DocumentCode :
3078319
Title :
A system for the measurement of drop volume of intravenous solutions
Author :
Leor, Ron ; Rabinowitz, Babeth ; Kaplinsk, Elieser
Author_Institution :
The Heart Inst., Tel-Aviv Univ. Sch. of Med., Israel
fYear :
1989
fDate :
19-22 Sep 1989
Firstpage :
405
Lastpage :
406
Abstract :
The accuracy of drug delivery by drop-counting infusion pumps depends among other considerations, on the assumption that drop volume is constant. This assumption may hold true in most cases, except for surface active agents. Lowering the surface tension causes drop size reduction and a decrease in actual drug flow when delivered by drop-counting infusion pumps. To determine the number of drops per milliliter of intravenous solutions, a system comprising an infusion set connected to the bottom of a vertically mounted 5-ml graduated pipette has been developed. A device containing a light source and a photoelectric cell was interfaced to an Atari 104ST microcomputer by means of an analog-to-digital converter and then attached to the filter of the infusion set. An assembler routine detected the falling drops and a main BASIC program calculated the cumulative number of drops and the instantaneous drop rate. Preliminary experience showed that this surface tension lowering effect may account for decreases of up to about 25% in drug delivery when drop-counting infusion pumps are used and thus may have practical clinical consequences
Keywords :
biomedical equipment; biomedical measurement; computerised instrumentation; medical computing; microcomputer applications; patient treatment; volume measurement; Atari 104ST microcomputer; BASIC program; analog-to-digital converter; assembler routine; drop volume measurement system; drop-counting infusion pumps; drug delivery accuracy; instantaneous drop rate; light source; photoelectric cell; surface active agents; surface tension; Analog-digital conversion; Digital filters; Drug delivery; Gravity; Light sources; Microcomputers; Monitoring; Pumps; Surface tension; Volume measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers in Cardiology 1989, Proceedings.
Conference_Location :
Jerusalem
Print_ISBN :
0-8186-2114-1
Type :
conf
DOI :
10.1109/CIC.1989.130579
Filename :
130579
Link To Document :
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