E-cigarettes With Nicotine Cause Blood Clotting, Increased B
According to research presented at the European Respiratory Society International Congress using e-cigarettes containing nicotine causes an immediate increase in the formation of blood clots and deterioration in the ability of small blood vessels to expand and dilate, as well as raised heart rate and blood pressure. Researchers say these effects are similar to those caused by smoking traditional cigarettes and with long-term use; they could result in a heart attack or stroke.

The study was presented by Gustaf Lyytinen, a clinician at Helsingborg Hospital and researcher at the Karolinska Institute in Stockholm, Sweden. He and his colleagues carried out detailed experiments with a group of 22 women and men aged between 18 and 45 years who were occasional smokers but otherwise healthy.

Each volunteer was tested before and after taking 30 puffs from an e-cigarette containing nicotine, and before and after 30 puffs from an e-cigarette not containing nicotine. These two sets of tests were carried out on separate occasions, at least one week apart. On each occasion, the researchers measured volunteers' heart rate and blood pressure and collected a blood sample before they used the e-cigarettes, then 15 minutes after use and again 60 minutes after use.

Researchers also carried out tests to measure any impact on the circulation of blood through the body's tiny blood vessels, before volunteers used e-cigarettes and 30 minutes afterwards. These tests use a laser to visualise how well blood vessels in the skin are able to dilate and therefore regulate the supply of blood around the body.

Comparing the results of the tests, researchers found that using e-cigarettes containing nicotine created a set of immediate short-term changes in the volunteers. Dr Lyytinen and his team discovered an average 23 per cent increase in blood clots after 15 minutes that returned to normal levels after 60 minutes.

There were also increases in volunteers' heart rates (from an average of 66 beats per minute/bpm to an average of 73bpm) and blood pressure (from an average of 108 millimetres of mercury/mmHg to an average of 117mmHg). Researchers found that the volunteers' blood vessels became temporarily narrower after they used nicotine-containing e-cigarettes.

These effects were not seen after volunteers used e-cigarettes that did not contain nicotine. Nicotine is known to increase levels of hormones such as adrenaline in the body, which in turn can increase the formation of blood clots.

Source:
https://www.hindustantimes.com/lifestyle/health/ecigarettes-with-nicotine-cause-blood-clotting-increased-blood-pressure-study-101630978932568.html
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