Brief Answer:
Probably low fluid intake!

Detailed Answer:
Hi and thanks for contacting us.

I am so sorry to hear about your wife and her struggles with Alzheimers'. Unfortunately, the medical community hasn't gotten a complete cure for this condition just yet. J=However, there is ongoing research in this area.

I have reviewed her information fully. Her symptoms might have been explained by low fluids intake with consequent fall in blood pressure. I will suggest that you often follow up and make sure she drinks enough. Also, monitor her blood pressure closely and most especially during such spells and report the values to us. If she is on treatment for high blood pressure, share her medications as well with me for review and guidance.

I hope this helps. I wish you and your wife well. As always, am very available to address any concerns that you may have.

---