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Rev. med. nucl. Alasbimn j ; 12(48)abr. 2010. tab, ilus
Article in Spanish | LILACS | ID: lil-553019

ABSTRACT

Introducción. El centellograma óseo con 99mTc-MDP es una técnica útil en el diagnóstico de osteomielitis, sin embargo, presenta especificidad limitada en presencia de patología ósea previa (osteomielitis complicada). La 99mTc-ciprofloxacina es uno de los radiofármacos más difundidos para la detección de infecciones óseas, aunque persisten controversias sobre su rendimiento diagnóstico. Objetivo. Determinar el valor clínico del protocolo combinado de centellograma con 99mTc-ciprofloxacina y 99mTc-MDP en el diagnóstico de osteomielitis complicada y prótesis articular infectada. Materiales y métodos 37 pacientes con sospecha clínica de osteomielitis complicada o prótesis infectada fueron estudiados mediante centellograma con 99mTc-ciprofloxacina y 99mTc-MDP. 26/37 pacientes presentaban fractura previa, 7 prótesis de rodilla y 4 prótesis de cadera. En todos ellos se realizó seguimiento clínico y bacteriológico. Resultados. El método presentó sensibilidad de 94 por ciento, especificidad de 79 por ciento, valor predictivo positivo de 81 por ciento y valor predictivo negativo de 94 por ciento, con una exactitud de 86 por ciento. Conclusiones. El protocolo combinado de 99mTc-ciprofloxacina y 99mTc-MDP presenta elevado rendimiento para el diagnóstico de osteomielitis complicada y prótesis articular infectada.


Introduction. Bone scintigraphy with 99mTc-MDP is a useful technique in the diagnosis of osteomyelitis, however, has limited specificity in the presence of previous bone pathology (complicated osteomyelitis). 99mTc-ciprofloxacin is one of the most widely used radiotracers for the detection of bone infection, although controversies persist on its diagnostic performance. Objective To determine the clinical value of 99mTc-ciprofloxacin/99mTc-MDP combined protocol in the diagnosis of complicated osteomyelitis and infected joint prosthesis. Materials and methods 37 patients with clinically suspected complicated osteomyelitis or infected prosthesis were studied with 99mTc-ciprofloxacin and 99mTc-MDP scintigraphy. 26/37 patients had previous fractures, 7 had knee replacements and 4 had hip replacements. All of the patients underwent clinical and bacteriological follow-up. Results. The method presented sensitivity of 94 percent, 79 percent specificity, 81 percent positive predictive value and 94 percent negative predictive value, with an accuracy of 86 percent. Conclusions. The combined protocol using 99mTc-ciprofloxacin/99mTc-MDP showed high diagnostic performance in complicated osteomyelitis and infected joint prosthesis.


Subject(s)
Humans , Male , Adolescent , Adult , Female , Middle Aged , Aged, 80 and over , Ciprofloxacin , Organotechnetium Compounds , Prosthesis-Related Infections , Osteomyelitis , Ciprofloxacin/analogs & derivatives , Bacterial Infections , Osteomyelitis/pathology , Joint Prosthesis/adverse effects , Radiopharmaceuticals , Sensitivity and Specificity , Predictive Value of Tests
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