December 07, 1997

An Unexpected Contributor to the Cause of Wound Dehiscence

Mariano Alvira, M.D.
Department of Pathology
Middletown Regional Hospital
Middletown, Ohio 45044
 

 

 
 
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Clinical History
Light Microscopy
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Clinical History

Clinical Presentation
A 43 year old female presented with signs and symptoms of gastroesophageal reflux disease (GERD). Endoscopic examination revealed the presence of a hiatal hernia and an esophageal diverticulum. Surgery was performed to repair the hiatus hernia and excise of the 2.5 cm esophageal diverticulum via a left sided thoracotomy.

Hospital Course
After surgery, the patient was placed on prophylactic antibiotics. One day after surgery she developed fever and leukocytosis and was reluctant to cough and deep breathing because of pain. Six days after surgery she developed bronchopneumonia. Cultures of the tracheal aspirate showed a mixed flora of gram positive and gram negative bacilli. She was placed on IV (intravenous) antibiotics. On the seventh postoperative day, she was cyanotic and incoherent. She was placed on assisted ventilation with 100% oxygen. The patient's condition worsened and nine days after surgery she developed wound infection and dehisence as well as an associated left sided empyema. Cultures grew anaerobes from the surgical wound and from the blood. The patient become comatose, developed septic shock and died sixteen days after surgical resection of the esophageal diverticulum and repair of the hiatal hernia.

Autopsy Examination
The main autopsy findings were a partial dehiscence of the esophageal surgical wound followed by an esophagothoracic fistula, mediastinitis and empyema of the the left pleural cavity with extension in the the abdominal cavity. Pre-mortem cultures from the empyema grew Bacteroides fragilis and Peptostreptococcus. Other autopsy findings showed hemorrhagic necrosis of both adrenal glands and severe myeloid hyperplasia of the bone marrow. The cause of death was attributed to gram negative septic shock due to a post surgical esophageal wound dehiscence.

Clinical Diagnoses
  1. Gram negative Septicemia
  2. Post surgical Dehisence of an esophageal wound
  3. Esophago-Thoracic Fistula
  4. Mediastinitis, Empyema
 
Light Microscopy
 
December 1997 Case-of-the-Month

 

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