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Boletín Médico del Hospital Infantil de México

2007, Number 3

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Bol Med Hosp Infant Mex 2007; 64 (3)

Usefulness and cost of electroencephalogram: experience of one thousand cases in a specialty hospital in Mexico city

Suástegui-Román RA, Garza-Morales S, Espinosa-Montero R, Pérez-Ramírez M, Aveleyra-Ojeda E

Language: Spanish
References: 28
Page: 171-181
PDF size: 245.79 Kb.


ABSTRACT

Introduction. Electroencephalogram (EEG) is a non-invasive, cheap and available study particularly useful in epilepsies; for other neurological studies its usefulness is limited, and it results costly and bothersome for patients. Objective: To describe clinical and electroencephalographic characteristics of 1 000 pediatric patients; to identify EEG sensitivity and specificity in epileptic patients from this population sample, and to calculate the cost of each EEG.
Materials and methods. Clinical and epidemiological characteristics of 1 000 patients were analyzed; EEG specificity and sensitivity as well as approximate cost were calculated.
Results. Forty-nine percent of cases presented a normal EEG whose cost was $484 281.17 Mexican pesos. Psychiatry Department reported 79% normal EEG. In epileptic patients, sensitivity was 47% and specificity 83%; positive and negative predictive values were 40 and 86% respectively.
Conclusions. EEG is a very useful study in epileptic patients but not in other neurological diseases. Cost per EEG was $988.33 Mexican pesos.


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