|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
... Modern pacemakers use a sensing device to determine when electrical impulses are to be sent to the heart to help it pump effectively. ...
Another use of pacemakers is for a disease called hypertrophic obstructive cardiomyopathy. ... Pacemakers alter the pattern of the hearts muscle to improve this problem. ... asp
Pacemakers
URL:http://americanheart. ... htm
• Identify the types of materials used to make pacemakers and the properties that make these suitable for implanting in the body
Biomaterials are those materials that enable function of a biomedical device in intimate contact with living tissue. ... /bae465/_1995_projects/scho/
• Identify data sources, gather, process and analyse information to outline the historical development of pacemakers and use available evidence to identify the types of technological advances that have made their development possible
Timeline
Date Development
1800’s -Found that electrical impulses caused the heart to beat
1930 -1932, Dr Albert Hyman resuscitated several patients with voltage impulses. ...
Early 1950’s -First practical pacemaker, small AC leads implanted into the heart
Mid 1950’s
Late 1950’s -1957, battery powered wearable pacemaker
-1958, reported case of implanted pacemaker powered by nickel cadmium battery
Early 1960’s -Pacemaker totally implanted into the body
Mid 1960’s -Transvenous leads
-Implants now done without opening the chest cavity
-Demand pacemakers
Early 1970’s -Further development of leads
Mid 1970’s -1975, introduction of lithium iodine battery
-Titanium casing developed
-Programmable pacemakers
Late 1970’s -Dual chamber pacing
Early 1980’s -Steroid-eluting lead
Mid 1980’s -Rate responsive pacing
Late 1980’s
Early 1990’s -½ original size
Mid 1990’s -Pacemakers becoming like microcomputers
Late 1990’s -Pacemakers now collect information for doctor consultations
Early pacemakers delivered an electric shock to the patient in an emergency situation, such as a heart attack. ... The first pacemakers were not implanted in the body and patients had restricted mobility due to needing to be close to a power socket.
Approximate Word count = 1558
Approximate Pages = 6.2
(250 words per page double spaced)
|
|
|
|
|
|