Is it a concern that my mother had a sudden 1-minute episode of unconsciousness with varying blood pressure?

Hello,

Welcome to icliniq.com.

I can understand your concern. According to your statement, your mother has a history of dizziness, sweating, and fainting for a minute. The clinical features from which your mother was suffering may result from various underlying health conditions like low blood sugar levels or hypoglycemia, low blood pressure or hypotension, dehydration, heat exhaustion, transient ischemic attack or TIA, strenuous workload, cardiac problems, obesity medications, etc. Treatment depends on the causes. Some investigations like CBC (complete blood count), serum electrolytes, electrocardiography (ECG), and magnetic resonance imaging (MRI) of the brain may help to detect the exact causes of your mother's sufferings and then treat them accordingly.

As your mother had a history of strenuous workload, intake of insufficient foods and fluids, low blood sugar, and low blood pressure, she may be with electrolytes imbalance. So, I do not think that she needs to undergo further investigations for her single episode. However, if such type of episode or incident occurs again, she should undergo further investigations for proper diagnosis and treatment.