Prayers sent for your wife (and you).
POTS is short for Postural orthostatic tachycardia syndrome. The most typical symptom is a rise in heartbeat when changing from a sitting position to standing. The basis for treatment will likely be determined from the cause(s). In some cases, the treatment is simply to have the patient drink more water....some cases involve a B12 deficiency.....some require medication to relieve the tachycardia itself.....