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  2. The temperature dependence of essential parameters that define spatiotemporal behavior of cardiac excitation are quantified to help better understand thermal influences on arrhythmia development or suppression such as during hibernation or cardiac surgery.

    Cardiac Arrhythmogenesis and Temperature | Semantic Scholar

    www.semanticscholar.org/paper/Cardiac-Arrhythmogenesis-and-Temperature-Shah-Bien/b17e18abeaff4126aa4fabeede57a8e42e5d96a6
    www.semanticscholar.org/paper/Cardiac-Arrhythmogenesis-and-Temperature-S…
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  3. People also ask
    What causes cardiac arrhythmias?
    The cardiomyocyte clock has previously been linked to cardiac arrhythmias. For example, the genetic deletion or overexpression of the transcriptional regulator KLF15 in mice can lead to abnormal cardiac repolarization and enhanced susceptibility to ventricular arrhythmias 10.

    Distinct circadian mechanisms govern cardiac rhythms and ... - Nature

    nature.com
    What physical harms are caused by arrhythmia?

    Dr. Himanshu J. Vats

    Doctor of Medicine (MBBS) · 1.5 years of exp

    Arrhythmia, which is an irregular heartbeat, can cause a variety of physical harms depending on the type and severity of the arrhythmia. Here are some possible physical harms that may be caused by arrhythmia: Reduced blood flow: Arrhythmia can affect the heart's ability to pump blood effectively, which can lead to reduced blood flow to vital organs and tissues. Blood clots: Certain types of arrhythmia, such as atrial fibrillation, can increase the risk of blood clots forming in the heart, which can then travel to other parts of the body and cause serious health problems like stroke. Heart failure: Over time, untreated arrhythmia can lead to heart failure, which occurs when the heart can no longer pump enough blood to meet the body's needs. Cardiac arrest: In some cases, arrhythmia can cause the heart to stop beating altogether, leading to sudden cardiac arrest. This is a medical emergency that requires immediate treatment. Fatigue and weakness: When the heart is not functioning properly due to arrhythmia, it can lead to fatigue, weakness, and other symptoms of heart failure. Fainting or lightheadedness: In some cases, arrhythmia can cause a drop in blood pressure, which can lead to fainting or lightheadedness. Chest pain: Some people with arrhythmia may experience chest pain or discomfort, which can be a sign of reduced blood flow to the heart. It's important to note that not all arrhythmias cause physical harm, and some may not require treatment. However, if you have symptoms of arrhythmia or are concerned about your heart health, it's important to talk to a healthcare provider for an evaluation.
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    Why do ventricular arrhythmias occur at a time of day?
    Thus, the cell-autonomous propensity for electrical firing is governed by the cardiomyocyte circadian clock, and this inherent rhythmicity is associated with time-of-day susceptibility to ventricular arrhythmias.

    Distinct circadian mechanisms govern cardiac rhythms and ... - Nature

    nature.com
    Does the cardiomyocyte clock regulate ventricular arrhythmias?
    Here, we also show explicitly that the cardiomyocyte clock dictates temporal rhythms in cell excitability and susceptibility to ventricular arrhythmia. Previous studies have shown that wild-type mice are relatively resistant to catecholamine-induced arrhythmias 26, 27. This is in line with our results from the animals’ rest phase.

    Distinct circadian mechanisms govern cardiac rhythms and ... - Nature

    nature.com
    What is the meaning of fatal arrhythmia?

    Dr. Masrath Begum

    MBBS · 4 years of exp

    The most common life-threatening arrhythmia (fatal arrhythmia) are ventricular fibrillation, ventricular tachycardia and prolonged pauses or asystole. This is an erratic, disorganized firing of impulses from your heart's ventricle when this happens, your heart is unable to pump blood resulting in sudden cardiac death
    Q&A: Arrhythmia
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    Are ventricular arrhythmias more likely to occur in the morning?
    Cardiac arrhythmias are a leading cause of cardiovascular death. It has long been accepted that life-threatening cardiac arrhythmias (ventricular tachycardia, ventricular fibrillation, and sudden cardiac death) are more likely to occur in the morning after waking.

    Circadian rhythm of cardiac electrophysiology, arrhythmogenesis, and

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  4. PubMed
    https://pubmed.ncbi.nlm.nih.gov

    Cardiac arrhythmogenesis and temperature - PubMed

  5. Nature
    https://www.nature.com › articles

    Distinct circadian mechanisms govern cardiac rhythms and

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