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At least 721 records · Page 40Linked to original sources
PubMed1978

[Fully automatic computer-analysis of electrocardiograms in clinical routine (author's transl)].

A fully automated Ecg recording and interpretation system (Hewlett Packard HP 5) consisting of a central computer and two peripheral units was evaluated during a four-month period. Ecgs were transmitted via public telephone lines, as was the report from central station to peripheral recording and print-out unit. Within a few seconds after recording and print-out unit. Within a few seconds after recording and transmission a preliminary report is available in printed format. The transmitted Ecgs are stored at the central computer and are being retrieved and evaluated manually there. Three cardiologists read the tracings and furnished final reports. 468 Ecgs were thus compared in our test time of 10 days for statistical evaluation with the following results: 1. 73.1% of all statements were read correctly by the computer. 2. There is a large range of diagnostic accuracy between 0% and 100%. 3. The evaluation of Ecg changed by cardiologists reflects the individual experience of the controllers regarding the Ecg statements as well as computer-dependent possibilities like modification etc. of Ecg. 4. As an example the diagnosis "myocardial infarction" is compared with other Ecg computer programs by means of a quality index calculated from sensitivity and specificity: HP 5 with 158.5 points reaches a similar level as the Pipberger program with 162.6 and the Bonner with 159.5 points. 5. Referring to false negative results this program is acceptable in all diagnostic groups with ca. 8%, except conduction defects with 17.7%. 6. Referring to false positive results the diagnostic groups myocardial infarction/ischemia and conduction defects are not satisfactory with 36.5% and 23.4%. 7. In all the tested system seems to be very useful in routine Ecg interpretation of bigger hospitals.

Cardiology↗
PubMed1987

Unusual prognostic significance of exercise-induced ST elevation in coronary patients.

Follow-up surveillance of 1136 coronary patients (918 men and 218 women) observed in Seattle community practice reveals a higher incidence of subsequent myocardial infarction, cardiac arrest or cardiac death in over 4% who manifested ST elevation during maximal exercise testing and recovery. Quantitative measurements of 100-beat signal-averaged ECG responses transmitted by dataphone from 15 testing sites provide objective classification into ST depression (less than O mV) and ST elevation (greater than O mV) during exercise and five minutes of recovery. Whereas the annual incidence of CHD events in 18.3% of men with ST depression only during exercise is 2.0%/year, it is 4.1%/year in 71.6% of men with ST depression persisting into recovery and 8.2%/year with ST elevation during exercise and recovery (P less than 0.05). Even higher event rates occur with exercise of short duration and in a subgroup who had invasive studies which demonstrated at least two vessels with 70% or more stenosis and ejection fractions under 50%.

Coronary Disease↗
PubMedDate not supplied

Data transmission through the telephone network: protocols, pitfalls, and some examples.

Invariably, the situation arises where it is desirable to transfer data from one computer to another, especially from small laboratory systems, word processors, or home computers to large mainframe computers. In many of these cases, there are no common storage media; home computers do not have 9-track tape drives and large mainframes do not have 5 1/4 in. floppy disk drives. Transmission of data through the telephone network is a viable method for data transfer, which is paradoxically both easier than many believe and more difficult than some may claim. One of the keys to successful data transmission is an understanding of telecommunications protocols, i.e., the rules governing intersystem communication through the telephone network. Some of the most common protocols allow exchanging ASCII-coded data at either 300 or 1200 baud. A variety of computer systems can be used, including IBM and DEC mainframes, a Wang word processor, an IBM PC-compatible microcomputer, and the Atari 800 microcomputer. A specific example is the use of the Atari 800 as an APL terminal, complete with the custom character set, standard ASCII text, and data transfer.

Computer Systems↗
PubMed1985

Diabetes home monitoring by telephone data entry.

The use of microcomputers to help physicians manage diabetic patients who perform home glucose monitoring is presented. Patients enter blood glucose information directly into an office database from their homes, using the push-button telephone with voice synthesizer prompts. The computer-enhanced organization of this information as well as future possibilities is discussed.

Blood Glucose↗
PubMed1973

Medline.

Explore the source record for details and available documents.

Abstracting and Indexing↗
PubMed1979

Xerox telecopier transmission of fetal monitor tracings: a 4-year experience.

A telephone consultation system using the Xerox 400 Telecopier has been established to transmit fetal monitor data to a tertiary center from regional hospitals with limited experience in interpreting this data. This report reviews a 4-year experience with this consultative device, discusses both the advantages and disadvantages of such a program, and recommends the establishment of similar services in other tertiary centers. We believe that the establishment of such services can be of diagnostic and therapeutic benefit to inexperienced medical personnel when first confronted with the concept of fetal monitoring. Hopefully, by so doing, hospital use of fetal monitoring will increase.

Copying Processes↗