A similar formula is used to determine oxygen consumption for walking speeds between 1.9 and 3.7 mph.1 At lower speeds, walking is generally a more efficient process than running. >> VO2 Max Calculator | Aerobic Capacity Keep reading to learn about the formulas, calculations, and equations that are required for respiratory therapy students. Duration of Flow = Oxygen Tank Conversion Factor * Remaining Tank Pressure (psi) / Continuous Flow Rate (L/min) Oxygen Cylinder Conversion Factors D Tank = 0.16 E Tank = 0.28 G Tank = 2.41 H/K Tank = 3.14 M tank = 1.56 This parameter describes the amount of oxygen the individual's body can utilize in one minute. /Annots [] QxCF stream Indirect Calorimetry and Metabolic Cart LITFL CCC Nutrition << Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. PA and Pa in the alveolar gas equation represent the gas pressures in what locations?PA represents the gas pressure in the alveoli. We must consider that the income increase rate is more than the expenditure increase rate. How do you calculate ventilation rate in humans? What is the tubing compliance when the measured volume is 100 mL, and the static pressure is 65 cm H2O?1.5 mL/cm H2O, 44. It is the maximum volume of oxygen that your body is capable of consuming and converting to energy for your working muscles. 1 0 obj <>/Font<>/XObject<>>>>> endobj 2 0 obj [/ICCBased 3 0 R] calculating oxygen cylinder attached to a ventilator duration All resources are student and donor supported. Therefore, the estimated oxygen consumption for the planned transport duration of 2 hours is approximately 712 liters. Note: Respiratory care formulas and equations may vary from one publication to another. Don't forget to do some warm-up and stretching before the runs. The . Most of our vents have the Bias Flow set at 5 LPM FiO2 Oxygen consumption will vary depending on set FiO2 At 100%, the total volume is supplied from the Oxygen tank. Our initial runs to assess E cylinder oxygen consumption of various types of ventilators demonstrate that fluidic and turbine style ventilators consume more oxygen than compressor style ventilators. Pulmonary ventilation values for modern "normal subjects" are much higher, averaging at about 12 . << Did someone say, "5 of PEEP?" What is the formula for Charless law?V1 / T1 = V2 / T2, 15. After collecting the essential data during the test, you only need to enter them into the calculator fields immediately afterward, you can see your maximal aerobic capacity value in ml/kg/min units. What is a Ventilator and Why Would You Need One? - Healthline Inspired O2 (PiO2) PiO2 = FiO2 x (barometric pressure - saturated vapour pressure of H20) PiO2 = 0.21 x (760 - 47) - sea level. VO2 max is an important indicator of physical efficiency (especially aerobic efficiency). Heat pump retrofits are available for small businesses that have an electric account labeled "Small General Service . 4th ed., Cengage Learning, 2013. LTV Series Ventilators | Vyaire Medical Oxygen Delivery (mL O 2 /min) = CaO 2 x CO x 10. What is the PO2 in dry air at a barometric pressure of 760 mmHg?760 x 0.21 = 159.6, 24. In air, what is the mol percentage of argon?1%, 30. PaO 2. mm Hg. A Guide to Oxygen Concentrator Liter Flows So, if youre ready, lets get started. >> Calculate the volume of the released gas (Vg) by multiplying the volume of the liquid nitrogen (in liters) or weight of solid carbon dioxide (in Kg) by the expansion ratio of LN (.682) or the inverse density of CO2 (.552 m3/Kg). The term VO2 max means the same as maximal aerobic capacity, maximal oxygen uptake or maximal oxygen consumption. Arterial Oxygen Content= [Hb (mg/dL) x 1.36 x SaO2 (%)/100] + (0.0031 x PaO2 (mmHg)) Hb - Hemoglobin determination where normal values are considered between 13.5- 18 g/dL for men and 11.5- 16.5 g/dL for women. One verified way to increase your VO2 is by modifying your training routine by adding more high-intensity exercises. Chang, David. By clicking Accept, you consent to the use of ALL the cookies. You need to solve physics problems. /Count 0 You will not be able to export data entered into the Calculator. Pa represents the gas pressure in the artery. Since liquid cryogens can expand by factors of 700 (LN {sub 2}) to 850 (LH {sub e}), the uncontrolled release into an enclosed space can easily cause an oxygen-deficient condition. , Does Wittenberg have a strong Pre-Health professions program? ABSTRACT. Welcome to Version 9.0 of the VAE Calculator. ALternatively, you could just hook an ambubag up to the ETT and then use your flowmeter and pressure gauges to estimate. What is normal carbon dioxide production?200 mL/min, 9. BVEoWS(>Q Keep practicing, I know you can do it! is it possible to run isoflurane through a ventilator? a Breathing rate Step 1: Count the number of breaths taken per minute on the time trace. Cylinder Duration Calculator and Mobile App is available for use online or downloadable at the Mobile App marketplace for iPhone and Android at no charge. Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data. All information these cookies collect is aggregated and therefore anonymous. You will be required to do math in respiratory therapy school. %PDF-1.4 For example, patients commonly use a flow rate of 2 liters per minute, but the flow rate varies by each patient's needs. Pass the TMC Exam using practice questions, quizzes, and real-life practice exams. What amount of volume was lost in the ventilator tubing?60 mL, 45. *Estimated cylinder duration time. Ventilation: Exchange of air between the lungs and the air (ambient or delivered by a ventilator), in other words, it is the process of moving air in and out of the lungs. 45 L/min, 50. What is the expiratory time when the rate is set to 25/min and the inspiratory time is 0.75 seconds?1.65 seconds, 49. endobj How do you calculate minute ventilation? - Studybuff . To calculate VO2 max with resting heart rate: First, calculate your maximum heart rate by multiplying your age by 0.7 and deducting the computed number from 208. It certainly says that if income increases, expenditure also increases. /Producer This cookie is set by GDPR Cookie Consent plugin. Please note that the VAE Calculator will not ask you to enter any patient identifiers (other than dates of mechanical ventilation, which you can change as you see fit). Results: The human lung consumes about 5-6 ml oxygen per minute at an esophageal temperature of 28 degrees C. Prebypass whole-body oxygen consumption measured at nearly normothermic conditions was 198 +/- 28 ml/min. 6 l/min) What are the three forms of consumption formula? What is the formula for cardiac index?CI= Cardiac Output / BSA, 35. Oxygen Calculation Tool on the App Store While mechanical ventilation decreases the O 2 cost of breathing, the mode of ventilation may be equally important. If the value of (By) is higher, the total consumption value will increase. Technical specifications for Pressure Swing Adsorption (PSA) Oxygen Plants The Oxigraf Oxygen/CO2 Analyzers respond in less than a second.. RPE = or > 18. These methods are based on the following: Each of the methods is explained in detail in the section below. How do you calculate oxygen delivery to the tissues? /Parent 4 0 R /Pages 2 0 R The free calculator & app is ideal for technicians, therapists, patients and caregivers to easily calculate the approximate available oxygen remaining in an oxygen cylinder, based on the patients device and cylinders size & contents. Find a good location for running and measure out the distance of exactly 1.5 miles (2414 m). These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. We take your privacy seriously. How to Calculate Vo2 Max | DexaFit benefits, and taxes), a = autonomous consumption (consumption when income is zero. A 43-year-old male patient is receiving volume-controlled ventilation at a rate of 12/min. For these reasons, COVID -19 treatment health - care facilities should be equipped with pulse oximeters, functioning oxygen systems single-use oxygenincluding How do you find the consumption from a table? You will also need a stopwatch and a metronome. The VO2 max calculator offers you five different VO2 max formula-based methods for calculating your maximal aerobic capacity. /Resources 10 0 R A Hybrid Model for Predicting Low Oxygen in the Return Air Corner of The calculation of percentage of oxygen in the air after release of cylinder gas cylinder contents at NTP Volume of gas [Litres] Volume of gas released Volume of gas produced (Metre 3) (Vol gas /1000) Fill in the white boxes and read the percentage of oxygen from the red box. High flow nasal cannula therapy - Hamilton Medical 1. a peak or plateau in oxygen uptake with continued increases in workload. Otherwise, if you are more like a fitness rower and do exercising and rowing without pushing your limits, choose 'Not highly trained'. If you have the correct formula, you can easily calculate the correct answer simply by plugging the numbers in. 3 0 obj Calculating oxygen consumption for Hamilton Medical ventilators /Creator What two factors determine cardiac output?Heart Rate and Stroke volume, 34. [7A\SwBOK/X/_Q>QG[ `Aaac#*Z;8cq>[&IIMST`kh&45YYF9=X_,,S-,Y)YXmk]c}jc-v};]N"&1=xtv(}'{'IY) -rqr.d._xpUZMvm=+KG^WWbj>:>>>v}/avO8 Assessment of oxygen consumption from standard E cylinders by fluidic Adjustable settings for a precise readout. This value can be obtained by dividing the patients tidal volume by what? /Rotate 0 you could disconnect your macine from the wall for 15 minutes, run it off the cylinder in back and calculate the amount of consumption based off the aforementioned loss of pressure calculations. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time. Moreover, additional information about your sex, age, and weight. Predicts outcomes, especially in pediatric patients; helps determine need for ECMO. The cookie is used to store the user consent for the cookies in the category "Performance". VO2 max calculator is intended for every sportsperson who wants to find their maximal aerobic capacity value. Oxigraf provides a complete system for validating the performance of your OBIGG system. Calculate the volume of available oxygen (Vo m3) as 0.2095* (Vr-Vg). For this purpose, we will use the one-mile walk test. If youre interested in getting access to more practice questions (like this one), definitely consider checking it out. Use our online O2 To Go Online Cylinder Duration Calculator below or download the mobile app for free: iPhoneorAndroid. The easiest, fastest, and nicest of all the ways. How is oxygen consumption measured in cellular respiration? In air, what is the mol percentage of nitrogen?78%, 28. This parameter is crucial in terms of any endurance sport and allows you to train effectively as well as properly. /Contents 11 0 R endobj You need to ask yourself questions and then do problems to answer those questions. Answer: In this trace there are 10 peaks during the 60 seconds, so the breathing rate is 10 breaths per minute. We also use third-party cookies that help us analyze and understand how you use this website. FiO2 is monitored within the inspiratory limb of ventilators. << << In the alveolar gas equation, what does R represent?R represents the V:Q ratio of carbon dioxide and is dependent upon the type of metabolism that a person is undergoing. PDF OXYGEN Do You Have Enough - Tampa General Hospital g)}p1p-mXa8QZF76\]gaO3(.m|:2]G%\Uc}`!> $Ef('Efh$36zA'.bE9ba!n\ bG _5kkAY:VxFoJYD\^%)v btNklDMKC ]f]i.5oFIKiVVOkr+I^q7GY#NDRWW2:/U/]3zZoI+Z,t,,p@Z (F^ZI'uV`iXNP 1_hL>L-&~RuNVvdF|IS>P7{$p{@ko Zc~q1vz|W5'`. Always read the labels and follow the products instructions for use. They're common in light commercial applications like restaurants, offices, and retail spaces. IntelliSync+: variable Minute volume in normal subjects. He enjoys using evidence-based research to help others breathe easier and live a healthier life. What is rate of consumption of a reaction? A patient receiving mechanical ventilation has a PIP of 60 cmH2O and a plateau pressure of 45 cmH2O. Indirect calorimetry - Wikipedia ' Zk! $l$T4QOt"y\b)AI&NI$R$)TIj"]&=&!:dGrY@^O$ _%?P(&OJEBN9J@y@yCR nXZOD}J}/G3k{%Ow_.'_!JQ@SVF=IEbbbb5Q%O@%!ByM:e0G7 e%e[(R0`3R46i^)*n*|"fLUomO0j&jajj.w_4zj=U45n4hZZZ^0Tf%9->=cXgN]. Navigator Platform, Quantum Computer Helium Laboratory Oxygen Monitor, Oxygen Deficiency Sensor in Linear Accelerator Tunnel, O2N2 Oxygen Analyzer for On-Board Inert Gas Generation System (OBIGGS) validation, Amount of Spill (liters of LN2 or Kg of CO2). Copyright 2022 ASAFINTECH, Asociacin Salvadorea de Tecnologa Financiera. This test is based on stepping up 16.25 inches (0.41 m) from ground level. +.j+jVzm'vx>T7xUuaDKS7 1AX}|kq~ endobj 4 0 obj <> endobj 5 0 obj <> endobj 6 0 obj <>stream For a better experience, please enable JavaScript in your browser before proceeding. Es la nube de AWS el lugar adecuado para una Fintech? Oxygen consumption varied directly with Vt and inversely with compliance, increasing from 4.8 +/- 0.07 L/min with the HC-500 mL Vt model to 6.2 +/- 0.05 L/min Put your result time into the calculator and read out your VO2 max value. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The dynamic compliance (C DYN) of the lung model for each group was calculated as follows: C DYN = Vt/ (peak airway pressure positive end-expiratory pressure [PEEP]) ( Tables 1 and 2 ). After completing his doctoral studies, he decided to start "ScienceOxygen" as a way to share his passion for science with others and to provide an accessible and engaging resource for those interested in learning about the latest scientific discoveries. PiO2 to Alveoli. Vampire apocalypse calculator shows what would happen if vampires were among us using the predator - prey model. 30.0 mL/cm H2O. hs2z\nLA"Sdr%,lt Thille AW, Mercat A, et al. If both V o 2 and oxygen delivery are calculated as the product of cardiac output and either C(a-v)O 2 or CaO 2, mathematical coupling of data will result. In order to work out the total amount of oxygen required under these changed circumstances, it is necessary to know how to calculate the oxygen consumption for a particular ventilator. As you can see, each question comes with a detailed rationale that explains exactly why the answer is correct. This cookie is set by GDPR Cookie Consent plugin. Measuring rates of reaction Rate is most often calculated using the equation: rate = 1 t i m e where the time is the time for the reaction to reach a certain point or the time for the reaction to be completed. The amount of reactant lost or product gained can be measured by recording the mass in grams (for solids) or the volume in cm 3 (for liquids). FiO. /First 8 0 R Many may also be using new makes or models of ventilators they are unfamiliar with. What is the patients airway resistance?15 cm H2O/L/sec. To calculate your Vo2 max, a physiologist will utilize a formula that includes the rate of your oxygen consumption during the exercise as well as your body weight. /Title What is the formula for stroke index?SI = Stroke Volume / BSA, 37. .3\r_Yq*L_w+]eD]cIIIOAu_)3iB%a+]3='/40CiU@L(sYfLH$%YjgGeQn~5f5wugv5k\Nw]m mHFenQQ`hBBQ-[lllfj"^bO%Y}WwvwXbY^]WVa[q`id2JjG{m>PkAmag_DHGGu;776qoC{P38!9-?|gK9w~B:Wt>^rUg9];}}_~imp}]/}.{^=}^?z8hc' In air, what is the mol percentage of oxygen?21%, 29. Carefusion LTV 1200 Ventilator | Respi USA Check out your result. A patient we recently cared for demonstrated marked changes in oxygen consumption, reflected by changes in continuous . When to Use. The first, titled Arturo Xuncax, is set in an Indian village in Guatemala. 4 0 obj 51. Easy to use online calculator and mobile App for oxygen cylinder duration estimation. Oxygen Consumption (VO2) VO2 = Cardiac Output x C (a-v)O2 Oxygen Extraction Ratio (O2ER) O2ER = (CaO2 - CvO2) / CaO2 FiO2 Estimation for Nasal Cannula FiO2 = 20 + (4 x Liter Flow) Oxygen Cylinder Duration Duration = (Gauge Pressure x Tank Factor) / Liter Flow Liquid Oxygen System Duration Duration = (344 x Liquid Weight) / Flow Cardiac Index (CI) Version 9.0 operates based upon the currently posted VAE protocol. To calculate the marginal propensity to consume, the change in consumption is divided by the change in income. Oxygen Consumption (VO 2) VO 2 = Cardiac Output x C(a-v)O 2 Oxygen Extraction Ratio (O 2ER) O 2ER = (CaO 2 - CvO 2) / CaO 2 FiO . From oxygen in the environment to feeding the tissues, the process has three steps: oxygenation, oxygen delivery and oxygen consumption. Read More, Monitoring of the concentration or partial pressure of oxygen and carbon dioxide (CO2) in respiratory gases requires fast response without overshoot. Use the max heart rate calculator to know what your average heart rate should be during a training session. /Parent 2 0 R They help us to know which pages are the most and least popular and see how visitors move around the site. Respiratory Therapy: Formulas, Calculations, and Equations To receive email updates about this page, enter your email address: Questions about NHSN?Contact us: nhsn@cdc.gov. Select Oxygen Source (s) ( not sure?) How should the initial minute ventilation setting be adjusted for an adult patient with a body temperature of 40 C?Increase it by 30% because the minute ventilation would have to be increased by 10% for each degree above 37 C. 52. What is the minute ventilation?6 L/min, 21. x{ |[9jnIX-Z"Y^dys%'V8NIJ(N)C}@iGg~yLByX"w$vQ"s9;};Ol)&3uQ&>1_q~/5wH9'^pmY7ZpI>Gq:GwG=3#X>gb1s0~4TzdH@?'ld4tLMjY]b\dUfV+J3aji6 ef%x-&L[Lcs=b@Ws,4Bt0CfJ~fdBSL,{K^{) mxI|E4j /Rotate 0 Breathing rate and cylinder pressure will affect actual duration, Email: That's all. Going through practice problems is an effective technique for learning and memorizing all the equations. It can be calculated by multiplying the volume of gas, either inhaled or exhaled, during a breath (the tidal volume) by the breathing rate [e.g., 0.4 liter (or 0.4L) 15 breaths/min = 6L/min]. K0iABZyCAP8C@&*CP=#t] 4}a ;GDxJ> ,_@FXDBX$!k"EHqaYbVabJ0cVL6f3bX'?v 6-V``[a;p~\2n5 &x*sb|! /Type /Outlines This document provides technical specifications as How to Calculate VO2 and VCO2 | livestrong Measure your time and pulse. In the article on this page, we prepared some brief information about what VO2 max is, how to calculate VO2 max, a description of VO2 max tests, and an explanation of how to use this aerobic capacity calculator. Field anesthesia machine ventilators powered by compressed gas are designed for remote locations that may lack a pipeline supply of O 2.This study determined the O 2 consumption of the compPAC ventilator powered by E cylinders when ventilating the Vent Aid Training Test Lung model of high (HC) and low (LC) pulmonary compliance. The basic concept is, as oxygen from the air in the respirometer will be consumed in the reaction; the volume of the oxygen gas decreases, and the pressure decreases as well. First, do the walking test (a detailed description of how to do this properly is in the section above). Put the data into the calculator, and also fill in your age and weight and select your sex. VO2max lab - State University of New York College at Cortland Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. 660 L of o2 in a full tank at 2200 psi, so 660/2200 = x/psi showing. A 52-year-old female patient has been smoking 1.5 packs of cigarettes per day for 30 years. You also have the option to opt-out of these cookies. The rate of a reaction can be calculated by dividing the change in the amount of reactant or product by the time taken, as shown in the equation below. Three minutes step test. /Type /Page Then, put this value and your age into the calculator. (100+ videos). enter the gauge pressure and click on the Calculate Duration button to calculate how long that tank will last. You will be subject to the destination website's privacy policy when you follow the link. Further, if V o 2 and oxygen delivery are evaluated simultaneously, V o 2 must be computed from data independent of the data used to calculate oxygen delivery. The information provided here is intended for healthcare professionals only. Heart rate training keeps you in "the zone". Ventilation rate is expressed as the volume of gas entering or leaving the lungs in a given amount of time. While the basic principle applies to most makes and models, the calculation depends on several parameters that may differ. What would his minute volume be in Liters?13 L/min, 22. If you have been rowing regularly for several years, training at least four days per week, and doing a variety of workout types, we suggest selecting 'Highly trained'. The use of a dual oxygen concentrator system for mechanical ventilation is one of the innovations developed by retrieval team members from . Chang, David. b = marginal propensity to consume (the % of extra income that is spent). However, the results should be pretty similar, without a big difference. What is the most important calculation for the TMC Exam?Ideal Body Weight (IBW) because it is needed to determine the patients initial tidal volume setting for mechanical ventilation. These cookies will be stored in your browser only with your consent. Eating While on a Ventilator. Read and download literature for the Z Vent for EMS, Z Vent for Hospital, and the EMV+ for Military . Hawkins MN, Raven PB, Snell PG, Stray-Gundersen J, Levine BD. You must log in or register to reply here. If the alveolar gas has a PO2 of 100 mmHg, what is the PO2 of the pulmonary capillary blood?100 mmHg, 27. This cookie is set by GDPR Cookie Consent plugin. The products shown here are not available for purchase by the general public. High-flow oxygen through nasal cannula in acute hypoxemic respiratory failure. One reason that our program is so strong is that our . Oxygen is an essential medicine required at all levels of the health care system; only high quality, medical-grade oxygen should be given to patients. If your body isn't used to that kind of sports activity, a few practice runs before the test day might be essential. For instance, if a persons spending increases 90% more for each new dollar of earnings, it would be expressed as 0.9/1 = 0.9. 5. e.g. A medical ventilator is a machine that helps your lungs work. Consumed O 2 was calculated after measuring the mass of . A 61-year-old male patient who weighs 165 lbs is receiving volume control A/C ventilation with a tidal volume of 500 mL. Welcome to Version 9.0 of the VAE Calculator. The Calculator is a web-based tool that is designed to help you learn how the VAE surveillance definition algorithm works and assist you in making VAE determinations. Make a few days of rest after the practice runs, and take the test afterward. What is the formula for alveolar partial pressure of carbon dioxide (PACO2)?PACO2 = VCO2 X 0.863 / VA, 10. In a retrospective study of 74 ventilated neonates with severe hypoxemic respiratory failure, OSI was shown to correlate significantly with the oxygen index in that population. Please note: The oxygen concentrator's pulse-flow . Saving Lives, Protecting People, National Healthcare Safety Network (NHSN), Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Healthcare Quality Promotion (DHQP), DUA FAQs for Health Departments and Facilities, FAQs About NHSN Agreement to Participate and Consent, Inpatient Rehabilitation Facilities (IRF), CDC and CMS Issue Joint Reminder on NHSN Reporting, FAQs About CMS Quality Reporting Programs, Transition of COVID-19 Hospital Reporting, FAQs on Transition of COVID-19 Hospital Reporting, Annual Surveys, Locations & Monthly Reporting Plans, Disseminating Quarterly Data Quality Reports, Pediatric Ventilator-Associated Events (PedVAE), Healthcare Personnel Safety Component (HPS), Weekly Influenza Vaccination Data Reporting FAQs, HCP Influenza Vaccination Summary Reporting FAQs, HAI Pathogens and Antimicrobial Resistance (AR), Antibiotic Use and Resistance (AUR) Module, Device-Associated (DA) Module Data Summary, Facility/Provider Communications Under HIPAA, 2023 Outpatient Procedure Component Manual, 2022 Outpatient Procedure Component Manual, Coming Soon: 2023 Healthcare Personnel Safety Component Manual, 2022 HCP Weekly COVID-19 VACCINATION Module PROTOCOL, 2022 HCP Vaccination Module: Influenza Vaccination Summary Protocol, U.S. Department of Health & Human Services. Resting heart rate value. Faarc, Kacmarek Robert PhD Rrt, et al. endstream VAE Calculator | NHSN | CDC Simply input your device type (Conserver or Regulator), Liter Flow Setting, Cylinder Size and Approximate Fill Level to calculate the approximate cylinder duration. What is the inspiratory time when the tidal volume is set at 800 mL and a flow rate of 40 L/min?1.2 seconds, 47. Turbine technology in the device makes a constant high pressure air source unnecessary enabling mobility. A ventilator is a device that supports or takes over the breathing process, pumping air into the lungs. be added into the pt's. minute volume calculation to determine the true amount of gas being utilized, if you are doing manual calculations. The oxygen consumption is the amount of oxygen that is used up by the organism's body over time. << What is the I:E ratio for a ventilator that is set to deliver a tidal volume of 850 mL at a frequency of 15/min with a flow rate of 45 L/min?1:2.5, 48. /__WKANCHOR_2 [0 /XYZ 63 705.500000 0] Moreover, it is a good predictor of your potential as an endurance athlete or even an indicator of future health. A cardiac index below what value can be life-threatening?< 2.2, 36. If you don't have access to the calculator above simply use the following formula to calculate the minutes remaining in your oxygen tank: Here's what you will need: Tank size & conversion factor for that tank PSIG (amount of pressure remaining in the tank) Flow rate (LPM) Formula: Minutes remaining = PSIG * Tank conversion factor/Flow rate
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