RESUMEN
Acute kidney injury (AKI) is the major complication of rhabdomyolysis. We aimed to identify the predictive factors for AKI and renal replacement therapy (RRT) requirement in poisoning-associated rhabdomyolysis. We conducted a cohort study including 273 successive poisoned patients (median age, 41 years) who developed rhabdomyolysis defined as creatine kinase (CK) >1000 IU/L. Factors associated with AKI and RRT requirement were identified using multivariate analyses. Poisonings mainly involved psychotropic drugs. AKI occurred in 88 patients (37%) including 43 patients (49%) who required RRT. Peak serum creatinine and CK were weakly correlated (R2 = 0.17, p < 0.001). Death (13%) was more frequent after AKI onset (32% vs. 2%, p < 0.001). On admission, lithium overdose (OR, 44.4 (5.3-371.5)), serum calcium ≤2.1 mmol/L (OR, 14.3 (2.04-112.4)), female gender (OR, 5.5 (1.8-16.9)), serum phosphate ≥1.5 mmol/L (OR, 2.0 (1.0-4.2)), lactate ≥ 3.3 mmol/L (OR, 1.2 (1.1-1.4)), serum creatinine ≥ 125 µmol/L (OR, 1.05 (1.03-1.06)) and age (OR, 1.04 (1.01-1.07)) independently predicted AKI onset. Calcium-channel blocker overdose (OR, 14.2 (3.8-53.6)), serum phosphate ≥ 2.3 mmol/L (OR, 1.6 (1.1-2.6)), Glasgow score ≤ 5 (OR, 1.12; (1.02-1.25)), prothrombin index ≤ 71% (OR, 1.03; (1.01-1.05)) and serum creatinine ≥ 125 µmol/L (OR, 1.01; (1.00-1.01)) independently predicted RRT requirement. We identified the predictive factors for AKI and RRT requirement on admission to improve management in poisoned patients presenting rhabdomyolysis.
RESUMEN
INTRODUCTION: The biocompatibility of the polysiloxane breast implant has been studied moderately. The aging of these implants due to lipid penetration and the release of polymerization impurities, such as Platine or octamethylcyclotetrasiloxane (named D4), has already been documented. Since these studies, manufacturing procedures have been improved; thus, the security of breast implants has also improved. Although polymerization and the choice of monomer influence the shell properties, few studies have compared these together in breast implants. Our study compares the permeability and mechanical resistance of 3 breast expander shells after in vivo and in vitro aging. RESULTS: In vitro, all tested shells quickly sorbed linear molecules, such as fatty acids, and released siloxane impurities. The penetration of a molecule with steric hindrance, such as cholesterol, is slower. Allergan shells have the highest rates of molecule sorption and siloxane release. In vivo, after implantation, Allergan shells lost their initial mechanical properties over time. This observation was not found for mentor shells. For all brands, many biological molecules penetrate the shells, among which cholesterol and fatty acids are always present. DISCUSSION: The aging of polysiloxane shells depends on the sorption of many biological molecules and the release of siloxane impurities. The siloxanes are impurities and / or degradation products that are due to aging. Moreover, according to our results, the shells act as matrices that separate molecules according to their chemical and physical properties. CONCLUSION: Not all polysiloxane expander shells have the same properties during aging. The manufacturing procedures and the choice of siloxane monomers are the two most probative factors that explain the observed differences.
