Clinical Report: Sternal Osteomyelitis After Median Thoracotomy Analysis
Overview
This prospective cohort study analyzed 47 patients undergoing en bloc sternectomy for deep sternal wound infections post median thoracotomy. Histopathological examination revealed high prevalence of bone inflammation, with body mass index and left internal mammary artery (LIMA) harvest identified as significant risk factors influencing infection severity.
Background
Sternal osteomyelitis (SO) can occur primarily or secondary to median thoracotomy after cardiac surgery, with secondary SO being more common and complicating 0.2–4.4% of cases. It is part of deep sternal wound infections involving bone and mediastinal tissues. Treatment often requires surgical excision of infected bone and flap coverage, with complete sternectomy performed to eradicate infection safely. This study aimed to characterize pathological changes in SO and identify risk factors affecting sternal bone infection.
Data Highlights
Parameter
Findings
Number of patients
47
Median age (range)
66 (45–81) years
Gender
10 females, 37 males
Inflammation prevalence in sections
76.6% to 93.6%
Significant risk factors
Body mass index (p=0.001 to 0.004), LIMA harvest (p=0.005 in section A)
Inflammation was present in 76.6% to 93.6% of sternal bone sections examined histologically.
Body mass index correlated significantly with bone inflammation in specific sternal sections (A, C, E).
LIMA harvest during coronary bypass surgery significantly influenced inflammation in section A of the sternum.
No significant differences in inflammation were found between left and right sternal sides overall, though some section-specific differences existed in LIMA patients.
Common comorbidities and surgical factors such as diabetes, smoking, valve surgery, and prosthetic replacement showed no significant impact on bone inflammation.
Clinical Implications
Clinicians should recognize that higher body mass index and LIMA harvest are associated with increased sternal bone inflammation following median thoracotomy. These factors may warrant closer postoperative monitoring and tailored infection prevention strategies. Complete en bloc sternectomy with histopathological evaluation remains critical for managing deep sternal wound infections effectively.
Conclusion
This study highlights the high prevalence of sternal bone inflammation in patients with deep sternal wound infections post median thoracotomy and identifies body mass index and LIMA harvest as key risk factors. Understanding these associations can guide surgical planning and postoperative care to improve outcomes.
References
Author/Source/Year -- Investigation of Sternal Osteomyelitis Following Median Thoracotomy
A VHA study across 11 vendors finds AI-generated primary care notes score lower than clinician-written notes, with the largest deficits in thoroughness, organization, and usefulness
