FIRDA is rarely due to a subcortical dysfunction/lesion (e.g. lewy body dementia) or elevated intracranial pressure. A small amount of FIRDA, especially when it is restricted to drowsiness, can be a normal in elderly or children.

2019年6月1日 · Intermittent rhythmic delta activity (IRDA) is a characteristic electroencephalographic (EEG) pattern characterized by bursts of rhythmic and monomorphic slow waves [3]. IRDA is named according to the location of the main cortical area involved on EEG: frontal (FIRDA), temporal (TIRDA), and occipital (OIRDA).

Intermittent rhythmic delta activity (IRDA) is a type of brain wave abnormality found in electroencephalograms (EEG). [1] It can be classified based on the area of brain it originates from: It can also be.

2024年12月21日 · Intermittent rhythmic delta activity (IRDA) is a pattern observed in EEG recordings characterized by rhythmic delta waves (typically 1–4 Hz) occurring intermittently. Delta waves are the slowest brainwaves typically observed in the deepest stages of sleep but can also occur in pathological states.

1999年3月15日 · IRDA (intermittent rhythmic delta activity) is an abnormal generalized EEG pattern that is not specific to any single etiology and can occur with diffuse or focal cerebral disturbances. To determine whether different electrographic features of IRDA and associated EEG findings can differentiate under …

Introduction: Frontal intermittent rhythmic delta activity (FIRDA), a transient rhythmic slow wave pattern over the anterior EEG leads, has been reported in a wide variety of cerebral lesions and different metabolic disturbances. Few authors have analyzed the frequency and clinical significance of FIRDA in the critical care setting.

2011年2月1日 · Intermittent rhythmic delta activity is a typical EEG pattern originally described by Cobb in 1945 [1]. It may be classified into three distinct forms based on the main cortical region involved on the EEG: frontal (FIRDA), temporal (TIRDA), …

Results: We identified 69 EEGs with IRDA in 58 patients from a total of 18,625 EEG recordings. The most common IRDA type was frontal IRDA (FIRDA; 55%), followed by temporal IRDA (TIRDA; 28.9%). Unilateral (UL) distribution was present in 36.8% of FIRDAs and 95% of TIRDAs.

2015年8月21日 · Acute confusional migraine (ACM) shows typical electroencephalography (EEG) patterns of diffuse delta slowing and frontal intermittent rhythmic delta activity (FIRDA). The pathophysiology of ACM is still unclear but these patterns …

2019年6月1日 · Intermittent rhythmic delta activity (IRDA) is a characteristic electroencephalographic (EEG) pattern characterized by bursts of rhythmic and monomorphic slow waves [3]. IRDA is named according to the location of the main cortical area involved on EEG: frontal (FIRDA), temporal (TIRDA), and occipital (OIRDA).