Post-Pericardiotomy Syndrome and Elevated White Blood Cell Count
Yes, the peripheral blood complete blood count in post-pericardiotomy syndrome typically shows an elevated white blood cell count (leukocytosis), which is a key marker of the systemic inflammatory response that characterizes this condition.
Diagnostic Criteria and Laboratory Findings
The 2015 ESC Guidelines explicitly state that diagnosis of post-cardiac injury syndromes (including post-pericardiotomy syndrome) requires demonstration of inflammatory activity 1. The guidelines specifically identify elevated white blood cell count (leukocytosis) as one of the markers of inflammatory reaction needed to establish the diagnosis 1.
Supporting Laboratory Evidence
The diagnostic framework includes:
- Elevated C-reactive protein (CRP)
- Elevated erythrocyte sedimentation rate (ESR)
- Elevated white blood cell count (leukocytosis) 1
These inflammatory markers are considered common and supportive findings that help monitor disease activity and treatment efficacy 1.
Clinical Context and Timing
Post-pericardiotomy syndrome represents an autoimmune/inflammatory phenomenon following cardiac surgery 1. The condition involves:
- Pleuropericardial damage triggering both local and systemic inflammatory/immune responses 2
- Symptoms developing over several days to weeks (subacute course) 1
- Chest pain, pericardial rub, dyspnea, and low-grade fever accompanying the laboratory abnormalities 1
Research Evidence on Postoperative Leukocytosis
A 2016 study demonstrated that postoperative white blood cell count and neutrophil count were significantly higher in patients who developed post-pericardiotomy syndrome compared to controls (p < 0.001) 3. The postoperative WBC count was independently associated with PPS development (OR 1.6,95% CI 1.36-2.03, p < 0.001) 3.
Important Clinical Distinction
The demonstration of systemic inflammation (including leukocytosis) is essential to differentiate post-pericardiotomy syndrome from simple mechanical consequences of surgery such as asymptomatic postoperative effusions 1. This distinction is critical because:
- Asymptomatic postoperative effusions without systemic inflammation do not require anti-inflammatory treatment 1
- True post-pericardiotomy syndrome with inflammatory markers warrants empiric anti-inflammatory therapy 1
Recommended Diagnostic Approach
When evaluating suspected post-pericardiotomy syndrome, the ESC Guidelines recommend 1:
- Routine blood tests including white blood cell count with differential
- Markers of inflammation (CRP and/or ESR)
- Physical examination, ECG, echocardiography, and chest X-ray
The presence of leukocytosis combined with other inflammatory markers supports the diagnosis and justifies treatment initiation.