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| | Cardiac output - Wikipedia, the free encyclopedia |
 | | This technique uses ultrasound and the Doppler effect to measure cardiac output. | | | This advanced technique was developed by NASA, it measures changing resistance in the chest as the heart beats to calculate cardiac output. | | | This technique has progressed clinically (often called BioZ, as promoted by the leading manufacturer in the US) and allowing low cost, non-invasive estimations of cardiac output and total peripheral resistance, using only 4 skin electrodes, with minimal removal of clothing in physician offices having the needed equipment. |
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http://en.wikipedia.org/wiki/Cardiac_output
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| | Critical Care Full text Why measure cardiac output? |
| | Thus, in some patients, measurement of cardiac output is indicated as an aid to prognosis, diagnosis and to monitor the adequacy of therapy. | | | Thus, at least in some patients, measurement of cardiac output is indicated as an aid to prognosis and diagnosis, and to monitor the adequacy of therapy. | | | Thus, the use of cardiac output measures as single variables in defining disease and response to therapy require very large differences to reflect actual changes and, outside of simultaneous oxygen consumption measures, often give little insight into the mechanisms responsible for hemodynamic instability and circulatory shock or their response to therapy. |
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http://ccforum.com/content/7/2/114
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| | EHS: Nursing Diagnosis Handbook: A Guide to Planning Care, 5th edition - Nursing Diagnosis: Decreased Cardiac output |
| | Demonstrates adequate cardiac output as evidenced by BP and pulse rate and rhythm within normal parameters for client; strong peripheral pulses; and an ability to tolerate activity without symptoms of dyspnea, syncope, or chest pain | | | Refer to physical therapy for strengthening exercises if client is not involved in cardiac rehabilitation. | | | Observe for atypical pain; the elderly often have jaw pain instead of chest pain or may have silent myocardial infarctions with symptoms of dyspnea or fatigue. |
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http://www1.us.elsevierhealth.com/MERLIN/Ackley/NDH/Constructor/index.cfm?plan=9
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| | CARDIAC OUTPUT |
| | By comparing a pigeon and a trout, we can determine methods animals use to increase their cardiac output, as well as the volume of oxygen consumed. | | | Unfortunately, using Fick’s principle requires can be misleading in animals where arterial and venous blood may mix, such as reptiles and amphibians, or in animals that uptake a considerable amount of oxygen through their skin. | | | Organisms can improve their oxygen consumption by manipulating functions that increase their cardiac output. |
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http://www.tiem.utk.edu/~gross/bioed/webmodules/cardiacoutput.html
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| | Cardiac Output Measurement |
| | Noninvasive assessment of cardiac output in critically ill patients by analysis of the finger blood pressure waveform. | | | Cardiac output measurement in critically ill patients: comparison of continuous and conventional thermodilution techniques. | | | Comparison of the accuracy of the lithium dilution technique with the thermodilution technique for measurement of cardiac output. |
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http://www.umdnj.edu/rspthweb/bibs/co_measr.htm
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| | Manipulating Cardiac Output and Venous Return Curves |
| | Cardiac output and right atrial pressure are variables that are often used clinically to assess cardiovascular function. | | | Once again, this does not mean that it does not change cardiac output; it only means that it does not change the position of the cardiac output curve. | | | The manipulation of the curves depends on systematically figuring out: first, how an intervention will affect the cardiac output curve, and then how it will affect the venous return curve. |
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http://www.ursa.kcom.edu/Department/LectureNotes/COVRTut.htm
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| | eMedicine - Perioperative Cardiac Management : Article by Davinder Jassal, MD, FRCPC |
| | During the 1970s, several studies reported a 30% risk of reinfarction or cardiac death for patients undergoing surgery within 3 months of an MI, 15% when surgery was performed 3-6 months after an infarction, and 5% when the operation was performed 6 months later. | | | As a result of the stress of the surgical procedure, circulating catecholamine levels are elevated, thereby increasing the risk of ventricular ectopy. | | | A preoperative cardiac risk assessment involves obtaining a thorough history and physical examination, along with a baseline electrocardiogram. |
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http://www.emedicine.com/med/topic3174.htm
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| | Video Transcript - The Determinants of Cardiac Output |
| | The first set is applicable when the heart is in myocardial energy excess and includes mean vascular pressure -- which includes fluid volume and system compliance -- and inlet impedance -- which is the product of a resistance point and a distensible bed upstream from that resistance point. | | | Therefore, I believe we are safe in presuming that the human heart is a non-sucking, intermittent outflow, continuous inflow pump. | | | To answer that question, you must first understand that until this point we've been examining conditions where the pump is exerting excess energy above what was used for circulation. |
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http://cardiovascular.cx/transcript.htm
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| | Lack of Agreement Between Thermodilution and Fick Cardiac Output in Critically Ill Patients* -- Dhingra et al. 122 (3): ... |
| | Rubin, SA, Siemienczuk, D, Nathan, MD, et al Accuracy of cardiac output, oxygen uptake, and arteriovenous oxygen difference at rest, during exercise, and after vasodilator therapy in patients with severe congestive heart failure. | | | Taylor, SH, Silke, B Is the measurement of cardiac output useful in clinical practice? | | | Keinanen, O, Takala, J, Kari, A Continuous measurement of cardiac output by the Fick principle: clinical validation in intensive care. |
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http://www.chestjournal.org/cgi/content/full/122/3/990
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| | LiDCO : Technology - Cardiac Output |
| | Several variants of the basic method have been devised, but usually their accuracy is less good. | | | The original method described by Fick in 1870 is difficult to carry out. | | | Bioimpedance - this method was described by Kubicek et al in 1966 and has recently been reviewed by Critchley (1998). |
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http://www.lidco.com/html/technology/cardiac_output.asp
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| | CARDIAC OUTPUT CURVES |
| | Clinical observations of pulse, pulse pressure and HR as rough indicators of cardiac output (very rough!) | | | This works all the time - balances ventricles, beat to beat adjustment, puts out, within limits, what comes back to it | | | Cardiac output can be measured in the body in a number of ways. |
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http://www.rashaduniversity.com/phcaroutcur.html
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| | Cardiac Output |
| | The cardiac output represents the volume of blood that is delivered to the body, and is therefore an important factor in the determination of the effectiveness of the heart to deliver blood to the rest of the body, (i.e., determining heart failure, inadequate circulation, etc). | | | Cardiac Output is usually measured using the Fick Principle, which relates the cardiac output of the patient to the oxygen consumption, or by thermodilution, in which cold saline is injected into the right atrium and changes in the temperature in the pulmonary artery are recorded. | | | Based on this information, what is this patient's cardiac output? |
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http://www.usc.edu/dept/biomed/bme403/Section_3/cardiac_output.html
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| | Thermodilution measurement of cardiac output in patients with low output: room-temperature versus iced injectate -- ... |
| | BACKGROUND: Measurements of cardiac output with the thermodilution technique add to data for clinical decision making and therefore must be valid and reliable. | | | However, the results of studies on the accuracy of values obtained with room-temperature and iced injectates, especially in patients with high or low cardiac output, have been conflicting. | | | CONCLUSION: The findings support the practice of using room-temperature injectate to measure cardiac output in patients with low cardiac output. |
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http://ajcc.aacnjournals.org/cgi/content/abstract/7/6/436
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| | IngentaConnect Cardiac output measurement by pulse dye densitometry in cardiac s... |
| | We conclude that pulse dye densitometry using indocyanine green 5 mg or 20 mg is inaccurate in anaesthetised patients before coronary artery bypass surgery and cannot be used after surgery because of a high incidence of low pulse dye densitometry signal amplitudes. | | | Cardiac output measurement by pulse dye densitometry in cardiac surgery | | | Agreement between mean thermodilution and pulse dye densitometry cardiac output values was assessed by Bland-Altman analysis. |
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http://www.ingentaconnect.com/content/bsc/anae/2005/00000060/00000010/art00005
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| | Welcome to Physioflow.com - The noninvasive cardiac output |
| | Physioflow performs continuous cardiac output measurements in various clinical conditions. | | | Physioflow is an impedance cardiograph featuring enhanced bioimpedance signal morphology analysis. | | | Physioflow : a new era in continuous noninvasive cardiac output monitoring. |
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http://www.physioflow.com
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| | Mid Carolina Internal Medicine Associates - Cardiac Output Measurement |
| | Mid Carolina Internal Medicine Associates - Cardiac Output Measurement | | | It is the change in cardiac output, up or down, that allows the practitioner to determine the effects of therapy and disease and not the absolute value but to accurately detect changes, the output measurement errors must be consistent. | | | Thermal dilution cardiac outputs are affected by the phase of respiration, particularly during mechanical ventilation and should thus always be measured at the same point in the respiratory cycle (normally end-expiratory) where the effect of breathing (either spontaneous or mechanical) is least. |
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http://www.midcarolina.org/papers/co.measurement.html
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| | Non-Invasive Cardiac Output from Your MP System! |
| | Physiology and Psychology: Introduction to Cardiac Output, Univ. of Montana Bozeman | | | Contact our Sales Department to set up the system that will be right for your application. | | | To measure the index of Cardiac Output, you will also need our ECG100C, DA100C, and the required accessories (electrodes, heart sounds transducer, and leads). |
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http://www.biopac.com/newsletter/spring_2001/cardiac_output.htm
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| | CARDIAC OUTPUT |
| | A measurement of the blood flow through the heart to the systemic (and pulmonary) circulation. | | | Cardiac output can be calculated using the Fick method (oxygen consumption divided by arteriovenous oxygen difference) or by the thermodilution technique, using a Swan-Ganz catheter. | | | Cardiac output is expressed as volume of blood per unit time, or liters/minute. |
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http://www.medhelp.org/glossary/new/GLS_0930.HTM
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| | Philips, Patient Monitoring - PiCCO®
Continuous cardiac output monitoring |
| | Stroke volume variations for assessment of cardiac responsiveness to volume loading in mechanically ventilated patients after cardiac surgery. | | | Clinical studies support that cardiac output measurements obtained using the PiCCO method are comparable to those obtained using traditional right heart thermodilution. | | | Reliability of a new algorithm for continuous cardiac output determination by pulse-contour analysis during hemodynamic instability. |
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http://www.medical.philips.com/main/products/patient_monitoring/products/picco
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| | Determinants of cardiac output: |
| | In physiological terms, afterload can be defined as 'The sum of all those forces which oppose ventricular muscle shortening during systole' - although in a clinical sense it is probably more useful to consider systemic vascular resistance as the appropriate measure. | | | In isolated cardiac muscle, there is an inverse relationship between afterload and the initial velocity of shortening of the muscle (Figure 3). | | | In contrast, if myocardial function is severely depressed, cardiac output may become crucially afterload-dependent as illustrated in Figure 4. |
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http://www.manbit.com/pac/chapters/P42.cfm
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| | Preeclampsia Foundation Forums - Those who had cardiac output tested |
| | I asked my family doctor to give me a prescription for it. | | | Fortunately, my regular OB said the theory could make sense and she was willing to work long-distance with my peri. | | | You would think checking cardiac output is a common procedure. |
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http://www.preeclampsia.org/forum/topic.asp?TOPIC_ID=7080
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| | Cardiac Output Module |
| | Designed to be used in a range of Critical Care environments. | | | It is designed to be used with adult, pediatric or neonatal patients, in a range of Critical Care environments. | | | Produces a thermodilution curve together with numerics for the cardiac output and cardiac index values for display on a variety of HP OmniCare Monitoring Products. |
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http://www.qualmonsys.com/hpds/m1012a.htm
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| | Vitamin C Fails to Boost Aerobic Capacity or Cardiac Output - CME Teaching Brief - MedPage Today |
| | Be prepared to discuss the methods and findings of this study with patients who may ask after reading about it in the news. | | | Advise patients that moderate daily doses of vitamin C may not improve aerobic capacity or cardiac output during endurance exercise in healthy individuals, according to the results of this preliminary study. | | | Plasma concentrations of ascorbic acid increased in all subjects following the acute dose but not the chronic dose of vitamin C. Similarly, concentrations of oxidized low-density lipoproteins were reduced in all subjects after the acute, but not the chronic, dose. |
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http://www.medpagetoday.com/tb1/PrimaryCare/ExerciseFitness/288
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| | BME 403: 11-19-97: Cardiac Output |
| | Heart rate and contractility are both cardiac factors that can be affected by autonomic influences on the heart, while preload and afterload are vascular factors, that are determined in large part by cardiac output. | | | Cardiac output related to body size: ~70 ml/kg/min or ~5 l/min in average-sized human adults. | | | The increased cardiac output reduces venous pressure, which in turn reduces cardiac output. |
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http://www.usc.edu/dept/biomed/bme403/Section_3/c36.html
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| | Cardiac Output |
| | In acute studies the Transonic Transit-Time Flowmeter fitted with a cardiac output probe is the preferred method as it provides a continuous signal. | | | Cardiac Output is traditionally measured in one of two ways. | | | Where minimally invasive procedures are required, Cardiac Output by thermo-dilution is the standard method. |
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http://www.lintoninst.co.uk/cardiac_output.htm
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| | AH196 - EBI100C Cardiac Output Measurement |
| | Cardiac Output can be determined, non-invasively, by employing electrical bio-impedance measurement techniques. | | | Cardiac Output measures are relative and sensitive to electrode type, number and location. | | | In the case of Cardiac Output measures, the relevant tissue includes the heart and the immediate surrounding volume of the thorax. |
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http://www.biopac.com/AppNotes/app196CardiacOut/CardiacOut.htm
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| | APPARATUS FOR MEASURING CARDIAC OUTPUT (EP0374248B1) |
| | An apparatus for measuring cardiac output based upon a dilution method. | | | 13B) for operating a cardiac output from the integral value and the data on the heat capacity which is input in accordance with the thermal dilution method. | | | 14A) for operating a function representing the relation between the cardiac output obtained on the basis of the dilution method and a blood flow velocity obtained when the cardiac output is measured; |
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http://www.delphion.com/details?pn=EP00374248B1
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| | Cardiac Output |
| | In your opinion, which of these (cardiac output or cardiac index) is the most precise for determining cardiac functioning? | | | Gunterman's ECG and cardiac isoenzymes indicate that she has had an anterior Ml. | | | A pulmonary artery catheter has been placed through the right subclavian vena cava. |
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http://www.bakerstuff.com/cardiac_output.htm
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| | cardiac output - definition of cardiac output by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. | | | cardiac output - the amount of blood pumped out by the ventricles in a given period of time; "a resting adult has a cardiac output of about three quarts a minute" | | | cardiac output - definition of cardiac output by the Free Online Dictionary, Thesaurus and Encyclopedia. |
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http://www.thefreedictionary.com/cardiac+output
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| | Cardiac Output Module for Chart |
| | The Cardiac Output Module for Windows provides the user with an analysis tool to easily extract and calculate cardiac output from small animals, using the thermodilution technique and recorded in Chart. | | | The Cardiac Output Settings dialog box allows the user to define the parameters used in the calculation of cardiac output. | | | The user sets the time interval for baseline temperature determination in the Calculate baseline from text box. |
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http://www.adinstruments.com/products/software/modules/cardiac_output.php?id=137
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| | Cardiac Output - Page 2 |
| | C.O. (Cardiac Output) is the volume of blood that is ejected from the heart with each contraction per minute. | | | C.I. (Cardiac Index) takes into account body size and cardiac output. | | | High PEEP due to increase in intrathoracic pressure |
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http://www.mededcon.com/card02.htm
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| | The Determinants of Cardiac Output - Video |
| | This 22-minute video presentation explains fundamental but often misunderstood concepts about the determinants of cardiac output, using Dr. Anderson's hydraulic model of the cardiovascular system. | | | VIDEO ON DVD AND CD-ROM: Medical educators or professionals who would like to obtain a CD-ROM or DVD-R version of "The Determinants of Cardiac Output" for classroom or educational use may contact Dr. Anderson to request a copy. | | | TRANSCRIPT: Click here for the text of "The Determinants of Cardiac Output," with images from the video. |
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http://cardiovascular.cx/video.htm
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| | Cardiac Output Pod by ADInstruments |
| | This probe has a fast response time of 0.005 seconds, which is required for the thermodilution method. | | | The Cardiac Output Pod is suitable for the measurement of cardiac output by the thermodilution method in mice, rats, guinea pigs and rabbits. | | | Included with the Pod is the Cardiac Output Module which provides the user with the ability to easily calculate and extract cardiac output values from the thermodilution curves. |
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http://www.adinstruments.com/products/product.php?id=ML313B
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| | Alterations in Cardiac Output: Decreased |
| | (_) Explore with patient potential etiological factors for decreased cardiac output and provide health teaching. | | | (_) Measure intake and output q 8 hours. |
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http://www.rncentral.com/careplans/plans/cod.html
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| | MicroSim COS , Cardiac Output Simulator |
| | The MicroSim COS, Cardiac Output Simulator is the only stand alone instrument designed to test the performance of thermal dilution cardiac output monitoring instruments. | | | It simulates Baxter Edwards catheter systems and provides more testing capabilities than devices that require connection to another patient simulator. | | | • To test the perfomance of thermal dilution cardiac output monitoring devices |
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http://www.netech.org/productdetail.asp?id=71
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| | Hemodialysis |
| | Description of the principles behind Transonic ultrasound technology technology for measuring vascular access flow, recirculation, cardiac output and dialyzer blood flow. | | | List of 300 references citing ultrasound dilution measurements. |
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http://www.transonic.com/hemodialysis.shtml
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| | johnson ultraviolet cardiac output |
| | Starware also provides related listings for johnson ultraviolet cardiac output | | | Starware search is an excellent resource for quality sites on johnson ultraviolet cardiac output and much more! | | | Contact us and let us know about it and we'll add it to our directory. |
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http://www.national-hero.com/johnson_____ultraviolet__cardiac_output.htm
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