Desarrollo e implementacion de un proyecto de comunicacion efectiva de valores criticos en un laboratorio publico pediatrico / Development and implementation of an effective communication project of critical values in a pediatric public laboratory / Desenvolvimento e implementação de um projeto de comunicação efetiva de valores críticos em um laboratório público pediátrico

Los valores criticos (VC) son resultados de laboratorio que deben comunicarse inmediatamente al profesional responsable, representan una amenaza para la vida del paciente y requieren atencion clinica urgente. La deteccion y comunicacion efectiva de valores criticos (CEVC) impacta directamente en la seguridad del paciente y es responsabilidad del laboratorio. Entes acreditadores y la International Organization of Standardization (ISO- 15189:2012) incluyen los VC entre sus requisitos. En 2017 se desarrollo un proyecto para garantizar la CEVC en el Hospital Garrahan. Se reviso el proceso de CEVC documentado en 2015. Se realizaron encuestas y reuniones dentro del laboratorio que evidenciaron falta de adherencia al mismo. Los VC no se comunicaban de la forma estandarizada y frecuentemente no se registraban. Se evaluaron las causas utilizando el diagrama de Ishikawa, lo que reflejo ausencia de consenso para elaborar el documento inicial. Se realizaron encuestas y reuniones intralaboratorio y con los servicios medicos, para consensuar aspectos relacionados con la CEVC y umbrales para diferentes analitos. Se acordo un nuevo listado de VC y otro de valores de informe inmediato en los que era necesario garantizar la comunicacion efectiva, aunque no requirieran intervencion medica urgente. Se protocolizo la CEVC: informe telefonico al medico tratante registrado en un formulario estandar. Se redacto y difundio un nuevo procedimiento. Se desarrollo un sistema de monitoreo con indicadores de calidad. Promover la mejora continua y desarrollar proyectos interdisciplinarios favorece la atencion centrada en el paciente y su familia. El trabajo mancomunado de diferentes servicios permitio consensuar la lista de VC y un protocolo de comunicacion acorde a las necesidades de esta institucion pediatrica.

The critical values (CV) are laboratory results that should be reported immediately to the responsible professionals, representing a threat to the patient's life and being required for urgent clinical attention. Detection and effective communication of the critical values (ECCV) impacts directly on the patient's College of Americans Pathologists (CAP), Joint Commission on Accreditation of Health Care Organizations (JCAHO), Clinical Laboratory Improvements Amendments (CLIA) e safety and it is the laboratory's responsibility. Accrediting bodies and the International Organization of Standardization (ISO 15189:2012) include CV among their mandatory requisites. In 2017, a project was developed to guarantee the ECCV at the Hospital Garrahan. The ECCV process documented in 2015 was reviewed. Surveys and assemblies were carried out within the laboratory, finding evidence of the lack of compliance with standard procedures. The CV were neither reported according to the expected standardized rules nor registered regularly. The causes were evaluated using the Ishikawa diagram, which reflected the absence of consensus to elaborate the initial document. Surveys and intra-laboratory assemblies were performed alongside with medical Departments staff, in order to come to terms on aspects related to the ECCV as well as thresholds for different analytes. Agreement was reached on a new CV list and another list for immediate reporting, in which it is essential to guarantee effective communication, even though they do not require urgent medical intervention. The ECCV was standardized through a telephone report to the treating physician registered in standard forms. A new operation procedure was edited and shared. A monitoring system with quality indicators was developed. Promoting continuous improvements as well as developing interdisciplinary projects enhance patient and family-centred care. The joint work of different Service Departments made it possible to issue the CV list and a communication protocol according to the needs of this pediatric institution.

Os valores críticos (VC) são resultados laboratoriais que devem ser imediatamente comunicados ao profissional responsável, representam uma ameaça para a vida do paciente e requerem atenção clínica urgente. A detecção e comunicação efetiva de valores críticos (CEVC) é de responsabilidade do laboratório e impacta diretamente na segurança do paciente. Organismos de acreditação e a Organização Internacional de Padronização (ISO-15189: 2012) incluem os VC entre seus requisitos. Em 2017, um projeto foi desenvolvido para garantir a CEVC no Hospital Garrahan. O processo do CEVC documentado em 2015 foi revisado. Pesquisas e reuniões foram realizadas dentro do laboratório, evidenciando a falta de adesão a ele. VC não se comunicavam de maneira padronizada e frequentemente não se registravam. As causas foram avaliadas, usando o diagrama de Ishikawa, refletindo a ausência de consenso para preparar o documento inicial. Pesquisas e reuniões foram realizadas dentro do laboratório e com os serviços médicos, para acordar aspectos relacionados à CEVC e limiares para diferentes analitos. Uma nova listagem de VC foi acordada e outra de valores de relatório imediato nas quais era necessário garantir a comunicação efetiva, mesmo que não exijissem intervenção médica urgente. O CEVC foi registrado: relatório telefônico para o médico responsável pelo tratamento registrado em um formulário padrão. Um novo procedimento foi escrito e divulgado. Um sistema de monitoramento com indicadores de qualidade foi desenvolvido. Promover a melhoria contínua e desenvolver projetos interdisciplinares favorece o cuidado centrado no paciente e sua família. O trabalho conjunto de diferentes serviços permitiu chegar a um consenso sobre a lista de VC e um protocolo de comunicação de acordo com as necessidades dessa instituição pediátrica.

Proteinuria, (99m) Tc-DTPA Scintigraphy, Creatinine-, Cystatin- and Combined-Based Equations in the Assessment of Chronic Kidney Disease.

Background. Precise estimation of the glomerular filtration rate (GFR) and the identification of markers of progression are important. We compared creatinine, cystatin, and combined CKD-EPI equations with (99m)Tc-DTPA scintigraphy to measure GFR and proteinuria as markers of progression. Methods. Cross-sectional, observational study including 300 subjects. CKD was classified by (99m)Tc-DTPA scintigraphy. Determinations. Creatinine, 24-hour creatinine clearance, cystatin, Hoek formula, and creatinine, cystatin, and combined CKD-EPI equations. Results. In the global assessment, creatinine CKD-EPI and combined CKD-EPI equations yielded the highest correlations with (99m)Tc-DTPA: ρ = 0.839, P < 0.0001 and ρ = 0.831, P < 0.0001. Intergroup analysis versus (99m)Tc-DTPA: control G, creatinine clearance ρ = 0.414, P = 0.013; G3, combined CKD-EPI ρ = 0.5317, P < 0.0001; G4, Hoek ρ = 0.618, P < 0.0001, combined CKD-EPI ρ = 0.4638, P < 0.0001; and G5, creatinine clearance ρ = 0.5414, P < 0.0001, combined CKD-EPI ρ = 0.5288, P < 0.0001. In the global assessment, proteinuria displayed the highest significant correlations with cystatin ( ρ = 0.5433, P < 0.0001) and cystatin-based equations (Hoek: ρ = -0.5309, P < 0.0001). When GFR < 60 mL/min: in stage 3, proteinuria-cystatin ( ρ = 0.4341, P < 0.0001); proteinuria-Hoek ( ρ = -0.4105, P < 0.0001); in stage 4, proteinuria-cystatin ( ρ = 0.4877, P < 0.0001); proteinuria-Hoek ( ρ = -0.4877, P = 0.0026). Conclusions. At every stage of GFR < 60 mL/min, cystatin-based equations displayed better correlations with (99m)Tc-DTPA. Proteinuria and cystatin-based equations showed strong associations and high degrees of correlation.

Creatinine- vs. cystatin C-based equations compared with 99mTcDTPA scintigraphy to assess glomerular filtration rate in chronic kidney disease.

BACKGROUND: In chronic kidney disease (CKD), accurate estimation of the glomerular filtration rate (GFR) is mandatory. Gold standard methods for its estimation are expensive and time-consuming. We compared creatinine- versus cystatin C-based equations to measure GFR, employing (99m)Tc-DTPA scintigraphy as the gold standard. METHODS: This was a prospective cross-sectional observational study including 300 subjects. CKD was defined according to K/DOQI guidelines, and patients were separated into groups: stage 1 (G1), n=26; stage 2 (G2), n=52; stage 3 (G3), n=90; stage 4 (G4), n=37; stage 5 (G5), n=60; and control group, n=35. Creatinine-based estimates were from 24-hour creatinine clearance using the Walser formula, Cockcroft-Gault, MDRD-4 and CKD-EPI; cystatin C equations used were Larsson, Larsson modified equation, Grubb and Hoek. RESULTS: Age and body mass index were different among groups; proteinuria, hypertension, diabetes and primary glomerulopathies significantly increased as CKD worsened. In the global assessment, CKD-EPI and Hoek gave the highest correlations with (99m)Tc-DTPA: rho=0.826, p<0.001 and rho=0.704, p<0.001, respectively. Most significant linear regressions obtained: CKD-EPI vs. (99m)Tc-DTPA, Hoek vs. (99m)Tc-DTPA and CKD-EPI vs. Hoek. However, important differences emerged when each group was analyzed separately. Best significant correlations obtained with (99m)Tc-DTPA: control group, creatinine clearance rho=0.421, p=0.012; G1, Crockoft-Gault rho=0.588, p=0.003; G2, CKD-EPI rho=0.462, p<0.05; G3, CKD-EPI rho=0.508, p<0.001; G4, Hoek rho=0.618, p<0.001; G5, CKD-EPI rho=0.604, p<0.001. CONCLUSIONS: At GFR <60 ml/min, CKD-EPI and Hoek equations appeared to best correlate with (99m)TcDTPA. In controls and at early stages of CKD, creatinine-based equations correlated better with (99m)Tc-DTPA, with CKD-EPI being the one with the best degree of agreement.