Table 1

Aspiration flow of water through various access catheters depending on whether the microcatheter was kept in the access catheter (regular technique) or not (BWT technique)

Access catheter	Microcatheter	Stent-retriever	Flow with BWT (mL/s)	Flow with regular technique (mL/s)	Relative flow (%)	p Value
Cook Flexor 8 F	Rebar 18	Trevo proVue 4×20	6.62	6.33	95.58	<0.001*
Cook Flexor 8 F	Rebar 27	Trevo proVue 4×20	6.62	6.29	95.05	<0.001*
FlowGate 8 F	Rebar 18	Trevo proVue 4×20	5.89	4.00	83.76	<0.001*
FlowGate 8 F	Rebar 27	Trevo proVue 4×20	5.06	3.83	80.20	<0.001*
Guider Softip 8 F	Rebar 18	Trevo proVue 4×20	4.80	4.17	86.86	<0.001*
Guider Softip 6 F	Rebar 18	Trevo proVue 4×20	3.00	1.67	55.71	<0.001*
Envoy 7 F	Rebar 18	Trevo proVue 4×20	4.30	3.41	79.19	<0.001*
Envoy 6 F	Rebar 18	Trevo proVue 4×20	3.58	2.44	68.2	<0.001*
Navien 5 F	Rebar 18	Trevo proVue 4×20	2.07	0.73	35.05	<0.001*
Sofia 5 F	Rebar 18	Trevo proVue 4×20	1.82	0.49	26.84	<0.001*

Water with a temperature of 20°C was aspirated with a constant negative pressure of 25.5 in Hg. Values for blood are approximately 3–4 times lower due to its higher viscosity.
Relative flow: flow with microcatheter (regular technique)/flow with pusher-wire (BWT, bare wire thrombectomy technique).
*significant values.