Peripheral Edema: Evaluation and Management in Primary Care.

Area of Science:

• Medical Science
• Clinical Medicine
• Pathophysiology

Background:

• Edema is a prevalent clinical sign indicating diverse pathologies.
• It results from imbalanced capillary hemodynamics, leading to interstitial fluid accumulation.
• Chronicity and laterality of edema are key factors in guiding its evaluation.

Purpose of the Study:

• To outline a systematic approach for evaluating edema.
• To highlight diagnostic tools and decision rules for identifying edema etiology.
• To summarize evidence-based treatment strategies for various types of edema.

Main Methods:

• Initial evaluation includes basic metabolic panel, liver function tests, thyroid function tests, brain natriuretic peptide levels, and urine protein/creatinine ratio.
• Validated decision rules like Wells criteria and STOP-Bang criteria aid in assessing venous thromboembolic disease and obstructive sleep apnea.
• Imaging modalities such as compression ultrasonography, duplex ultrasonography with reflux, and echocardiography are employed based on clinical presentation.

Main Results:

• Acute unilateral lower-extremity edema requires prompt deep venous thrombosis evaluation.
• Chronic bilateral lower-extremity edema may indicate chronic venous insufficiency diagnosed via duplex ultrasonography.
• Pulmonary edema or elevated brain natriuretic peptide levels suggest heart failure, necessitating echocardiography.

Conclusions:

• Edema treatment is etiology-specific, with diuretics reserved for systemic causes.
• Ruscus extract and horse chestnut seed show moderate evidence for improving chronic venous insufficiency edema.
• Compression therapy is broadly effective across most edema etiologies.