<s>[INST] my father is a hemodialysis patient. He has low blood pressure before during and after dialysis. He is very sluggish and has no energy. He was recently prescribed a med to take before dialysis to help raise his blood pressure, it raises it a little but it doesn't say up during dialysis. He is 79 and is on a 4 hour treatment. He was on peritoneal dialysis for 5 years before going on hemo for the last three.Any suggestions on questions to ask his doctor or areas to pursue? [/INST] Hello sir/madam,There are multiple reasons for low BP. Kidney doctor might know what he is doing, but for someone to be always having low BP, makes me worry. Possible his weight can be increased on dialysis and if your father is eating during dialysis. let him know that not to eat as it will lower his BP.Thanks Dr.Katta </s>