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.
Some seizures may be the result of a medical problem. Low blood sugar, infection, a head injury, accidental poisoning, or drug overdose can cause a seizure. A seizure may also be due to a brain tumor or other health problem affecting the brain. In addition, anything that results in a sudden lack of oxygen to the brain can cause a seizure. In some cases, the cause of the seizure is never discovered. When seizures recur, it may indicate the chronic condition known as epilepsy.