Exploring factors associated with failure of totally implanted vascular access devices in a regional and rural health service: a retrospective case-control study.

BACKGROUND: The assessment and management of totally implanted vascular access devices (TIVAD) prior to the administration of medications/fluids are vital to ensuring the risk of harm is mitigated. While numerous guidelines exist for the insertion and management of TIVAD, the level of evidence and external validity to support these guidelines is lacking. OBJECTIVES: The purpose of this study was to identify factors associated with suboptimal TIVAD placement and with failure of TIVAD. METHODS: A retrospective case-control study (n=80) was conducted at a regional hospital and health service in Australia. Binomial logistic regression analysis was performed using a backward selection approach to establish variables associated suboptimal TIVAD placement and with TIVAD failure. FINDINGS: Significant associations were identified between the patient's primary diagnosis and suboptimal TIVAD insertion. Specifically, a prior diagnosis of breast cancer was associated with a decreased probability of optimal TIVAD tip placement (OR=0.236 (95% CI 0.058 to 0.960), p=0.044). A statistically significant association between TIVAD failure and the log of the heparinised saline flush rate and rate of undocumented flushes was also established. Further research is needed to identify and assess whether modification of these variables improves initial totally implantable venous access ports placement and risk of subsequent failure.

Análisis del uso y complicaciones del acceso vascular periférico en la técnica del recambio plasmático terapéutico mediante centrifugación / Analysis of the use and complications of peripheral vascular access in centrifuge-based therapeutic plasma exchange

Introducción: El recambio plasmático terapéutico es una técnica extracorpórea de depuración sanguínea. El recambio plasmático terapéutico mediante el método de centrifugación (plasmacentrifugación) requiere flujos de 50 ml/min lo que permite realizar el intercambio con accesos vasculares periféricos. El principal objetivo de este estudio fué el de analizar el uso y las complicaciones del acceso vascular periférico en las sesiones de plasmacentrifugación. Material y Método: Estudio observacional descriptivo longitudinal sobre el análisis de complicaciones del acceso vascular periférico de las sesiones de plasmacentrifugación realizadas entre enero de 2017 y marzo de 2018. Resultados: Inclusión de un total de 93 sesiones de plasmacentrifugación, estas sesiones fueron llevadas a cabo en 9 pacientes con una mediana de 7 (P25:6; P75:10,5) sesiones por paciente. El 66,66% (n=6) fueron mujeres. En el 89,24% (n=83) de las sesiones se usó la centrifugación y en el 10,75% (n=10) la fotoaféresis. La etiología de enfermedad para estos pacientes fue: renal en el 55,55% (n=5) de los casos, neurológica en el 33,33% (n=3) de los casos y dermatológica en el 11,11% (n=1). De las 93 sesiones totales hubo problemas relacionados con la canalización de un acceso vascular periférico en el 52,69% de las sesiones (n=49). Conclusiones: Debido a que en más de la mitad de las sesiones se presentaron complicaciones en el abordaje del acceso vascular periférico, se concluye que es necesario el estudio vascular ambulatorio del paciente antes de la primera sesión, pudiendo ser útil el uso de la punción ecoguiada

Introduction: Therapeutic plasma exchange is an extracorporeal blood purification technique. Centrifuge-based therapeutic plasma exchange (plasmacentrifugation) requires flows of 50 ml/min which allows the exchange with peripheral vascular accesses. The main objective of this study is to analyze the use and complications of peripheral vascular access in plasmacentrifugation sessions. Material and Method: Descriptive observational longitudinal study on the analysis of peripheral vascular access complications in plasmacentrifugtion sessions between January 2017 and March 2018. Results: A total of 93 plasmacentrifugation sessions were included. Sessions were carried out in 9 patients with a median of 7 (P25:6; P75:10.5) per patient. 66.66% (n=6) were women. Centrifugation was used in 89.24% (n=83) of the sessions and in 10.75% (n=10) photoaferesis. The etiologies of the disease for these patients were: renal in 55.55% (n=5) of cases, neurological in 33.33% (n=3) of cases and dermatological in 11.11% (n=1). There were problems related to the channeling of peripheral vascular access in 52.69% of the sessions (n= 49). Conclusions: Because in more than half of the sessions there were complications in the channeling of peripheral vascular access, it is concluded that ambulatory vascular study of the patient is necessary before the first session, the use of ultrasound guided puncture may be useful