### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, my Grnadmother is 84 yrs old and has been having kidney  haem dialysis for 8 weeks.  She was okay for a few weeks but has lately been very breathless while receiving it and has been unable to receive the full amounts due to this.  Could this be due to an underlying heart problem? She also smokes so it may be a sy ptom of emphysaemia?  I also noticed in a few articles about this type of dialysis that eating bananas is to be avoided and she should be on a low potassium diet, however the hospital have advised her to eat at least one banana a day because she is low in potassium? I dont understand this, please help

### output:

Thanks for your question on Chat Doctor. I can understand your concern. Breathlessness in patients with dialysis and active smoking can be due to fluid overload, pulmonary edema and COPD (chronic obstructive pulmonary disease). So better to get done chest x-ray and PFT (pulmonary function test). If chest x-ray is suggestive of pulmonary edema then she will need diuretics. If PFT is showing obstructive Airway defect then she will need inhaled bronchodilator and inhaled corticosteroids (ICS). In any case smoking cessation should be done first. About potassium level, if she is having low potassium level then banana should be given. Actually kidney patients are having high potassium level in the blood due to decreased urine output. But due to dialysis, some patients develop low potassium level. So in such patients, you should give banana to supplement potassium. Hope I have solved your query. I will be happy to help you further. Wishing good health to your grandmother. Thanks.