36 CFR Part 1195 Proposed Accessibility Standards for Medical Diagnostic Equipment NPRM - Preamble

Adjustable Height Range Considered

The technical criteria allow the height of transfer surfaces to be either fixed or adjustable within the 17 inches minimum and 19 inches maximum range. Based on the information discussed below, the Access Board is considering requiring in the final standards that the height of transfer surfaces be adjustable from 17 inches minimum to 25 inches maximum during patient transfer. Patient support surfaces can be adjusted outside this range when not needed for patient transfer such as when performing diagnostic procedures.

Many types of diagnostic equipment used by patients in a supine, prone, or side-lying position, and diagnostic equipment used by patients in a seated position currently provide adjustable height patient support surfaces. ANSI/AAMI HE75 recommends that the height of patient support surfaces “should be easy to adjust (ideally, powered) to suit the needs of health care professionals and patients.” ANSI/AAMI HE75 further recommends that the height of patient support surfaces “should be adjustable to a position high enough to accommodate tall health care providers and the range of medical procedures that could occur . . . [and] to a position low enough [19 inches maximum] to allow for the comfort of providers who choose to work in a seated position, to enable patients to keep their feet on the floor while seated, and to accommodate patients who need to transfer laterally between the platform and a chair or wheelchair alongside.” See ANSI/AAMI HE 75, section 16.4.4.

Transfer surfaces that are adjustable to the same heights as the seat heights of mobility devices reduce the effort needed to transfer since patients do not have to lift their body weight to make up the difference between the two surfaces, in one direction or the other. The Wheeled Mobility Anthropometry Project shows the occupied seat heights for people who use mobility devices vary considerably. See Analysis of Seat Heights for Wheeled Mobility Devices at: http://udeworld.com/analysis-of-seat-height-for-wheeled mobility-devices. The seat heights ranged from 16.3 inches to 23.9 inches for manual wheelchair users; 16.2 inches to 28.9 inches for power wheelchair users; and 18.8 inches to 25.3 inches for scooter users. Seat heights for males were typically higher than for females. Thirty (30) percent of male manual wheelchair users and 6 percent of male power wheelchair users had seat heights equal to or less than 19 inches. All the male manual wheelchair users and 92 percent of the male power wheelchair users had seat heights equal to or less than 25 inches. Thus, transfer surfaces that are adjustable from 17 inches minimum to 25 inches maximum during patient transfer accommodate significantly more patients who use mobility devices.

Ideally, transfer surfaces should be adjustable to any height within the 17 inches minimum and 25 inches maximum range. However, intermediate heights may need to be established within the range because of different methods for providing adjustability (e.g., power, mechanical) or other equipment limitations. The distance between the intermediate heights should be small.

Question 14. Comments are requested on the following questions regarding the adjustable height range (17 inches minimum to 25 inches maximum during patient transfer) that the Access Board is considering requiring in the final standards for transfer surfaces on diagnostic equipment used by patients in a supine, prone, or side-lying position, and diagnostic equipment used by patients in a seated position:

1. What types of equipment currently provide patient support surfaces that are height adjustable? If there are several models of the same type of equipment, does at least one model provide patient support surfaces that are height adjustable? What is the range of adjustable heights? If the range of adjustable heights does not include 17 inches to 25 inches, what would be the incremental costs to achieve this range?

2. What types of equipment do not currently provide patient support surfaces that are height adjustable? What would be the incremental costs for the design or redesign and manufacture of the equipment to provide patient support surfaces that are height adjustable within the above range?

3. Are there types of equipment that cannot provide patient support surfaces that are height adjustable within the above range because of the structural or operational characteristics of the equipment? Comments should discuss alternative methods for making the equipment accessible to patients with disabilities.

4. Should intermediate heights be established within the above range? What intermediate heights within the above range would be appropriate to facilitate independent transfer by patients who use mobility devices and aids?