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  2. Vitamin D toxicity - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_toxicity

    Vitamin D compounds, specifically cholecalciferol (D3) and ergocalciferol (D2), are used in rodenticides due to their ability to induce hypercalcemia, a condition characterized by elevated calcium levels in the blood. This overdose leads to organ failure and is pharmacologically similar to vitamin D's toxic effects in humans.

  3. Heart failure with preserved ejection fraction - Wikipedia

    en.wikipedia.org/wiki/Heart_failure_with...

    Heart failure with preserved ejection fraction (HFpEF) is a form of heart failure in which the ejection fraction – the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when the left ventricle is maximally filled – is normal, defined as greater than 50%; [1] this may be measured by echocardiography or cardiac catheterization.

  4. Heart failure - Wikipedia

    en.wikipedia.org/wiki/Heart_failure

    Heart failure with recovered ejection fraction (HFrecovEF or HFrecEF): patients previously with HFrEF with complete normalization of left ventricular ejection (≥50%). [64] [65] Heart failure may also be classified as acute or chronic. Chronic heart failure is a long-term condition, usually kept stable by the treatment of symptoms.

  5. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin’s epidermis, triggered by a photochemical reaction with ...

  6. Pathophysiology of heart failure - Wikipedia

    en.wikipedia.org/wiki/Pathophysiology_of_heart...

    The main pathophysiology of heart failure is a reduction in the efficiency of the heart muscle, through damage or overloading. As such, it can be caused by a wide number of conditions, including myocardial infarction (in which the heart muscle is starved of oxygen and dies), hypertension (which increases the force of contraction needed to pump blood) and cardiac amyloidosis (in which misfolded ...

  7. Diastolic function - Wikipedia

    en.wikipedia.org/wiki/Diastolic_function

    Parallel to "diastolic function", the term "systolic function" is usually referenced in terms of the left ventricular ejection fraction (LVEF), which is the ratio of stroke volume and end-diastolic volume. [2] Due to the epidemic of heart failure, [3] particularly the cases determined as diastolic heart failure, it is increasingly urgent and ...

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