DOC PREVIEW
UW-Madison BME 200 - Glaucoma Medicine Reminder

This preview shows page 1-2-3-24-25-26 out of 26 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 26 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

Glaucoma Medicine Reminder Department of Biomedical Engineering BME 200/300 Final Report October 24, 2006 Client: Leo Wang Advisor: John Webster Chris Webster – Team Leader Ksenija Bujanovic – Communications Jessica Hause – BSAC Mike Oldenburg – BWIGTable of Contents Abstract……………………………………………………………………...3 Background……………………………………………………………….....3 Specifications………………………………………………………………..5 Previous Work……………………………………………………………….7 Design Ideas LCD system…………………………...………………………………8 PDA System…………………………………………………………10 Modified Egg Timer…………………………………………………12 Design Matrix………………………………………………………………14 Final Design……………………………………………………………......15 Testing………………………………………………………………...........16 Cost Analysis……………………………………………………………….18 Future Work………………………………………………………………..18 Appendix A: Figures……………………………………………………….20 Appendix B: Tables………………………………………………………...22 Appendix C: References……………………………………………………24 Appendix D: PDS…………………………………………………………..25 2Abstract Glaucoma treatment involves taking various types of eye drops at different times during the day. This kind of disease management requires following strict regiment that numerous patients do not adhere to. In a study done by Stewart et al. it was found that 34% of patients admit to noncompliance. This study also revealed that 94% of physicians believe that noncompliance may lead to loss of vision (1). Furthermore, 38% of patients stated that memory is the reason for noncompliance. This is not surprising since the average age of onset of the disease is in patients who are in their late sixties. Since noncompliance is one of the most important causes of aggravating glaucoma, it is critical to find a way to successfully remind patients of when their next medication is to be taken (2). This would greatly improve their chances of stabilizing and retaining their sight. Our goal is to develop a portable electronic device which can indicate glaucoma patient when it is time to take their next dose of medication. An audio will be necessary because many of the patients are severely sight-impaired. The device needs to be programmable for up to six different medications that can be used in different dose regimens. A reset mechanism, types of reminder signals, durability/portability, power options, and power level indicators all must be taken into consideration. Background Glaucoma is the leading cause of blindness in the United States. Often called the “silent killer,” this disease shows few obvious symptoms until the patient’s vision is already compromised. Glaucoma comes in two different forms, open angle glaucoma and acute closure glaucoma. Loss of vision due to intraocular pressure build up in the eye is common in both. In open angle glaucoma, gradual build up of pressure in the eye causes 3damage to the optic nerve, and can result in blindness in a few years if left untreated. Peripheral vision is usually the first to deteriorate and patients often develop tunnel vision in the advanced stages of the disease. Acute closure glaucoma occurs suddenly due to a rapid rise in ocular pressure. This condition requires immediate medical attention or blindness can occur within a few hours. The main cause of increasing intraocular pressure in the eye can be traced back to the eye’s drainage system. In order to keep pressure constant in the eye, the body constantly regulates a fluid called aqueous humor. Its purpose is to flow in and out of the eye cavity, providing nourishment and keeping the eye free of debris (see Appendix A, Figure 1). In a healthy eye, the body produces aqueous humor at the same rate at which it is drained out of the eye cavity, keeping a constant pressure. In open angle glaucoma, the drainage channel remains open but aqueous humor drains too slowly, resulting in a build up of pressure in the eye. This type of glaucoma occurs in approximately 2% of adults over the age of 40 and approximately 8% of adults over 70. The goal of treatment is to reduce pressure in the eye and to control the flow of aqueous humor. This can be accomplished in many ways including surgery, laser treatment, systemic medications, but most often through eye drops. Because the treatment often consists of several medications per day and the patients are often elderly, noncompliance is a major issue for physicians. Also, in terms of our medication reminder device, it is important to realize that patients may have other medical conditions that limit movement or mental capacity. These additional problems must be taken into consideration. Glaucoma is a condition that affects millions of people in the United States, 4and although it cannot be cured, early detection and proper treatment can go a long way in retaining a patient’s vision. Specifications Most importantly, the device needs to remind patient which medication needs to be taken and when. The device must be programmable for up to six different medications in order to ensure that it will provide service to the patient with the most severe cases of glaucoma. In order to minimize confusion as to which medication is to be taken with each alarm, the device should have six different colored stickers that correspond to matching colored stickers on eye-drop bottles. Since these patients may be severely visually impaired, the stickers must be large and correspond with colors that are easy for the patient to distinguish. Also, the device must have an audio alert option along with a flashing light reminder to indicate that the medication should be taken. The alarm should last for about 1min. It should have no offensive sounds and be equipped with a volume control button. Volume control must not be changed easily, however, in order to prevent from accidental


View Full Document

UW-Madison BME 200 - Glaucoma Medicine Reminder

Documents in this Course
Load more
Download Glaucoma Medicine Reminder
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Glaucoma Medicine Reminder and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Glaucoma Medicine Reminder 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?