Association of intradialytic hypotension and convective volume in hemodiafiltration: results from a retrospective cohort study

Table 2 Characteristics of hemodiafiltration (HDF) treatments

Parameter	Group 1	Group 2	Group 3	Group 4	Group 5	Group 6	Anova	P<0.05	P>0.05
Effective Dialysis Time [min]	217 ± 14	205 ± 17	210 ± 18	214 ± 17	217 ± 17	219 ± 16	NS	None	1 vs. 2-6
Total Blood Volume [liters]*	88.6 ± 14.5	74.8 ± 15.8	82.5 ± 13.4	88.7 ± 12.6	92.2 ± 11.4	97.2 ± 10.5	<0.0001	1 vs.5,6.	1 vs.2-4
Extracorporeal Blood Flow [mL/min]	406 ± 63	361 ± 71	389 ± 62	412 ± 58	423 ± 55	442 ± 52	<0.0001	1 vs.5,6.	1 vs.2-4
Dialysate Flow [ml/min]	522 ± 41	613 ± 36	632 ± 37	643 ± 45	672 ± 47	703 ± 34	<0.0001	1 vs.2-6	None
Ultrafiltration [litters]	2.62 ± 0.85	3.05 ± 1.03	2.89 ± 1.12	2.97 ± 1.14	2.67 ± 1.09	2.41 ± 1.04	<0.0001	1 vs.2-4	1 vs.5,6
Conductivity [mS/cm³]	14.0 ± 0.2	14.0 ± 0.1	14.1 ± 0.1	14.1 ± 0.1	14.1 ± 0.1	14.1 ± 0.1	NS	None	1 vs.2-6
Dialysate temperature [Celsius]	35.74 ± 0.35	35.64 ± 0.37	35.64 ± 0.38	35.62 ± 0.35	35.64 ± 0.30	35.68 ± 0.32	NS	None	1 vs.2-6
Arterial Line Pressure [mmHg]	−201 ± 35	−205 ± 34	−211 ± 29	−218 ± 26	−217 ± 27	−215 ± 28	NS	None	1 vs.2-6
Venous Line Pressure [mmHg]	205 ± 53	176 ± 59	176 ± 46	180 ± 41	186 ± 40	198 ± 44	NS	None	1 vs.2-6
Dialysate sodium prescription [mEq/L]	138 ± 0.7	138 ± 0.8	138 ± 0.6	138 ± 0.6	138 ± 0.6	138 ± 0.4	NS	None	1 vs.2-6

* Total Blood Volume = Qb*Dialysis Time. Group 1: 0 to 7.53 liters, Group 2: 7.54 to 14.8 liters; Group 3: 14.9 to 16.96 liters; Group 4: 16.97 to 18.9 liters; Group 5: 19.1 to 21 liters, and Group 6: 21.1 to 30 liters. Not significant (NS).

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