Hipotensión postural con desencadenantes no neurogénicos en la vejez
Introduction. Orthostatic hypotension (OH) symptoms are the most frequent reason for patients to undergo an autonomicexamination.Theincidenceofthesesymptomsisgreaterintwogroups:youngpeoplewithneurallymediatedsyncope,and adults older than 60 years, all who have normal results in the EKG and EEG test. The baroreflex afferences induce a continuous blood pressure adjustment through the heart rate variation. There are functional changes with aging which reduce thisbaroreflexsensitivityandthereforetheaccommodationtothehaemodynamicrequirementsisfrequentlyimpaired.Anumber of no neurogenic triggers can be implicated in the development of OH symptoms such as electrolytic disorders, arrhythmia with lowstrokevolumeanddrugssideeffects.Materialandmethods.Tostudytheinfluenceofthesefactorsintheelderlysufferingfrom OH, we reviewed patients older than 60 years sent to our laboratory during the last three years. In 40 out of 207 cases we found the existence of some of the above mentioned factors as possible trigger of the symptoms, since no autonomic abnormality was present. After arrhythmia correction, in two cases, and the pharmacologic agent suppression, in four more patients, symptoms disappeared and no OH was found in a second tilting test. OH is a frequent problem in the elderly and requires a careful review of the numerous causes that could contribute to develop the symptoms. Conclusions. To take the proper therapeutic decision, a long term monitoring seems to be necessary for the main parameters: blood pressure and EKG
Conclusiones La HO es un problema frecuente en la vejez y requiere una revisión cuidadosa de los factores que pueden precipitar la clínica. Se evidencia la necesidad de una monitorización prolongada y simultánea de la señal ECG y las cifras de tensión arterial previa a la instauración de tratamiento