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Table 3 Correlations between oxygen desaturation and seizure semiology, lateralization, and ictal onset zone

From: Frequency of peri-ictal apnea and cardiac arrhythmias in epileptic seizures

  Oxygen desaturation Chi-square
Mild Moderate
N % N % χ2 P value
Type of seizure semiology
FOIA motor onset with automatism 12 48.00 4 50.00 41.825 <0.001*
FOIA nonmotor onset 4 16.00 1 12.50
FOIA motor onset hyperkinetic or FOA motor onset tonic or clonic 2 8.00 2 25.00
FBTCS 6 24.00 1 12.50
Absence 0 0.00 0 0.00
GTCs 0 0.00 0 0.00
Non convulsive seizure 1 4.00 0 0.00
Ictal onset zone
Frontal 6 24.00 0 0.00 62.296 <0.001*
Temporal 17 68.00 8 100.00
Parietal 2 8.00 0 0.00
Generalized 0 0.00 0 0.00
Seizure lateralization
Left 14 56.00 3 37.50 28.007 <0.001*
Right 11 44.00 5 62.50
Generalized 0 0.00 0 0.00
  1. FBTCS focal onset to bilateral tonic-clonic seizures, FOA focal onset aware, FOIA focal onset with impaired awareness, GTCs generalized onset tonic-clonic seizures, χ2 chi-square value
  2. *Statistically significant