Hi Ann, welcome to Connect. I'm tagging @danielnavarrete365 and @pammiegapeach who have talked about about vasovagal syncope on Connect quite some time ago. They may be able to share personal experiences with you.

In the meantime, here is some further reading from Mayo Clinic
- Vasovagal syncope http://mayocl.in/1WrBzH8

The section on causes states: "Vasovagal syncope occurs when the part of your nervous system that regulates heart rate and blood pressure malfunctions in response to a trigger, such as the sight of blood. Your heart rate slows, and the blood vessels in your legs widen (dilate.) This allows blood to pool in your legs, which lowers your blood pressure. Combined, the drop in blood pressure and slowed heart rate quickly reduce blood flow to your brain, and you faint."

Standing for long periods can be trigger. Does your husband have to stand a lot for his work?