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At least 127 records · Page 7Linked to original sources
PubMedDate not supplied

An on-line system for electrocardiogram interpretation using the Bonner program.

An on-line system for electrocardiogram (ECG) interpretation using the Bonner program has been developed. The system consists of a telephone network, a process computer, a host computer, a computer interface and an electrocardiograph equipped with transmitting options. The signal acquisition program offered by IBM was modified so as to be equipped with the following functions: The technician can distinguish whether the process computer is ready or not, even if he is working in an examination room which is distant from the computer room. The data received by the process computer is transferred to the host computer in real time. In cases where the host computer is unable to receive the data, the process computer restarts transmission quickly after the host computer recovers the function of receiving. The host computer interprets transferred data in real-time by the Bonner program. The interpretation report is printed in real time on a remote printer. As the result of these modifications, a series of data processing operations may be executed without intermediary operators. The printed interpretation report begins to appear about ten seconds after completion of transmission.

Electrocardiography↗
PubMedDate not supplied

Teleradiology at Gunma University Hospital.

Using NEC MediFile 1000 and the public telephone system, the Department of Radiology of Gunma University Hospital and Saitama Medical School deliver image diagnosis to fellow clinicians and affiliated hospitals. The system consists of digitizing, filing, processing, retrieving and archiving units for radiographs and documents. Images were digitized by CCD and filed in 2 Gbyte double sided optical disk, which can accommodate 500 sheets of 14 x 17 films on 1500 of the smallest size slats without data compression. Image resolution was evaluated by ROC curve using multiple pulmonary nodules. The time taken for image transfer over 24 km was tested with various film sizes, image varieties and data compression rates.

Computer Communication Networks↗
PubMed1976

ECG telephone transmission for monitoring pacemakers and cardiac arrhythmias.

A network of ECG telephone transmission has been established which uses simple and inexpensive equipment, and which is aimed particularly at arrhythmia monitoring. Hospitals in areas remote from major medical centers are able to transmit to the Toronto General Hospital for expert advice. 400 patients in their homes may transmit to any of these hospitals for monitoring of pacemaker function or intermittent cardiac arrhythmia. Any patients in the Toronto General Hospital not admitted for a cardiac problem may be monitored via telephone by the expert nurses in the coronary care unit if a cardiac arrhythmia should arise. Equipment for the system has been carefully designed to minimize cost and to make it simple to use, particularly for the old or infirm patients in their homes. Transmissions between hospitals meet American Heart Association specifications for ECG recording. Transmissions of arrhythmias from patients' homes are carried out with a reduced low-frequency response. Expert cardiologists find both transmissions acceptable for their particular purpose. Standards should be set for simple, economic transmission systems as well as for those meeting the most stringent criteria.

Amplifiers, Electronic↗
PubMed1992

Use of transtelephonic electrocardiographic monitoring in children with suspected arrhythmias.

Arrhythmias in children can produce various symptoms and their assessment often is difficult with usual methods. Transtelephonic electrocardiographic monitoring was used in 136 symptomatic patients (palpitations [112], syncope [six], chest pain [18]) for a mean duration of 86 +/- 65 days; mean age was 11.1 +/- 4.8 years and 62% were female. Of 398 recordings sent (mean 2.9 per patient) 32 revealed significant arrhythmias (8%). Of the 67 patients reporting symptoms during the recording period, only 24 had documented arrhythmias - 23 supraventricular tachycardia and one junctional tachycardia. The negative predictive value is 100%, compared with a low positive predictive value of 36%; sensitivity and specificity are, respectively, 100 and 62%. Of the 24 patients with documented arrhythmias, 54% were treated versus 13% of those with normal recordings (P < 0.01). At the end of the follow-up (mean duration 1.6 +/- 1.2 years), 63% of the patients with negative recordings had not complained of further symptoms versus 22% of those with documented arrhythmias (P = 0.001). Transtelephonic electrocardiographic monitoring is an important tool for documenting infrequent arrhythmias in children and even more for reassuring the patient and his or her family in the absence of significant arrhythmias.

Adolescent↗