[Transudative pleural effusions and the ovarian hyperstimulation syndrome]

Area of Science:

• Reproductive Endocrinology
• Pulmonology
• Clinical Biochemistry

Background:

• Ovarian hyperstimulation syndrome (OHS) can lead to significant fluid shifts, including pleural effusions.
• These effusions are often accompanied by hemoconcentration, complicating their biochemical analysis.
• Distinguishing between transudative and exudative effusions is critical for appropriate patient management.

Observation:

• This report details three cases of symptomatic pleurisy with ascites in OHS patients requiring therapeutic pleural aspiration.
• Biochemical analysis of pleural fluid, particularly protein levels, can be misleading if considered in isolation.
• Elevated pleural fluid protein (>30 g/L) in OHS may be misinterpreted as exudative without considering concurrent serum concentrations.

Findings:

• The study emphasizes that pleural fluid protein levels in OHS must be interpreted relative to serum concentrations.
• Measurement of pleural and serum protein, LDH levels, and the serum-effusion albumin gradient aids in confirming transudative effusions.
• The transudative nature of OHS-related pleural effusions was confirmed in three personal cases, contrasting with some literature findings.

Implications:

• Accurate diagnosis of transudative effusions in OHS prevents unnecessary interventions for presumed exudative processes.
• Understanding the biochemical nuances of OHS effusions improves diagnostic accuracy and patient care.
• Symptomatic treatment response further supports the transudative etiology of these effusions in OHS.