Mechanisms of hernia recurrence after preperitoneal mesh repair. Traditional and laparoscopic.

OBJECTIVE: The authors provide an assessment of mechanisms leading to hernia recurrence after laparoscopic and traditional preperitoneal herniorrhaphy to allow surgeons using either technique to achieve better results. SUMMARY BACKGROUND DATA: The laparoscopic and traditional preperitoneal approaches to hernia repair are analogous in principle and outcome and have experienced a similar evolution over different time frames. The recurrence rate after preperitoneal herniorrhaphy should be low (< 2%) to be considered a viable alternative to the most successful methods of conventional herniorrhaphy. METHODS: Experienced surgeons supply specifics regarding the mechanisms of recurrence and technical measures to avoid hernia recurrence when using the preperitoneal prosthetic repair. Videotapes of laparoscopic herniorrhaphy in 13 patients who subsequently experienced a recurrence also are used to determine technical causes of recurrence. RESULTS: Factors leading to recurrence include surgeon inexperience, inadequate dissection, insufficient prosthesis size, insufficient prosthesis overlap of hernia defects, improper fixation, prosthesis folding or twisting, missed hernias, or mesh lifting secondary to hematoma formation. CONCLUSIONS: The predominant factor in successful preperitoneal hernia repair is adequate dissection with complete exposure and coverage of all potential groin hernia sites. Hematoma mesh lifting and inadequate lateral inferior and medial inferior mesh fixation represent the most common causes of recurrence for surgeons experienced in traditional or laparoscopic preperitoneal hernia repair.

Mechanisms and avoidance of esophageal perforation by anesthesia personnel during laparoscopic foregut surgery.

BACKGROUND: This study retrospectively assesses the mechanisms of 13 esophageal or gastric injuries resulting from dilator or nasogastric tube placement during laparoscopic foregut surgery and is intended to assist in determining methods of prevention. METHODS: Information regarding esophageal or gastric injury during laparoscopic foregut surgery was obtained from six experienced laparoscopic surgeons. The specific mechanisms of injury were determined by discussion with the operating surgeon and review of the operative reports. RESULTS: Eleven cases of esophageal or gastric perforation occurred during bougie insertion and two perforations occurred secondary to nasogastric tube placement during Nissen fundoplication or Heller myotomy. Five perforations required conversion to open operation for repair including two delayed thoracotomies. The 13 injuries occurred during the performance of 1,620 laparoscopic foregut operations for an overall incidence of 0.8%. CONCLUSION: Foregut injury resulting from esophagogastric intubation during laparoscopic surgery is more common than expected. Risk factors include esophageal anatomy, intrinsic pathologic changes of the esophagus, and inexperience. Prevention must focus on close communication between the surgeon and anesthesiologist and safe techniques of dilator insertion.