Related Experiment Video

Updated: Sep 17, 2026

Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs
08:19

Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs

Published on: July 12, 2022

Blood volume in cardiac decompensation; determinations by use of radiochromium

W A REILLY, R M FRENCH, F Y LAU

    California Medicine
    |October 1, 1954
    PubMed

    RADIOCHROMIUM HAS THESE ADVANTAGES FOR THE MEASUREMENT OF WHOLE BLOOD VOLUME: it remains in the erythrocytes many hours; it can be measured easily and accurately; the amount of radiation from it is very low.As measured by the radiochromium method, the whole blood volume of normal patients was determined to be 65.6 cc. +/- 5.95 cc. per kilogram of body weight or 2.49 +/- 0.28 liters per square meter of body surface. In a majority of a series of patients with heart disease, hypervolemia was found during right ventricular failure but not in those having left ventricular failure or mitral stenosis alone.

    Keywords:
    BLOOD VOLUMECHROMIUM/radioactiveCONGESTIVE HEART FAILURE/blood in

    More Related Videos

    Cardiac Response to β-Adrenergic Stimulation Determined by Pressure-Volume Loop Analysis08:05

    Cardiac Response to β-Adrenergic Stimulation Determined by Pressure-Volume Loop Analysis

    Published on: May 19, 2021

    Related Concept Videos

    Cardiac Output and Stroke Volume01:11

    Cardiac Output and Stroke Volume

    Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
    In an average resting adult male, the typical cardiac output averages...
    Cardiac Output II: Effect of Stroke Volume on Cardiac Output01:22

    Cardiac Output II: Effect of Stroke Volume on Cardiac Output

    Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
    Preload
    Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
    Imbalances in Cardiac Output01:26

    Imbalances in Cardiac Output

    The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
    CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
    Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

    Cardiac Output I:Effect of Heart Rate on Cardiac Output

    Cardiac Output
    Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
    Effect of Heart Rate on Cardiac Output
    Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart rate...
    Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

    Blood Studies for Cardiovascular System I: Cardiac Biomarkers

    Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
    The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
    Troponins
    Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
    Imaging Studies for Cardiovascular System III: X-Ray01:20

    Imaging Studies for Cardiovascular System III: X-Ray

    The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
    Definition and Purpose
    An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...