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Related Concept Videos

Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...

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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Detecting ischemic danger at the source.

Carina Stanton

    AORN Journal
    |September 9, 2009
    PubMed
    Summary
    This summary is machine-generated.

    The In-Vivo Optical Spectroscopy (INVOS) System uses near-infrared spectroscopy for noninvasive monitoring of blood oxygenation. This vital sign information helps perioperative professionals detect and manage oxygenation issues, preventing complications.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Physiological Monitoring

    Background:

    • Cerebral and somatic blood oxygenation are critical physiological parameters.
    • Monitoring oxygenation noninvasively can aid in early detection of complications.
    • Existing methods may have limitations in real-time, site-specific measurements.

    Purpose of the Study:

    • To introduce the In-Vivo Optical Spectroscopy (INVOS) System.
    • To highlight its capability for real-time, site-specific blood oxygenation monitoring.
    • To emphasize its utility for perioperative professionals.

    Main Methods:

    • Utilized near-infrared spectroscopy (NIRS).
    • Employed the INVOS System for noninvasive oximetry.
    • Measured de-oxygenated and oxygenated hemoglobin in red blood cells.

    Main Results:

    • The INVOS System provides real-time, site-specific measurements.
    • It monitors both de-oxygenated and oxygenated hemoglobin.
    • The technology functions as a noninvasive oximeter.

    Conclusions:

    • The INVOS System offers valuable vital sign information.
    • Perioperative professionals can use this data to detect and correct oxygenation issues.
    • Early intervention can potentially prevent poor patient outcomes.