My best friend is an RN. She has explained some of the potential spinal anesthesia complications to me before I went in to have my baby. She told me there is a risk of heart failure, with a lot of cases happening to younger patients who were not particularly at risk.
Spinal anesthesia usually causes your blood pressure to drop. That can cause less blood to reach your brain and lead to lowered respiratory function. Basically you don’t get enough oxygen in your blood and can stop breathing all together. It is standard to monitor a patient’s oxygen level and use an oxygen mask or nasal cannula.
My friend also explained that a very small number of patients have neurological problems after using spinal anesthesia. These can include loss of movement, loss of feeling, and incontinence.
I made sure to discuss all my concerns with my doctor. You always want to find the best course of action. Usually, the benefits outweigh the risks when you find the right treatment.