Syncope is a transient disturbance of consciousness caused by transient cerebral insufficiency, which can be recovered in seconds or tens of seconds. Due to the sudden onset of the patient, the family members or others are often helpless. After being sent to the hospital, the patient often recovers completely, and there is no abnormality in various examinations. The doctor has too little evidence for diagnosis, and often the cause of the disease cannot be found. First-hand information obtained by eyewitnesses is very helpful for diagnosis.
1. Seizure situations
For example, whether the onset of pale face, respiratory rhythm, pulse rate, whether irregular, whether the pupil changes, whether the eyeballs upside down, whether convulsions, falls, urinary incontinence and performance before and after the attack. Understand under what circumstances, whether there are incentives, whether there are mental factors, whether there is a relationship with defecation and cough, and the position at the beginning of the attack.
Hypoglycemia, hyperventilation, cancer, hypertension, and cardiogenic syncope were not related to position. Orthostatic hypotension syncope occurs in a short time after standing up from supine or squatting position. Sudden syncope occurs within a few seconds, which may be some serious arrhythmia, such as severe cardiac conduction block, cardiac arrest, tachycardia, etc. If it gradually occurs within a few minutes, cancer and hypoglycemic syncope should be considered.
2. Time and frequency of onset
Attack time more than a few minutes suggest hypoglycemia, cancer, excessive ventilation. Heart disease with arrhythmia should be considered when several episodes occur within a day.
3. Concomitant symptoms
Attack accompanied by pale, cold sweat, nausea and other manifestations, mainly in low blood sugar. With significant limb tic, most common in epilepsy, can also be seen in severe arrhythmia, such as paroxysmal ventricular fibrillation or cardiac arrest. If accompanied by irregular twitching or general spasm and loss of consciousness or EEG changes, common in cancer. Snoring with slow breathing is seen in cerebral syncope. Brain lesions should also be considered in those with neurological signs.
