**Abstract**

Haemodialysis was first done successfully in humans, in 1945, and since then a lot of technological advancements have been made, there are still common acute complications that are encountered by physicians during their routine practice. The common complications include intradialytic hypotension, hypertension, arrhythmias, muscle cramps, sudden cardiac death, headache, etc., occurring in about 10–70% of patients undergoing haemodialysis. The mechanism of these complications is multifactorial and treatment of these complications is important to prevent mortality of the patients. Prevention is important including multiple disciplinary approaches. Here we discuss some of the common complications that occur in routine haemodialysis sessions.

**Keywords:** haemodialysis, blood flow rate, ultrafiltration, dialysate, heparin
