Left-colon antegrade enema (LACE): Long-term experience with the Macedo-Malone approach.

AIMS: We evaluated the long-term results with a left antegrade continence enema (LACE) approach: "Macedo-Malone (MM) procedure" to define parameters such as clinical durability of the technique and patients' compliance with the method. METHODS: We reviewed the medical records of all patients that underwent the MM procedure in our institution since 2001 and conducted a telephonic interview to investigate the use of the enema and satisfaction with the procedure. RESULTS: Thirty-five MM procedures were performed, but eight patients lost to follow-up were excluded. Fifteen patients (55%) were female. Myelomeningocele was the clinical diagnoses in 25 (93%). Mean age at surgery was 9 years (3-27 years) and mean follow-up was 75 months (median: 56 months). The indication for LACE was clinically intractable constipation with fecal leakage. Most patients still used the stoma regularly to do the enema (74%). Mean washout time was 27 min (2-90 min). The revision rate due to stenosis was 22.2% (6/27) and all underwent suprafascial revision. We performed one classical MACE by infrafascial approach as a salvage procedure. Overall reoperation rate was 25.8% and fecal continence was 89%. There were no reports of leakage through the stoma. Among patients who still used the stoma, 74% were satisfied with surgery and would strongly recommend the procedure to another patient. CONCLUSIONS: The MM procedure is a straightforward procedure, which can be performed in 15-20 min, avoids additional entero-entero anastomosis, precludes the use of the appendix, and has shown comparable results to either "classical" MACE or other LACE variants. Neurourol. Urodynam. 36:111-115, 2017. © 2015 Wiley Periodicals, Inc.

Gas concentration measurement by optical similitude absorption spectroscopy: methodology and experimental demonstration.

We propose a new methodology to measure gas concentration by light-absorption spectroscopy when the light source spectrum is larger than the spectral width of one or several molecular gas absorption lines. We named it optical similitude absorption spectroscopy (OSAS), as the gas concentration is derived from a similitude between the light source and the target gas spectra. The main OSAS-novelty lies in the development of a robust inversion methodology, based on the Newton-Raphson algorithm, which allows retrieving the target gas concentration from spectrally-integrated differential light-absorption measurements. As a proof, OSAS is applied in laboratory to the 2ν3 methane absorption band at 1.66 µm with uncertainties revealed by the Allan variance. OSAS has also been applied to non-dispersive infra-red and the optical correlation spectroscopy arrangements. This all-optics gas concentration retrieval does not require the use of a gas calibration cell and opens new tracks to atmospheric gas pollution and greenhouse gases sources monitoring.

Lidar remote sensing of laser-induced incandescence on light absorbing particles in the atmosphere.

Carbon aerosol is now recognized as a major uncertainty on climate change and public health, and specific instruments are required to address the time and space evolution of this aerosol, which efficiently absorbs light. In this paper, we report an experiment, based on coupling lidar remote sensing with Laser-Induced-Incandescence (LII), which allows, in agreement with Planck's law, to retrieve the vertical profile of very low thermal radiation emitted by light-absorbing particles in an urban atmosphere over several hundred meters altitude. Accordingly, we set the LII-lidar formalism and equation and addressed the main features of LII-lidar in the atmosphere by numerically simulating the LII-lidar signal. We believe atmospheric LII-lidar to be a promising tool for radiative transfer, especially when combined with elastic backscattering lidar, as it may then allow a remote partitioning between strong/less light absorbing carbon aerosols.

Gastrostomia cirúrgica: indicações atuais e complicações em pacientes de um hospital universitário / Surgical gastrostomy: current indications and complications in a university hospital

OBJETIVO: revizar as indicações e as complicações observadas após a realização de gastrostomias cirúrgicas em pacientes internados em um hospital universitário público de ensino. MÉTODOS:estudo retrospectivo não randomizado de revisão dos prontuários médicos dos pacientes submetidos à gastrostomia cirúrgica nos últimos cinco anos, sobre as indicações e complicações. RESULTADOS: no período de 2007 a 2011, 86 pacientes foram submetidos à gastrostomias cirúrgicas para nutrição enteral. A técnica operatória utilizada foi a de Stamm na totalidade dos casos. Os homens constituíram 76 (88%) dos casos e a média de idade foi 58,4 anos, a idade máxima 87 anos e a mínima de 19 anos. Foram observadas 16 (18,60%) complicações consideradas menores, 17 (19,76%) complicações graves e oito (9,3%) óbitos peri-operatórios. CONCLUSÃO: as gastrostomias cirúrgicas, embora consideradas procedimentos de menor porte, não são isentas de complicações e mortalidade. A técnica operatória de Stamm, apesar das complicações relatadas, é de fácil execução, manuseio e oferece segurança.

OBJECTIVE: To analyze the surgical gastrostomies performed at a public University Hospital, their indications and complications. METHODS: We conducted a retrospective, nonrandomized review of medical records of patients who underwent surgical gastrostomy from 2007 to 2011; RESULTS: , In the period of studied, 86 patients underwent surgical gastrostomies for enteral nutrition. The Stamm technique was employed in all cases. Men constituted 76 (88%) of the cases and the mean age was 58.4 years, the maximum age being 87 years and the minimum 19. We observed 16 (18.60%) minor complications, 17 (19.76%) serious complications and 8 (9.3%) perioperative deaths. CONCLUSION: Surgical gastrostomy, while considered a smaller procedure, is not without complications and mortality. The Stamm technique, despite the complications reported, is easy to perform and to handle, as well as safe.

Surgical gastrostomy: current indications and complications in a university hospital.

OBJECTIVE: To analyze the surgical gastrostomies performed at a public University Hospital, their indications and complications. METHODS: We conducted a retrospective, nonrandomized review of medical records of patients who underwent surgical gastrostomy from 2007 to 2011; RESULTS: , In the period of studied, 86 patients underwent surgical gastrostomies for enteral nutrition. The Stamm technique was employed in all cases. Men constituted 76 (88%) of the cases and the mean age was 58.4 years, the maximum age being 87 years and the minimum 19. We observed 16 (18.60%) minor complications, 17 (19.76%) serious complications and 8 (9.3%) perioperative deaths. CONCLUSION: Surgical gastrostomy, while considered a smaller procedure, is not without complications and mortality. The Stamm technique, despite the complications reported, is easy to perform and to handle, as well as safe.