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  2. Valsalva maneuver - Wikipedia

    en.wikipedia.org/wiki/Valsalva_maneuver

    Venous blood can once more enter the chest and the heart; cardiac output increases. Return of cardiac output Blood return to the heart is enhanced by the effect of the entry of blood that has been dammed back, causing a rapid increase in cardiac output (24 seconds on). The stroke volume usually rises above normal before returning to a normal level.

  3. The 'neck rule' could tell you if you're ill enough to skip ...

    www.aol.com/article/lifestyle/2018/01/10/the...

    Speaking to the Huffington Post, Ben Fletcher, fitness and conditioning expert at Push Doctor, said the loss of concentration you may feel when unwell can be dangerous, especially if you're using ...

  4. Neurogenic shock - Wikipedia

    en.wikipedia.org/wiki/Neurogenic_shock

    Neurogenic shock is diagnosed based on a person's symptoms and blood pressure levels. Neurogenic shock's presentation includes: [7] [8] - warm and pink skin - labored breathing - low blood pressure - dizziness - anxiety - history of trauma to head or upper spine. - if the injury is to the head or neck, hoarseness or difficulty swallowing may occur.

  5. Ischemia - Wikipedia

    en.wikipedia.org/wiki/Ischemia

    The signs and symptoms of ischemia vary, as they can occur anywhere in the body and depend on the degree to which blood flow is interrupted. [4] For example, clinical manifestations of acute limb ischemia (which can be summarized as the "six P's") include pain, pallor, pulseless, paresthesia, paralysis, and poikilothermia.

  6. Emergency bleeding control - Wikipedia

    en.wikipedia.org/wiki/Emergency_bleeding_control

    Blood typically exits the wound in spurts, rather than in a steady flow; the blood spurts out in time with the heartbeat. The amount of blood loss can be copious, and can occur very rapidly. [10] Venous bleeding: This blood is flowing from a damaged vein. As a result, it is blackish in colour (due to the lack of oxygen it transports) and flows ...

  7. Transthoracic echocardiogram - Wikipedia

    en.wikipedia.org/wiki/Transthoracic_echocardiogram

    A transthoracic echocardiogram (TTE) is the most common type of echocardiogram, which is a still or moving image of the internal parts of the heart using ultrasound.In this case, the probe (or ultrasonic transducer) is placed on the chest or abdomen of the subject to get various views of the heart.

  8. Obstructive shock - Wikipedia

    en.wikipedia.org/wiki/Obstructive_shock

    In both types, the heart's output of blood (cardiac output) is decreased. This causes a back-up of blood into the veins entering the right atrium. [3] Jugular venous distension can be observed in the neck. This finding can be seen in obstructive and cardiogenic shock. With the decrease cardiac output, blood flow to vital tissues is decreased.

  9. Vasoconstriction - Wikipedia

    en.wikipedia.org/wiki/Vasoconstriction

    The narrowing of blood vessels leads to an increase in peripheral resistance, thereby elevating blood pressure. While vasoconstriction is a normal and essential regulatory mechanism for maintaining blood pressure and redistributing blood flow during various physiological processes, its dysregulation can contribute to pathological conditions.

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