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La monitorización ambulatoria del pH ha formado parte de las exploraciones habituales en las enfermedades relacionadas con la secreción ácida del estómago desde hace décadas. Con la enfermedad por reflujo como eje principal, sus indicaciones no solo se limitan al diagnóstico del reflujo gastroesofágico y la valoración de la eficacia de los tratamientos, médicos o quirúrgicos, sino que se extiende a todas las enfermedades relacionadas con el ácido incluyendo la gastritis atrófica. Aunque la pHmetría forma parte de las técnicas habituales en gastroenterología, sus criterios de análisis se han ido modificando y en cierta medida siguen siendo tema de debate. En este libro, los autores, basándose en su amplia experiencia clínica y docente, sintetizan y ponen al día los aspectos más relevantes de la pHmetría en la práctica clínica. Su intención es servir de guía y consulta para realizar/interpretar estudios de calidad, y que el especialista que solicita un estudio obtenga el máximo rendimiento de la prueba. El libro, a través de múltiples imágenes, resume con claridad los aspectos básicos de la metodología e interpretación de estudios basales o con tratamiento, el reconocimiento de artefactos, y sus características en diferentes situaciones clínicas. Los capítulos referidos a las variantes de la pHmetría esofágica y gástrica, junto a la utilización de pHmetría con impedanciometría o Bilitec, explican claramente su utilidad y rendimiento en procesos relacionados con patología ORL, pulmonar o quirúrgica. Un libro imprescindible en la biblioteca del gastroenterólogo o cirujano digestivo.