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Vol. 149. Issue 11.
Pages 477-482 (December 2017)
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Vol. 149. Issue 11.
Pages 477-482 (December 2017)
Original article
Right-sided infective endocarditis in cardiac device carriers: Clinical profile and prognosis
Endocarditis infecciosa derecha en portadores de dispositivos cardiacos: perfil clínico y pronóstico
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Carlos Ortiz-Bautistaa,
Corresponding author
ortiz.bautista.carlos@gmail.com

Corresponding author.
, Javier Lópeza, Pablo Elpidio García-Granjaa, Isidre Vilacostab, Teresa Sevillaa, Cristina Sarriác, Carmen Olmosb, Carlos Ferrerab, Carmen Sáezc, Ana Puertoa, José Alberto San Romána
a Instituto de Ciencias del Corazón (ICICOR), Hospital Clínico Universitario de Valladolid, Valladolid, Spain
b Hospital Clínico Universitario San Carlos, Madrid, Spain
c Servicio de Medicina Interna-Infecciosas, Instituto de Investigación del Hospital La Princesa, Madrid, Spain
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Tables (5)
Table 1. Epidemiological characteristics.
Table 2. Clinical and echocardiographic characteristics.
Table 3. Microbiological characteristics.
Table 4. In hospital and 1-year outcomes. One patient with surgical removal presented upper gastrointestinal bleeding and multiple organ failure after the procedure.
Table 5. Univariate analysis of in hospital mortality.
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Abstract
Background and objectives

Due to the widespread indications for device implants and the population aging, right-sided infective endocarditis (RSIE) epidemiology has dramatically changed, being nowadays, cardiac device carriers the main affected group. The aim of this work is to describe the epidemiology, clinical profile and outcomes of RSIE in cardiac device carriers.

Patients and methods

We included definitive infective endocarditis episodes consecutively diagnosed in 3 tertiary centers from March 1995 to September 2014. A retrospective analysis of 85 variables, one-year follow up and univariate analysis of in-hospital mortality was conducted.

Results

Among 1182 episodes, 100 cardiac device carriers presented with RSIE (8.5%). Mean age±SD was 67±14 years. Staphylococcus spp. were the main causative microorganisms (coagulase-negative 44%, aureus 31%) and 37% were methicillin-resistant. Cardiac devices were removed in 95% of patients. In-hospital mortality was 8% and one-year mortality was 4%. Univariate analysis demonstrated that renal failure at admission (OR 6.2; 95% CI 1.3–30.3), septic shock (OR 8.9; 95% CI 1.7–47.9) and persistent infection during clinical course (OR 19.4; 95% CI 3–125.7) increase in-hospital mortality while device removal is a protective factor (OR 0.08; 95% CI 0.02–0.39).

Conclusions

RSIE have low in-hospital and one-year mortality. Coagulase-negative Staphylococci is responsible of almost half of the episodes and methicillin-resistant incidence is high. Device removal is mandatory since it decreases in-hospital mortality.

Keywords:
Infective endocarditis
Device infective endocarditis
Right-sided infective endocarditis
Resumen
Antecedentes y objetivos

Debido al aumento en las indicaciones de implante de dispositivos cardiacos y el envejecimiento de la población, la epidemiología de la endocarditis infecciosa derecha (EID) ha cambiado drásticamente, siendo hoy en día los portadores de dispositivos cardiacos el principal grupo afectado. El objetivo de este trabajo es describir la epidemiología, el perfil clínico y los resultados de la EID en portadores de dispositivos cardiacos.

Pacientes y métodos

Se incluyeron episodios de endocarditis infecciosa definitiva diagnosticados consecutivamente en 3 centros terciarios entre marzo de 1995 y septiembre de 2014. Se realizó un análisis retrospectivo de 85 variables, seguimiento de un año y análisis univariante de la mortalidad hospitalaria.

Resultados

Entre 1.182 episodios, 100 portadores de dispositivos cardiacos presentaron EID (8,5%). La edad media±DE fue de 67±14 años. Los estafilococos fueron los principales microorganismos responsables (coagulasa negativos 44%, aureus 31%), y de ellos, el 37% eran resistentes a meticilina. Los dispositivos cardiacos fueron retirados en el 95% de los pacientes. La mortalidad hospitalaria y al año fue del 8 y el 4%, respectivamente. El análisis univariante demostró que la insuficiencia renal al ingreso (OR 6,2; IC 95% 1,3-30,3), el shock séptico (OR 8,9; IC 95% 1,7-47,9) y la infección persistente durante la evolución (OR 19,4; IC 95% 3-125,7) aumentan la mortalidad hospitalaria, mientras que la retirada del dispositivo es un factor protector (OR 0,08; IC 95% 0,02-0,39).

Conclusiones

La EID sobre dispositivos cardiacos tiene una baja mortalidad intrahospitalaria y al año. Los estafilococos coagulasa negativos son responsables de casi la mitad de los episodios y la incidencia de resistencia a meticilina es elevada. La retirada de los dispositivos disminuye la mortalidad hospitalaria.

Palabras clave:
Endocarditis infecciosa
Endocarditis infecciosa sobre dispositivos
Endocarditis infecciosa derecha

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