Pneumomediastinum and pneumoperitoneum after blunt chest trauma: The Macklin Effect.

Abstract Background: Pneumomediastinum creation, in blunt chest trauma, results from Mackin effect in more than 95% of cases. Objectives: In this article we report two cases of blunt chest trauma, underlining the relationship between Macklin effect, pneumomediastinum and pneumoperitoneum, and analysing conservative and invasive treatment. Case reports: We report two cases of blunt chest trauma with Pneumomediastinum creation and no evidence of airway lesions. The first patient presented with malignant pneumomediastinum, created by Macklin effect, and pneumoperitoneum with intra-abdominal hypertension. He underwent invasive treatment. The second case shows how Macklin effect can be self-limiting. This patient underwent conservative treatment. Conclusions: In any case of post-traumatic pneumomediastinum, the Macklin effect should be suspected. Clinical observation is the treatment of choice since Macklin effect is self-limiting. There are some life-threatening event, like malignant pneumomediastinum and intra-abdominal hypertension that must be relieved and treated mmediately

VAC (Vacuum Assisted Closure) treatment in Fournier's gangrene: personal experience and literature review.

Fournier's gangrene (FG) is a rapidly developing necrotizing fasciitis that originates in genital and perineal region. The mortality rate is high and requires prompt diagnosis, antibiotic treatment and extensive necrosectomy with derivative colostomy. Vacuum Assisted Closure (VAC) is a wound care system of paramount importance in the treatment of complex wounds, including the perineum. We evaluated 6 cases of FG (males, mean age: 54.6 yrs) of the last 3 years (February 2008-August 2010). All patients were diabetics. We used intravenous antibiotic treatment and early surgical debridement with colostomy, followed by immediate positioning of a VAC device (NP 125-200 mmHg). The dressing changes were done every 3-4 days. Hyperbaric oxygen therapy (HBOT) was given only to one patient. Microbiological etiology was assessed by multiple cultures to tailor the antimicrobial treatment. The VAC therapy reduces the number of dressings and the hospital length of stay (LOS), in agreement with the literature; in one of the cases a secondary reconstructive surgical intervention was possible. The colostomy was reversed in all patients within 3 months. Negative pressure is a time saving device, reducing days of hospitalization, patient's discomfort and number of medications. The possibility of a early reconstructive surgery improves significantly quality of life