Diagnosing poststernotomy mediastinitis in the ED

Area of Science:

• Medical Diagnostics
• Infectious Diseases
• Cardiovascular Surgery

Background:

• Poststernotomy mediastinitis (PSM) is a severe complication following sternotomy, associated with high morbidity and mortality.
• Late diagnosis significantly contributes to poor patient outcomes.
• Early detection is critical, especially in the emergency department setting after cardiovascular surgery.

Purpose of the Study:

• To review recent advancements in the early diagnosis of poststernotomy mediastinitis (PSM).
• To highlight diagnostic strategies for PSM in the emergency department, particularly post-cardiac surgery.

Main Methods:

• Review of current diagnostic modalities for PSM.
• Focus on clinical examination, laboratory biomarkers (procalcitonin, neutrophil volume distribution width), and advanced imaging (contrast-enhanced CT).

Main Results:

• Morbidity and mortality of PSM remain high.
• Clinical assessment is foundational, but no single sign is pathognomonic.
• Procalcitonin and neutrophil volume distribution width show promise for rapid diagnosis.
• Contrast-enhanced CT effectively differentiates PSM from other chest pain causes.

Conclusions:

• Diagnostic speed and accuracy for PSM have improved with new imaging and lab techniques.
• PSM diagnosis is possible in symptomatic patients with specific clinical and CT findings, without waiting for microbiology.
• Further research is needed to enhance early diagnostic accuracy for PSM.