pre-eclampsia carries risks of long-term complications, such as chronic hypertension or kidney disease. Follow-up care is essential to monitor blood pressure and organ function post-delivery.

Complications

• Placental abruption.
• HELLP syndrome (hemolysis, elevated liver enzymes, low platelets).
• Eclampsia (seizures).
• Stroke or other organ damage.
• Fetal growth restriction or preterm birth.

Lifestyle & Prevention

Regular prenatal care is critical for early detection. Maintaining a healthy weight, managing chronic conditions, and avoiding smoking or excessive alcohol use may help reduce risk. Low-dose aspirin may be recommended for high-risk individuals.

When to Seek Professional Help

Seek immediate medical attention if experiencing severe headaches, vision changes, abdominal pain, or sudden swelling. Prompt care is vital to prevent life-threatening complications.

Tips for Medical Coders

Document the trimester (third trimester) and severity (severe) to support accurate coding. Include details on blood pressure measurements, proteinuria, and any organ dysfunction to justify the diagnosis. Ensure documentation aligns with clinical findings for proper code assignment.