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STUDY OBJECTIVE: To assess the complication rates with the use of the levonorgestrel intrauterine system (LNG IUS) in adolescents with developmental disabilities. DESIGN: Retrospective chart review of all adolescents with developmental disabilities taken to the operating room for LNG IUS insertion between January 2000 and July 2009 at the Royal Children's Hospital, Melbourne, Australia. Cases identified from the surgical database, and medical records reviewed. MAIN OUTCOME MEASURES: Complication rates with LNG IUS use in adolescents with development disabilities: non-insertion, uterine perforation, infection, and expulsion. RESULTS: Fifty-six adolescents with developmental disabilities had an attempted LNG IUS insertion. The average age at insertion was 15.6 years (range 10.5-21.5 y). The LNG IUS was used as first line therapy in 14 cases (25%). Pre-insertion ultrasonography was ordered in 48% of cases, out of which 5 cases had uterine lengths <6 cm. Despite this, 4 of these cases had successful insertions. Two insertion attempts were abandoned intra-operatively (3.6%); one due to inadequate uterine length of 4 cm, and the other due to anatomic distortion. One spontaneous expulsion occurred at approximately 5 months (1.9%). Four IUDs were removed prematurely (7.4% withdrawal rate); 1 for persistent abdominal pain, 1 for irregular bleeding, and 2 for suspected malpositions. There were no documented cases of infection, perforation, or pregnancy. CONCLUSION: Our experience in this population has been very positive and confirms that complication rates are comparable to that in adults.

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BACKGROUND: Information regarding menstrual difficulties for adolescents with developmental disabilities and their families is limited. AIM: To assess the impact of menstruation on adolescents with developmental disabilities and their families, and to compare this to previously reported experiences of age-matched normal girls. METHODS: Families of girls aged 12-18 years with known disabilities, attending the Royal Children's Hospital, Melbourne, were recruited into a questionnaire based study evaluating issues of menstruation and associated problems, together with the consequent psychological, social and emotional impact on their families and carers. Information was sought regarding menstrual management strategies, outcome satisfaction and specific areas of family concern. RESULTS: 103 questionnaires were completed. The average age of participating girls was 15.11 years, mean menarchal age 12.3 years. 79 girls were postmenarchal. The severity of menstrual problems was similar to a normal population. 59 (76%) were happy with the impact of menses on their social activities. More than 50% sought menstrual advice before menarche. Advice seeking strongly correlated with disability severity (p=0.01) and impact of menses on social activities (p=0.01), which in turn were highly predictive of seeking assistance (p=0.005). Carer satisfaction with current management inversely correlated with treatment seeking behaviour (p=0.034). CONCLUSIONS: Menstrual characteristics in this population are similar to those without disabilities. There is a high level of parental anxiety regarding the impact of menses, particularly when disability is severe. Medical therapies may be required but information for families is lacking. Clinicians should play a proactive and educational role with families and adolescents with disabilities.

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STUDY OBJECTIVE: To evaluate the surgical approach used in the management of ovarian dermoid cysts in the pediatric and adolescent population. DESIGN: A descriptive retrospective chart review of all cases of ovarian dermoid cyst excision between January 2001 and January 2006. SETTING: The Hospital for Sick Children, Toronto, Canada. PARTICIPANTS: Forty-one female children and adolescents who underwent operative management of an ovarian dermoid cyst. MAIN OUTCOME MEASURES: Surgical approach (laparoscopy vs laparotomy), intraoperative cyst rupture, length of hospital stay, and postoperative complications. RESULTS: The mean age was 12.5 years. All cysts were unilateral. Twenty-three patients (56%) underwent laparoscopic cystectomy, 14 (34%) underwent cystectomy via laparotomy, and 4 (10%) oophorectomies were performed via laparotomy. Cyst size was significantly larger in the laparotomy group compared to the laparoscopy group (mean diameter 14.4 cm vs 7.1 cm, respectively, P < .001). A significantly higher rate of cyst rupture was experienced during laparoscopic cystectomy (100%), compared to excision via laparotomy (27.7%, P < .001). Length of hospital stay was significantly shorter in the laparoscopy group compared to the laparotomy group (median of 0 vs 3 days, respectively, P < .001). A single case in the laparoscopy group sustained a bladder injury and developed postoperative necrotizing fasciitis resulting in a prolonged hospitalization and recovery. There were no operative or postoperative complications related to cyst content spillage, regardless of the surgical approach. CONCLUSION: Laparoscopic cystectomy is a safe and effective method of managing ovarian dermoid cysts in the pediatric and adolescent patient population.

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This study investigated whether hyperoxic breathing (100% O(2)) or increasing oxidative substrate supply [dichloroacetate (DCA) infusion] would increase oxidative phosphorylation and reduce the reliance on substrate phosphorylation at the onset of high-intensity aerobic exercise. Eight male subjects cycled at 90% maximal O(2) uptake (VO(2 max)) for 90 s in three randomized conditions: 1) normoxic breathing and saline infusion over 1 h immediately before exercise (CON), 2) normoxic breathing and saline infusion with DCA (100 mg/kg body wt), and 3) hyperoxic breathing for 20 min at rest and during exercise and saline infusion (HYP). Muscle biopsies from the vastus lateralis were sampled at rest and after 30 and 90 s of exercise. DCA infusion increased pyruvate dehydrogenase (PDH) activation above CON and HYP (3.10 +/- 0.23, 0.56 +/- 0.08, 0.69 +/- 0.05 mmol x kg wet muscle(-1) x min(-1), respectively) and significantly increased both acetyl-CoA and acetylcarnitine (11.0 +/- 0.7, 2.0 +/- 0.5, 2.2 +/- 0.5 mmol/kg dry muscle, respectively) at rest. However, DCA and HYP did not alter phosphocreatine degradation and lactate accumulation and, therefore, the reliance on substrate phosphorylation during 30 s (CON, 51.2 +/- 5.4; DCA, 56.5 +/- 7.1; HYP, 69.5 +/- 6.3 mmol ATP/kg dry muscle) and 90 s of exercise (CON, 90.6 +/- 9.5; DCA, 107.2 +/- 13.0; HYP, 101.2 +/- 15.2 mmol ATP/kg dry muscle). These data suggest that the rate of oxidative phosphorylation at the onset of exercise at 90% VO(2 max) is not limited by oxygen availability to the active muscle or by substrate availability (metabolic inertia) at the level of PDH in aerobically trained subjects.

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