Company
Headquarters
Laborie
Canada
Cooper Surgical
United States
SRS Medical Systems
United States
Dantec
United Kingdom
Mediwatch
United Kingdom
Albyn Medical
United Kingdom, Spain
Medical Measurement Systems [MMS]
United States, Germany, Netherlands
Neomedix
Australia
Shippers
Germany
Andromeda
Germany
Menfis bioMedica
Italy
Mindray Medical International
China
Choosing the Right System
The International Continence Society (ICS) has published recommendations regarding the minimal equipment requirements and the minimal technical specifications for a UDS system. According to the ICS good UDS practice statement, a UDS system should include the following components [2]:
Three measurement channels: two for pressure (abdominal pressure [P abd], vesical pressure [P ves]) and one for flow
Display and secure storage of pressure measurements (P abd, P ves, detrusor pressure [P det]) and flow over time
Display of infused volume and voided volume either graphically or numerically
Clear labeling of all axes with no loss of data if tracings go off-scale
Ability to annotate display with events
According to the technical recommendations, the following specifications should be met [3]:
Minimum accuracy: ±1 cm H2O for pressure, ±5 % full scale for flow and volume
Detection range: 0–250 cm H2O for pressure, 0–50 mL/s for flow, 1,000 mL for volume
Frequency: ≥10 Hz per channel for pressure and flow; ≥20 kHz for electromyogram (EMG)
Scaling: 50 cm H2O per cm for pressure, 10 mL/s per cm for flow, 5 s/mm during filling, 2 s/mm during voiding
UDS equipment has advanced considerably since the last publication of the ICS technical recommendations in 1987. An updated ICS guideline on UDS equipment performance will be available in the near future.
A number of other factors should be considered when purchasing a UDS machine (see Table 3.2). Other important factors to consider include clinical needs, the physical space available for the UDS machine, and the available budget. Prior to selecting an appropriate UDS system, the clinician should answer a series of questions:
Table 3.2
UDS systems
Manufacturer | UDS system | Wireless | EMR compatible | Number of pressure channels | Description |
|---|---|---|---|---|---|
Laborie [4] | Aquarius TT™ | X | X | 8 | – Compatible with fluoroscopy – Available upgrade for anorectal manometry – High speed EMG sampling (5,000 Hz) |
Laborie [4] | Dorado KT | X | X | 8 | – Compatible with fluoroscopy – 50 Hz EMG |
Laborie [4] | Triton™ | X | 8 | – Available EMG upgrade to 3,000 Hz | |
Laborie [4] | Goby KT | X | 4 | – Step by step voice commands – Cart option offers in-office portability | |
Laborie [4] | Delphis/Delphis KT | X | 4 | – Cart option offers in-office portability | |
Laborie [4] | Delphis IP | X | 4 | – Attaches to an IV pole for easy portability | |
Laborie [4] | Goby mobile | X | X | 4 | – Designed for modular use – Allows patients to void in the bathroom – Step by step voice commands |
Cooper Surgical [5] | Lumax™ TS Pro Elite | X | 4 | – Available EMG upgrade – Attaches to IV pole for easy portability | |
Cooper Surgical [5] | Lumax™ TS Pro Advanced | X | 4 | – Available EMG upgrade – Attaches to IV pole for easy portability | |
Cooper Surgical [5] | Lumax™ TS Pro Basic | X | 4 | – Available EMG upgrade – Attaches to IV pole for easy portability |
Is there a role for UDS in my practice?
What type of clinical questions can UDS help me answer?
Do I need an electromyogram (EMG)?
Do I need the ability to integrate fluoroscopy with my UDS testing?
Is electronic medical record (EMR) integration necessary?Related posts:
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