Seizure frequency and bioelectric brain activity in epileptic patients in stable and unstable atmospheric pressure and temperature in different seasons of the year – a preliminary report

Motta, Ewa; Gołba, Anna; Bal, Anetta; Kazibutowska, Z; Strzała-Orzeł, Michalina

doi:10.1016/s0028-3843(14)60123-7

Cited by 29 publications

(21 citation statements)

References 10 publications

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“…In spite of some patients report of the weather, or weather changes, as one of their possible seizure triggers [1,7], the evidence supporting a significant influence of specific meteorological parameters in seizure frequency is scarce and inconsistent [8][9][10][11][12][13][14][15][16]. Thus, it is still unclear what the influence of weather is on the general risk of seizures.…”

Section: Introductionmentioning

confidence: 99%

Influence of weather on seizure frequency — Clinical experience in the emergency room of a tertiary hospital

Brás

Barros

Vaz

et al. 2018

Epilepsy & Behavior

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Introduction: Some patients with epilepsy identify weather as a typical seizure trigger. However, it is yet to be confirmed. Thus, we aimed to evaluate possible relationships between daily meteorological conditions and the daily incidence of seizures. Methods: This was a retrospective single center study that included adult patients who were admitted to the emergency room of a tertiary hospital in Lisbon, with a seizure, between January and December 2015. The influence of temperature, atmospheric pressure, relative humidity, wind, precipitation, sunlight duration, and the seasons on seizure frequency was evaluated. Results: Three hundred seven seizure episodes were included (from 286 patients) in a total of 365 days, 117 (38.1%) first unprovoked seizures and 190 (61.9%) with previous seizure episodes. There were 82 days with higher incidence of seizures (≥2) and 171 days without seizures. We found a statistical significant relation between lower ambient temperatures, higher atmospheric pressure, and higher maximum humidity with days with two or more seizures. We also found a statistically significant higher incidence of seizures in the winter days (p-value: 0.001) and in days with lower daylight duration (10.8 vs. 12.7 h; p-value: 0.0001). With the exception of humidity, these findings remained true when analyzing the subgroup of patients with previous seizures, but there was no significant difference in the subgroup of first unprovoked seizures. Conclusions: Our results support the possible influence of the weather on seizure frequency in the overall admissions of the emergency department of a tertiary hospital. In particular, these findings suggest that winter conditions, such as, lower ambient temperatures, higher atmospheric pressure, higher humidity, and reduced sunlight exposure, may have impact in the occurrence of higher incidence of seizures in patients with epilepsy.

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Section: Introductionmentioning

confidence: 99%

Influence of weather on seizure frequency — Clinical experience in the emergency room of a tertiary hospital

Brás

Barros

Vaz

et al. 2018

Epilepsy & Behavior

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“…The increase in frequency of seizures in unstable weather conditions did not correspond in all patients with increase of changes in EEG. However, such results suggest an impact of these conditions on subclinical seizures (11).…”

Section: Discussionmentioning

confidence: 85%

The effect of atmospheric pressure on frequency and patient's subjective perception of epileptic seizure severity

Kovačević¹,

Vidović²,

Avdić³

et al. 2018

Acta Med Sal

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Objective: The aim of this study was to determine the atmospheric pressure effect on the frequency of certain types of epileptic seizures as well as on patient's subjective perception of the seizure "severity". Subjects and methods:The study was conducted prospectively, from April, 4th 2012. and it lasted for one year. Included were patients with epilepsy, without cognitive impairment or with mild cognitive impairment (a score of mini mental status MMS> 23), who regularly take antiepileptics. Daily personal epileptic seizure calendar of all subjects was monitored for twelve months, and atmospheric pressure value was monitored using biometeorological calendar. The calendar recorded the date, the time of seizure, with the assessment of the seizure "severity" (from 1 to 5), and based on autoanamnestic and heteroanamnestic data. Results:Of 150 subjects included in the study, 74 (49.3%) were male, while 76 (50.7%) were female. There was no statistically significant difference in age between male and female subjects, with a probability of p = 0.082 (t = -1.751). There were 58 patients with generalized tonic-clonic seizures, (total 58), 56 patients with simple focal seizures, and 36 with complex focal seizures. The seizure frequency in both male and female subjects did not depend on the atmospheric pressure value. However, the seizure frequency is statistically more frequent in days of changing in atmospheric pressure (either decrease or increase) in both men and women. Pearson correlation revealed only statistically significant (p <0.031) negative correlation of the seizure severity with the difference (change) in atmospheric pressure in male subjects, and where the correlation was extremely weak with the coefficient of correlation of r = -0,201. Association of seizure type with atmospheric pressure and its changes did not reach statistical significance. Conclusion:These results certainly require further monitoring of associated biometerological parameters and their effects on seizure onset.

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“…Estudios previos mostraban un mayor número de crisis en otoño [10] y en el cuarto trimestre [7]. Nuestro estudio muestra una media de crisis mayor en otoño en el mismo sentido, y una menor media en invierno, pero ambas sin significación estadística.…”

Section: Discussionunclassified

“…Estudios recientes [5][6][7][8][9] también han relacionado las crisis epilépticas con algunas fases del ciclo lunar. Otros estudios [10] ponen de manifiesto que se presentan de forma irregular, según la estación del año que se trate.…”

Section: Introductionunclassified

Influencia en la epilepsia de factores meteorológicos y cronológicos

Altimiras-Roset

Brunet-Gómez²,

Aragonés³

et al. 2014

RevNeurol

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Introducción. Los profesionales que atienden urgencias médicas observan picos de incidencia de crisis epilépticas. Algunos pacientes epilépticos atribuyen sus crisis a cambios climáticos y estacionales. Objetivo. Analizar la relación de variables meteorológicas, de calendario y circadianas con la aparición de crisis epilépticas. Pacientes y métodos. Estudio retrospectivo en un centro residencial de personas con discapacidad intelectual. Resultados. Los 16 residentes estudiados presentan 855 crisis epilépticas, entre ellas 159 en picos o cúmulos, a lo largo del período 2009-2012. El predominio de crisis encontrado en otoño y durante el cuarto trimestre del año no es significativo (p > 0,05). No hay relación estadísticamente significativa entre la presencia de crisis epilépticas con las fases lunares y los días de la semana. La mayoría de crisis epilépticas (87,2%) se presenta en horario diurno (p < 0,001). El 36,3% aparece entre las 8:00 y las 10:59 h. No hay correlación estadística entre el número de crisis epilépticas respecto a la presión atmosférica, la precipitación, el grado de humedad y la temperatura media (p > 0,05). Conclusiones. Se constata la aparición de picos o cúmulos de crisis epilépticas. La presencia de estas presenta un marcado componente circadiano. La influencia en la epilepsia de los factores meteorológicos estudiados, fases lunares y estaciones del año no es significativa.

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Seizure frequency and bioelectric brain activity in epileptic patients in stable and unstable atmospheric pressure and temperature in different seasons of the year – a preliminary report

Cited by 29 publications

References 10 publications

Influence of weather on seizure frequency — Clinical experience in the emergency room of a tertiary hospital

Influence of weather on seizure frequency — Clinical experience in the emergency room of a tertiary hospital

The effect of atmospheric pressure on frequency and patient's subjective perception of epileptic seizure severity

Influencia en la epilepsia de factores meteorológicos y cronológicos

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