Does Regular Surveillance Improve the Long-Term Survival of Arteriovenous Fistulas?

Table 2

Randomized controlled trials of arteriovenous fistula surveillance.

Name	Survey method	Preemptive angioplasty/surgical revison	Control group	Treatment group	Reduce thrombosis	Prolong survival
Polkinghorne et al.[15]	Qa (<550 mL/min) and Clinical criteria versus Clinical criteria alone	No	68	69	*	*
Sands et l. [16]	Qa (<800 mL/min), Static venous pressure and Doppler ultrasound versus Doppler ultrasound alone	No	40	63	Yes	*
Tessitore et al. [17]	Qa (<850 mL/min), Qb, Ru, and Rhd	Yes	30	32	Yes	*
Tessitore et al. [18]	Qa (<750 mL/min), Qb, and Ru	Yes	36	43	Yes	Yes

*Data/values not reported or unavailable.
Qa: vascular access flow, Qb: blood flow, Ru: urea-based access recirculation, and Rhd: ultrasound dilution recirculation.