Most hemodialysis patients are complicated by cardiovascular and cerebrovascular diseases, let's take a look at the majority of hemodialysis hypotension reasons, but mainly has the following number of points;
1. Volume deficiency
The majority of hypotension during hemodialysis with an excess of dehydration to the sharp decline in blood volume in a very short period of time excessive ultrafiltration, causing the volume and cardiac output decrease may be due to the appearance of those conditions: (a) the amount of the error estimate for ultrafiltration; (2) more water for dialysis patients and overstatement weight; (3) poor venous vascular access, so that venous hypertension caused increased pressure dialysis, ultrafiltration volume is too more, causing a lack of blood volume, but also more common in dialysis before a blood volume deficiency, such as eating less, low sodium diet, nausea, vomiting, blood pressure medication and vasodilator agents treatment.
2. Long-term use low sodium dialysate
Dialysate sodium concentration lower than the plasma, resulting in lower serum sodium, plasma osmolality landing, body fluids into the cell, to hypovolemia.
3. Weight gain between dialysis clearly
In the blood beyond the proper amount of timely landing weight before discount more than 5% of body weight, prone to low blood pressure, weight gain between dialysis therefore should be controlled below 4%.
4. Blood vessel function unstable dialysis patients
Atrial Britain, pericarditis, endotoxin, infection and bleeding easily lead to hypotension.
5. Autonomic function disorders
Hypotension caused by excessive ultrafiltration occurs mostly after 1 hour at the beginning of dialysis, ultrafiltration does not add a certain amount of liquid, the dialysis membrane and allergic toxin induced hypotension, then appeared earlier, these elements exist many kinds of , then the timing of hypotension increases.
