ICS Teaching Module Urodynamic Artefacts 1 Common artefacts

ICS Teaching Module: Urodynamic Artefacts 1 Common artefacts in water-filled systems A Gammie, C D’Ancona, H-C Kuo & P Rosier. International Continence Society Teaching Module 1

International Continence Society (ICS) Guest Speaker: DISCLOSURES • Andromeda, Digitimer, Laborie, Mediwatch • Project sponsorship • T-Doc LLC • Trial sponsorship • Astellas, Ono Pharma, Vysera, Flexicare • Consultancy • E 2 L Ltd • Royalties from www. Urodynamics. Trainer. com Teaching Module 2

Common artefacts in water-filled systems Artefact: ‘Something …that is not naturally present but occurs as a result of …the procedure’ (Oxford) • • • Movement / tube knock Patient position change Expelled vesical catheter Expelled rectal catheter Flushed catheter Line open to syringe Empty bladder (poor response) Empty rectal catheter Poor cough response Teaching Module 3

Movement / tube knock (water) Transmission checked pves knocked Teaching Module pabd knocked 4

Movement / tube knock (water) pves knocked Teaching Module 5

Patient position change (water filled) A B Teaching Module C 6

Patient position change (water filled) Patient stands up, transducers not adjusted Teaching Module 7

Patient position change (water filled) Patient stands up Teaching Module Transducer height adjusted 8

Expelled vesical catheter expelled Teaching Module 9

Expelled vesical catheter voided, giving flow rate spike Teaching Module 10

Expelled vesical catheter voided Teaching Module 11

Expelled rectal catheter voided Teaching Module 12

Expelled rectal catheter voided Teaching Module 13

Flushed (water) catheter flushed with water Teaching Module 14

Line open to syringe (water) transducer open to syringe, damping signal tap closed to syringe, artefact removed Teaching Module 15

Empty bladder (poor response) No response when bladder is empty, restored after 50 ml infused Teaching Module 16

Empty rectal catheter (water) rectal catheter loses water and transmission Teaching Module 17

Poor cough response A Teaching Module B 18

Poor cough response Teaching Module 19

Poor response to live signal Teaching Module 20