Single-incision laparoscopic inguinal herniorraphy with telescopic extraperitoneal dissection: technical aspects and potential benefits.

INTRODUCTION: Our recent prospective randomized controlled trial (NCT01660048) comparing single-incision laparoscopic (SIL) totally extraperitoneal (TEP) and multi-incision inguinal herniorraphy confirmed safety, efficacy and benefits of single-incision approach. This study (NCT01883115) aimed to assess safety, efficacy and cost effectiveness of telescopic extraperitoneal dissection. METHODS: Patients with inguinal/femoral hernias from February 2013 to February 2014 undergoing SILTEP herniorraphy with telescopic dissection were compared with patients who had previously undergone SILTEP herniorraphy with balloon dissection. Costs of different ports/trocars were analysed. RESULTS: There were 102 patients in telescopic compared to 51 in balloon dissection group; these had no significant differences in age, sex, body mass index, American Society of Anesthesiologists and pre-op visual analogue scores. Telescopic vs. balloon showed: post-operative pain-day one 2.5 vs. 2.5; p = 0.90, day seven 0 vs. 0; p = 0.02 (0 vs. 1; p < 0.01 for bilateral hernias); operation times-unilateral 48.0 vs. 48.0 min; p = 0.88 and bilateral 70.0 vs. 65.0 min; p = 0.66, length of hospital stay 1.0 vs. 1.0 day, analgesic intake (dextropropoxyphene) 6.0 vs. 6.0 tablets; p = 0.95, return to work/normal physical activities 7.0 vs. 7.0 days; p = 0.46 and cosmetic scar scores 24.0 vs. 24.0, respectively. There was no conversion to open surgery/need for additional ports in either group. Median scar length for telescopic group was 13.0 mm. Costs of disposable ports/trocars for telescopic and balloon groups were US$480 and $720, respectively. There were no morbidities/recurrences with follow-up of 2-36 months. CONCLUSIONS: Telescopic extraperitoneal dissection during SILTEP inguinal herniorraphy represents a safe and efficient alternative with potential cost savings compared to balloon dissection.

Potential benefits of single-port compared to multiport laparoscopic inguinal herniorraphy: a prospective randomized controlled study.

BACKGROUND: Multiple prospective studies have confirmed safety and efficacy of laparoscopic inguinal herniorraphy with single-port compared to multiport surgery. This prospective randomized controlled trial aimed to assess safety, efficacy and potential benefits of single-port total extraperitoneal inguinal herniorraphy beyond the learning curve. METHODS: All referred patients with inguinal/femoral hernias were enrolled from December 2011 to February 2013. Exclusion criteria included workers compensation cases. Identical balloon dissector, light-weight mesh and non-absorbable tacks were used in all cases. For single-port cases Triport™ was used while structural balloon trocar/inflation bulb for multiport cases. Results were analyzed with IBM(®) SPSS(®) version 22 for Windows. RESULTS: Participation rate was 100 % with 157 inguinal/femoral hernias in 100 patients: 51 randomized to single-port and 49 to multiport group. There was no conversion to open surgery/need for additional ports. There were no statistical differences between single-port and multiport groups with respect to age, sex, body mass index, American Society of Anesthesiologists scores, preoperative pain, hernia defect sizes and length of hospital stay. Operation times were equivalent for single-port and multiport 60.0 vs 61.0 min, P = 0.23, respectively. Significantly, single-port patients ingested fewer pain killers: 6 tablets vs 14 Dextropropoxyphene tablets, P < 0.001, experienced less pain (visual analog scores) on day 1 and 7 post-op op: 2.5 and 0, P < 0.001 compared to 4.5 and 2.5, P < 0.001, respectively, returned to work/normal physical activities 7 days quicker: 7.0 vs 14.0, P < 0.001 and had higher cosmetic scar scores at 6-week follow-up: 24 vs 21, P < 0.001, compared to multiport patients. There were no mortalities, morbidities or recurrences after follow-up of 6-21 months. CONCLUSIONS: Compared to multiport, single-port laparoscopic total extraperitoneal inguinal herniorraphy, when performed by a high-volume and highly dedicated hernia surgeon, resulted in significantly reduced postoperative pain, analgesic requirements, quicker return to work/normal activities, improved cosmesis, and equivalent safety and efficacy.

Study of a contact between two chromosomally monomorphic races of Sorex araneus L. (common shrew).

One hundred and twelve specimens of the common shrew from 21 populations in NE Poland were studied from an area of contact between chromosomal race II (metacentric chromosomes: hi, ko, gm, np) and race VII (ki, hn, gr, mp). No direct contact was found between the races in the study area; there were no mixed or hybrid populations. The shortest distance between populations of the two races was 1.2-1.6 km. Possible explanations for this pattern of the races' disjunction are discussed.