Comparison between retrograde intrarenal surgery and extracorporeal shock wave lithotripsy in the treatment of lower pole kidney stones up to 15 mm. Prospective, randomized study.

INTRODUCTION: Extracorporeal Shock Wave Lithotripsy (ESWL) is currently the recommended treatment for intra-renal calculi smaller than 2 cm. However the low Stone Free Rate (SFR) in lower pole calculi gives rise to new techniques, such us retrograde intrarenal surgery (RIRS), for improve the surgery outcomes. OBJECTIVE: To compare the efficacy of a treatment with ESWL with RIRS, in terms of SFR after surgery, in patients with kidney stones up to 15 mm in the lower pole. MATERIAL AND METHODS: A prospective study was carried out in order to assess the results of ESWL and RIRS in patients with lower pole stones less than 15 mm. Among a total of 55 patients, 31 were underwent to ESWL (Group 1) and the remaining 24 to RIRS (Group 2). Clinical data recorded, including general characteristics of each patient, were: calculi size, side, operative time, complications according to Clavien scale, SFR and the presence of residual fragments at 2 months post-treatment assessed by a CT scan. STATA 11 was used to perform the statistical analysis. RESULTS: There were no differences for general descriptors among groups with the exception of a significantly longer operative time for RIRS. The rates of SFR and residual fragments lesser than 3 mm. were lower in the RIRS group than in ESWL ones. RIRS also showed a lower rate of clinically significant fragments (0% vs 42.3%. P < .05). In the subgroup of patients with stones between 10/15 mm RIRS showed higher SFR (75% vs. 41.2%) and a lower rate of stones>3 mm (0% vs. 58.8%), being statistically significant (P < .05). Clavien III or higher complications were not reported in any of the groups. CONCLUSIONS: In the treatment of lower pole stone RIRS has the same results than ESWL in terms of SFR. Regarding absence of a clinically significant residual fragment, RIRS was superior to ESWL. A bigger sample size is required in order to confirm this results.

Nefrolitectomía percutánea "Tubeless" con catéter pigtail versus catéter ureteral externalizado por una noche: estudio comparativo, prospectivo y randomizado / Comparison of tubuless percutaneous nephrolithothotomy with pigtail catheter versus one nigth externalized ureteral catheter: comparative, prospective and randomized study

La nefrolitectomía percutánea (NLP) es una técnica establecida para el tratamiento de nefrolitiasis de gran tamaño que finaliza dejando una nefrostomía para hemostasia, drenaje y facilitar una eventual revisión. Nuestro grupo publicó recientemente un estudio prospectivo y randomizado que demostró la factibilidad y seguridad de realizar NLP “tubeless” (sin nefrostomía y con catéter pigtail) en un grupo seleccionado de pacientes (sin litiasis residual ni sangrado intra operatorio significativo, con acceso percutáneo único y tiempo operatorio menor a 2 horas).Objetivo: Comparar el uso de catéter ureteral tipo pigtail versus catéter ureteral externalizado por 24 horas en pacientes sometidos a NLP “tubeless”. Métodos: Sesenta y ocho pacientes sometidos a NLP ¨tubeless” fueron prospectivamente randomizados para el uso de catéter pigtail (Grupo 1) o catéter ureteral externalizado por una noche (Grupo 2). Se evaluó el dolor pos operatorio, estadía hospitalaria, caída del hematocrito y desarrollo de hematomas perirrenales objetivados por tomografía axial computarizada no contrastada. Para el análisis estadístico un p value <0,05 fue considerado significativo. Resultados: Los grupos fueron comparables en edad, distribución de sexo, índice de masa corporal y carga litiásica. No difirieron en dolor pos operatorio ni incidencia de hematomas. El Grupo 1 tuvo una estadía hospitalaria y una caída del hematocrito significativamente mayor. Conclusión: Los resultados sugieren que ambas conductas son factibles y seguras. La mayor estadía hospitalaria del Grupo 1 y la posterior necesidad de cistoscopia para retirar el catéter pigtail favorecen el uso de catéteres ureterales externalizados. Además se validan los criterios utilizados para la aplicación de la técnica tubeless en NLP...

Percutaneous nephrolithotomy (PNL) is an established technique for the management of big renal calculi that finishes leaving a nephrostomy tube to provide hemostasia, drainage and access for a second look when needed. We have recently published a prospective and randomized study demonstrating the feasibility and safety of performing “tubeless” PNL (without nephrostomy and leaving a pigtail catheter) in a selected group of patients (no significant residual lithiasis nor significant intraoperative bleeding, single access and less of 2 hours of surgery).Objective: Compare the use of pigtail catheter versus night-externalized ureteral catheter in patients subjected to “tubeless” PNL. Methods: Sixty eight patients undergoing “tubeless” PNL were prospectively randomized for the use of pigtail catheter (Group 1) or 24 hours-externalized ureteral catheter (Group 2).Postoperative pain, hospital stay length, hematocrit drop and evidence of peri-renal hematomas in non-enhanced computarized tomography were evaluated. For statistical analysis a p value <0.05 was considered significant. Results: Groups were similar in age, sex distribution, body mass index and stone burden. No differences in postoperative pain or incidence of hematomas were observed. Group 1 had a longer hospital stay and a greater hematocrit drop. Conclusion: These results suggest that both alternatives are feasible and safe. The longer hospital stay in Group 1 and the further need of cystoscopy to remove the pigtail catheter favors the use of 24 hours-externalized ureteral catheter. In addition, we validate our intraoperative criteria for performing “tubeless” PNL...

Utilidad del levetiracetam en el estado epiléptico / The value of levetiracetam in epileptic status

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[Genotype-phenotype correlation in myotonic dystrophy and prediction of clinical seriousness]. / Correlación genotipo-fenotipo en la distrofia miotónica y predicción de la gravedad clínica.

INTRODUCTION: Since description of the expansion of the number of CTG trinucleotides on the long arm of chromosome 19 in the 19 q 13.2-13.3 interval as being responsible for myotonic dystrophy (DM), many studies have established a direct relationship between the size of the expansion and the severity of the manifestations. OBJECTIVES: To evaluate the clinico-genetic correlation in a population with DM in Eastern Andalucia and to establish the predictive value of the increase in number of CTG repetitions with regard to clinical gravity. PATIENTS AND METHODS: A transverse study of persons from families known to have members with DM, classified with regard to the clinical gravity of their illness. Diagnosis was by means of clinical neurological, ophthalmological and neurophysiological examination and subsequently by genetico-molecular study, Southern blot, PCR, oligonucleotide CTC hybridization and Northern blot. RESULTS: Genetic studies confirmed the previous clinical diagnosis of DM in 78 persons, of the 145 studied, who came from 32 families. The average size of the mutation was 1-5 kb. There was close correlation between the size of the expansion and the clinical condition. Logistic repression studies permitted adequate classification in function of the size of the expansion in 87.23% of the cases of clinically relevant illness and in 90% of the cases in which the condition was not clinically relevant. CONCLUSIONS: There is a strong association between the clinical features of DM and the magnitude of the mutation. The size of the expansion has considerable predictive value in prognosis of the disorder. This may be useful when making decisions during prenatal diagnosis.

[Association of dystrophinopathy with facial-scapular-humeral dystrophy in the same family]. / Asociación de distrofinopatía y distrofia facio-escápulo-humeral en una misma familia.

We present the association of a distrophinopathy with a case of facioscupulohumeral dystrophy in two individuals belonging to the same family. The discrepancy in the seric creatinphosphokinase (CPK) of the two patients together with certain clinical data suggests the possibility that it is a question of two different processes. This impression was confirmed later through dystrophine analysis and genetic examination techniques. This case drew attention to the vital need today to insist on a combination of genetic examinations and dystrophine analysis when diagnosing muscular dystrophies, thus avoiding mistakes derived from diagnostic assumptions made on the basis of antecedents in the family involving neuromuscular disorders and the consequences that this might have regarding vital prognosis and advice to the family. This is the first case of coincidental association of these two processes within one family that has so far come to our knowledge.

[Brucellosis and acute inflammatory polyradiculoneuropathy]. / Brucelosis y polirradiculoneuropatía aguda inflamatoria.

Three patients with Guillain-Barré syndrome (GBS) during active brucellosis are reported: in one of them, who had an unfavorable outcome, the clinical features, the neurophysiological studies and the sural nerve biopsy were consistent with the axonal form of GBS. In the remaining two patients, who had a satisfactory course, the neurophysiological studies and the sural nerve biopsy disclosed the demyelinating character of the disease. We agree with other authors that the axonal and demyelinating forms of GBS should be separated, in view of their different clinical and possibly pathogenetic implications, both in GBS in general and in the form associated with brucellosis.