Historical Examples. 1  From the word tranche it might be supposed that it was a relic of the Great War. 2  The 'chose vue,' the 'tranche de la vie'âthis was the thing to aim at. 3  The first tranche is available to any country, which demonstrates efforts to overcome its BOP problems. After the Rain Sam Vaknin A country can draw no more than 25% of its quota in the first tranche of a loan that it receives from the IMF.
Often, no underlying cause can be found for absence seizures. Many children appear to have a genetic predisposition to them. Rapid breathing (hyperventilation) can trigger an absence seizure. In general, seizures are caused by abnormal electrical impulses from nerve cells (neurons) in the brain. The brain's nerve cells normally send electrical and chemical signals across the synapses that connect them.
Generally speaking, typical absence seizures have no discernible cause. Atypical seizures are similar to typical seizures, except they tend to begin more slowly, last longer (up to a few minutes), and can include slumping or falling down. The person may also feel confused for a short time after regaining consciousness. While the cause of atypical seizures may be unidentifiable, they are sometimes traced to abnormalities in the brain that were present at birth (congenital) or from trauma or injury, or from complications from liver or kidney disease.