Adults aged 40 years or older presenting to the emergency department (ED) with presyncope (near-fainting) or syncope (fainting) had similar rates of 30-day serious cardiac outcomes (5.2% vs 4.7%), ...
When your brain doesn’t get enough oxygen, you may experience lightheadedness and weakness, as if you’re going to faint. If you don’t, that’s a presyncope. If you do faint, that’s called syncope.
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