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Showing posts with label Heart rhythm. Show all posts
Showing posts with label Heart rhythm. Show all posts
Thursday, 21 September 2017
E-cigarette with nicotine changes adrenaline in nonsmokers heart
Healthy nonsmokers experienced increased adrenaline levels in their heart after taking one electronic cigarette with nicotine but there were no increased adrenaline levels when the study subjects used a nicotine-free or empty e-cigarette.
Unlike cigarettes, e-cigarette have no combustion or tobacco. Instead, these electronic, handheld devices deliver nicotine with flavoring and other chemicals in a vapor instead of smoke.
E-cigarettes produce fewer carcinogens than tar of tobacco cigarette smoke, they also produce nicotine.
E-cigarette users have elevated sympathetic nerve activity which increases adrenaline directed to the heart and are more susceptible to oxidative stress. Researchers used heart rate variability obtained from a prolonged, non-invasive heart rhythm recording. Heart rate variability is calculated from the degree of variability in the time between heartbeats.
This variability may be indicative of the amount of adrenaline on the heart.
heart rate variability test to link increased adrenaline activity in the heart with increased cardiac risk. People with known heart disease and people without known heart disease who have this pattern of high adrenaline levels in the heart have increased risk of death.
In the first study to separate the nicotine from the non-nicotine components when looking at the heart impact of e-cigarettes on humans, researchers studied healthy adults who were not smoking. Researchers measured cardiac adrenaline activity by assessing heart rate variability and oxidative stress in blood samples by measuring the enzyme plasma paraoxonase PON1.
They discovered that exposure to e-cigarettes with nicotine, but not e-cigarettes without nicotine, led to increased adrenaline levels to the heart, as indicated by abnormal heart rate variability. Acute electronic cigarette use with nicotine increases cardiac adrenaline levels. And it's in the same pattern that is associated with increased cardiac risk in patients who have known cardiac disease and even in patients without known cardiac disease.
haleplushearty.blogspot.com
Tuesday, 8 August 2017
Vyxeos for Acute Myeloid Leukemia
Food and Drug Administration has approves Vyxeos (daunorubicin and cytarabine) Liposome for Injection for Certain Types of Poor-Prognosis Acute Myeloid Leukemia
The drug is for the treatment of adults with two types of acute myeloid leukemia (AML): newly diagnosed therapy-related AML (t-AML) or AML with myelodysplasia-related changes (AML-MRC).
Vyxeos is a fixed-combination of chemotherapy drugs daunorubicin and cytarabine. Vyxeos combines two commonly used chemotherapies into a single formulation that may help some patients live longer than if they were to receive the two therapies separately.
Acute myeloid leukemia AML is a rapidly progressing cancer that forms in the bone marrow and results in an increased number of white blood cells in the bloodstream. It occurs as a complication of chemotherapy or radiation in patients treated for cancer five years after treatment.
Patients who have a history of serious hypersensitivity to daunorubicin, cytarabine or any component of the formulation should not use Vyxeos.
Patients taking Vyxeos should be monitored for hypersensitivity reactions and decreased cardiac function.
Common side effects of Vyxeos are: hemorrhage, fever with low white blood cell count, rash, swelling of the tissues, nausea, inflammation of the mucous membranes, diarrhea, constipation, musculoskeletal pain, fatigue, abdominal pain, shortness of breath, headache, cough, decreased appetite, abnormal heart rhythm, lung infection, blood infection, sleep disorders and vomiting.
haleplushearty.blogspot.com
Friday, 14 July 2017
Working for long hours causes irregular heartbeat
According to the latest research, working more than 55 hours a week increases the risk of developing serious heart problems.
Long hours of work increases the risk of irregular heartbeat by 40 per cent than those that work for normal hours or less while long shifts increase the risk of stroke.
Atrial fibrillation is the most common heart rhythm problem, it is affecting many people and can lead to stroke, heart failure and dementia. Researchers discovered that long working hours are associated with an increased risk of atrial fibrillation.
Common cause of cardiovascular disease are older age, male sex, diabetes, high blood pressure, high cholesterol, overweight, smoking and sedentary lifestyle.
haleplushearty.blogspot.com
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