Laparoscopic colectomy for diverticulitis.
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Adult↗
Biomedical subjects
Adrian Park
Publications and source records attributed to Adrian Park.
Laparoscopic ventral incisional hernia repair: a more effective alternative to conventional repair of recurrent incisional hernia.
Conventional repair of recurrent ventral incisional hernia is associated with a higher recurrence rate (30%-50%) than repair of primary incisional hernia (11%-20%). Laparoscopic incisional hernia repair (LIHR) can significantly reduce the recurrence rate of primary hernia to less than 5%. In this study, we evaluate the efficacy of repairing recurrent incisional hernia laparoscopically. One-hundred and seventy consecutive patients undergoing LIHR between January 1995 and December 2002 were prospectively reviewed. Patients with recurrent incisional hernia (n=69) were compared to patients with primary incisional hernia (n=101). Patient demographics and perioperative and postoperative data were recorded prospectively. Follow-up was obtained from office visits and telephone interviews. Statistical analysis was performed using the Student t test and the chi(2) test. Results are expressed as means +/- standard deviation. The patients with recurrent incisional hernia had a mean of 1.9 +/- 1.3 previous repairs, higher body mass index (BMI) (34 +/- 6 kg/m(2) vs. 33 +/- 8 kg/m(2), P=0.46), larger defect size (123 +/- 115 cm(2) vs. 101 +/- 108 cm(2), P=0.06), and longer operative time (119 +/- 61 minutes vs. 109 +/- 44 minutes, P=0.11). The complication rate was higher in the recurrent group (28% vs. 11%, P=0.01), but the recurrence rate was not different (7% vs. 5%, P=0.53). The mean time to recurrence was significantly shorter in the recurrent group (3 +/- 2 months vs. 14 +/- 7 months, P < 0.0001). The mean follow-up interval was 19 +/- 18 months in the recurrent group and 27 +/- 20 months in the primary group. Although laparoscopic repair of recurrent incisional hernia resulted in a higher recurrence and complication rate than laparoscopic repair of primary incisional hernia, the rates were lower than those reported for conventional repair of recurrent incisional hernia. Laparoscopic repair of recurrent incisional hernia is an effective alternative to conventional repair.
Chi-Square Distribution↗
Laparoscopic fundoplication.
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Fundoplication↗
Ongoing deficits in resident training for minimally invasive surgery.
Patient preference has driven the adoption of minimally invasive surgery (MIS) techniques and altered surgical practice. MIS training in surgical residency programs must teach new skill sets with steep learning curves to enable residents to master key procedures. Because no nationally recognized MIS curriculum exists, this study asked experts in MIS which laparoscopic procedures should be taught and how many cases are required for competency. Expert recommendations were compared to the number of cases actually performed by residents (Residency Review Committee [RRC] data). A detailed survey was sent nationwide to all surgical residency programs (academic and private) known to offer training in MIS and/or have a leader in the field. The response rate was approximately 52%. RRC data were obtained from the resident statistics summary report for 1998-1999. Experts identified core procedures for MIS training and consistently voiced the opinion that to become competent, residents need to perform these procedures many more times than the RRC data indicate they currently do. At present, American surgical residency programs do not meet the suggested MIS case range or volume required for competency. Residency programs need to be restructured to incorporate sufficient exposure to core MIS procedures. More expert faculty must be recruited to train residents to meet the increasing demand for laparoscopy.
Cholecystectomy, Laparoscopic↗
Minimal adhesions to ePTFE mesh after laparoscopic ventral incisional hernia repair: reoperative findings in 65 cases.
OBJECTIVES: Laparoscopic ventral incisional hernia repair involves intraabdominal placement of a synthetic mesh, and the possibility of formation of severe visceral adhesions to the prosthesis is a principal concern. Little clinical information based on reoperative findings is available about adhesions to biomaterials placed intraabdominally. We conducted a multiinstitutional study of adhesions to implanted expanded polytetrafluoroethylene (ePTFE) mesh at reoperation in patients who had previously undergone laparoscopic incisional hernia repair done with the same mesh implantation technique. METHODS: Nine surgeons retrospectively assessed the severity of adhesions to ePTFE mesh at reoperation in 65 patients. For each case, adhesions were assigned a score of 0 to 3, with 0 indicating no adhesions and 3 severe adhesions. RESULTS: The mean time from mesh implantation to reoperation was 420 days (range, 2 to 1739 days). No adhesions were observed in 15 cases. Forty-four cases received an adhesion score of 1, and 6 cases a score of 2; no scores of 3 were assigned. Thus, 59 patients (91%) had either no or filmy, avascular adhesions. No enterotomies occurred during adhesiolysis. CONCLUSIONS: In this large series of reoperations after laparoscopic incisional hernia repair, no or minimal formation of adhesions to implanted ePTFE mesh was observed in 91% of cases, and no severe cohesive adhesions were found. Comparative analyses of newer materials based on clinical reoperative findings are warranted to assess the safety of intraabdominally placed meshes.
Adult↗