Hemicorea de larga duración asociada a trastorno metabólico

RESUMEN La corea asociada a la hiperglucemia representa un síndrome neurológico poco frecuente, mucho más común entre las mujeres asiáticas mayores. La fisiopatología sigue siendo controvertida y poco comprendida. Sin embargo, se han propuesto teorías como el aumento de la sensibilidad del receptor de dopamina, el infarto del núcleo estriado, el aumento del metabolismo del ácido gamma-aminobutírico y una alteración de la barrera hematoencefálica. Informamos que una mujer de 75 años de edad, de raza indígena, fue ingresada en el Departamento de emergencias debido a movimientos aleatorios, involuntarios y continuos severos en su brazo y pierna derecha que comenzaron 3 días antes, acompañados de síntomas osmóticos (polidipsia y poliuria). El nivel de glucosa capilar al ingreso fue 470,5 mg/dL, sin rastros de cetona en sangre u orina, mientras que el valor de hemoglobina glicosilada fue 15,4%. La resonancia magnética nuclear reportó hiperintensidad en T1 del núcleo lenticular izquierdo predominantemente a nivel del putamen sin otras alteraciones. Describimos los aspectos de la larga duración de los síntomas a pesar del tratamiento y el control metabólico adecuado.

ABSTRACT Chorea associated with hyperglycemia represents a rare neurological syndrome, much more common among older Asian women. The pathophysiology remains controversial and poorly understood. However, theories have been proposed such as increased dopamine receptor sensitivity, striated nucleus infarction, increased gamma-aminobutyric acid metabolism and an alteration of the blood-brain barrier. We report that a 75-year-old woman, of indigenous race, was admitted to the Emergency Department due to severe random, involuntary and continuous movements in her right arm and leg that began 3 days earlier, accompanied by osmotic symptoms (polydipsia and polyuria). The level of capillary glucose at admission was 470.5 mg/dL, without traces of ketone in blood or urine, while the value of glycosylated hemoglobin was 15.4%. Nuclear magnetic resonance imaging reported hyperintensity in T1 of the left lenticular nucleus predominantly at the putamen level without other alterations. We describe aspects of the long duration of symptoms despite adequate treatment and metabolic control.

Risk of Surgical Site Infection in Patients with Asymptomatic Bacteriuria or Abnormal Urinalysis before Joint Arthroplasty: Systematic Review and Meta-Analysis.

BACKGROUND: Routine screening and treatment for pre-operative asymptomatic bacteriuria (ASB) before joint arthroplasty are controversial. This systematic review and meta-analysis aimed to evaluate the impact of ASB and other bacterial colonization markers (BCM) observed in abnormal urine analyses, such as positive nitrites, leukocyturia, or positive leukocyte esterase in the risk of surgical site infections (SSIs) of joint arthroplasty patients. METHODS: Studies published between 1970 and 2017 that reported data on SSI and prosthetic joint infection (PJI) in patients after joint arthroplasty of the hip, knee, or shoulder with pre-operative ASB or BCM were included. A meta-analysis with random effect model was performed. RESULTS: Eleven studies were included (29,371 patients and 35,323 joints). The main procedures were total hip replacements (53.3%) and the mean follow-up period was 21.5 months, with 12 months being the minimum time of follow-up. A total of 2,400 cases (9.5%) reported pre-operative BCM (15%) or ASB (85%). The proportion of SSI was higher in patients with ASB (2.3% vs. 1.1%) (p < 0.001) and was related to a higher risk of SSI (odds ratio [OR] 2.89; 95% confidence interval [CI] 1.36-6.17), however, in only six cases (12.7%) was the SSI micro-organism correlated with the urine culture. Finally, antibiotic treatment for ASB did not reduce the SSI risk (OR = 0.82; 95% CI 0.34-1.97). CONCLUSIONS: Asymptomatic bacteriuria represent a relatively common finding among these patients and is related to a higher risk of SSI. However, the poor microbiologic correlation suggests that ASB could represent a surrogate marker for other conditions correlated with bacterial infection. Therefore, systematic urinalysis screening should be discouraged, whereas a complete risk assessment that considers comorbidities and past medical history should be promoted.

Clinical and neuroimaging spectrum of hyperglycemia-associated chorea-ballism: systematic review and exploratory analysis of case reports.

Hyperglycemia-associated chorea-ballism (HCB) is an infrequent neurological syndrome occurring predominantly in elderly females and in the setting of non-ketotic hyperglycemia (NKH). A systematic review was conducted in accordance with the PRISMA statement. Studies published between 1980 and 2018 that reported demographic, clinical, laboratory and imaging features from patients with HCB were screened. 136 studies describing 286 patients were included in the analysis. The patients included had a median age of 72 years; those with ketotic hyperglycemia (KH) were older (p<0.001). Women and NKH patients were the most frequently affected (63% and 92%, respectively). The median glucose level at admission was 420 mg/dL (IQR 328-535), and was significantly higher in KH (p=0.009). Moreover, the absence of a clear lesion on imaging studies and the finding of bilateral imaging evidence of lesions were each more frequent in the KH group (p=0.036 and p=0.008, respectively). 48 cases (19.4%) presented with bilateral CT/MRI lesions, having higher values of plasma osmolarity compared with the patients with unilateral lesions (p=0.011). Every patient received hypoglycemic treatment, but only 174 (60.84%) were prescribed neuroleptics. 213 patients (84.86%) showed a total recovery, after a median of 14 days (IQR 3-31). Bilateral chorea-ballism was supported by bilateral imaging evidence of involvement in only 60% of the cases (positive predictive value). Patients not prescribed neuroleptics, with negative lentiform nucleus involvement, and age within the third tertile (≥ 78 years) had an odds ratio of 6.6 (CI 95% 1.18-141.10) for a complete clinical recovery. Significant differences were identified between types of hyperglycemia and regarding the clinical and imaging laterality features. Furthermore, the predictor variables evaluated showed potential utility for assessing the prognosis of HCB patients.