(EL5100) Hemodynamic Calculations

10232019, 10:36 PM
(This post was last modified: 10232019 11:06 PM by SlideRule.)
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(EL5100) Hemodynamic Calculations
Letter to the Editor from ANESTHESIA AND ANALGESIA, Vol 59, No 7, July 1980 pg519
"Hemodynamic Calculations To the Editor: In a recent article … {The hemodynamic tracking system: a method of data management and guide for cardiovascular therapy. Anesth Analg 59:169174, 1980} … displayed a very useful program for simplifying the repetitive calculation of hemodynamic variables in the operating room by using a handheld programmable calculator. They used a TI59 calculator … As an alternative, I would like to mention a less expensive calculator which we have found useful, namely the SHARP EL5100 … Although lacking the programming size and data storage, the facility of magnetic tape program insertion and the ability to perform iterative loops of the TI59, the EL5100 … has a LCD display with a 1000hour battery life, is compact, has efficient program editing and correcting features, and is programmed by algebraic statements rather than machine instructions. Also, memory is preserved during power off. To use this calculator with the format suggested … insert the following program in the AER mode: f(ABCDEFG) = B + A, 1 Exp 3 X B + AC, (DF) x B + AC x 13.6, (DG) x A + B, (EF) x A f B Program insertion requires about 1 minute. Next in the COMP mode, the calculator will interrogate the user for the values of A to G: A, body surface area (m²); B, cardiac output (L/min); C, pulse rate; D, mean systemic blood pressure (torr); E, mean pulmonary arterial pressure (torr); F, mean pulmonary capillary wedge pressure (torr); and G, mean right atrial pressure (torr). If body surface area is unknown, height (cm)°‧⁷²⁵ X weight (kg)°‧⁴²⁵ X 7.184 X 10⁻³ may be entered and the calculator will enter the calculated body surface area into memory A. The calculator will then show five consecutive answers: ANS 1 = cardiac index (L/min/m²); ANS 2 = stroke volume index (ml/beat/m²); ANS 3 = left ventricular stroke work index (gm/beat/m²), ANS 4 = systemic vascular resistance (resistance units), and ANS 5 = pulmonary vascular resistance (resistance units). Nathan Leon Pace, MD Assistant Professor Department of Anesthesiology University of Utah College of Medicine" The TI59 program listing has 161 locations. emphasis mine BEST! SlideRule 

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(EL5100) Hemodynamic Calculations  SlideRule  10232019 10:36 PM
RE: (EL5100) Hemodynamic Calculations  Valentin Albillo  11072019, 04:11 PM

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