Doctor insights on:
Does Alcohol Slow Blood Flow
Alcohol and Blood: This is an excellent question. There are two answers that may sound like they contradict each other. Alcohol thins the blood. This means that it does not clot so easily and too much alcohol, affecting the liver, can lead to easily bruising and such. But, drinking alcohol is also dehydrating. You pee off more fluid than you consume...Which can make the blood thicker and thus lead to slowing.. ...Read moreSee 1 more doctor answer
Raises it, usually: Acutely, like in alcohol poisoning it can lower your blood pressure to shock levels- in fact many alcohol ods die of shock. Chronically, in heavier drinkers (3/day on average or more), it elevates blood pressure, and in fact is a cause of secondary hypertension. For the most part, people with elevated BP should drink very much in moderation, if at all. I ask my pt's to keep it to special occasion. ...Read more
Drinking too much alcohol can raise blood pressure to unhealthy levels: Having more than three drinks in one sitting temporarily increases your blood pressure, but repeated binge drinking can lead to long-term increases. Heavy drinkers who cut back to moderate drinking can lower their systolic blood pressure (the top number in a blood pressure reading) by 2 to 4 millimeters of mercury (mm Hg) and their diastolic blood pressure (the bottom number in a blood pressure reading) by 1 to 2 mm Hg. Heavy drinkers who want to lower blood pressure should slowly reduce how much they drink over one to two weeks. Heavy drinkers who stop suddenly risk developing severe high blood pressure for several days. If you have high blood pressure, avoid alcohol or drink alcohol only in moderation. Moderate drinking is generally considered to be: Two drinks a day for men younger than age 65, One drink a day for men age 65 and older, One drink a day for women of any age. A drink is 12 ounces (355 milliliters) of beer, 5 ounces (148 milliliters) of wine or 1. 5 ounces (44 milliliters) of 80-proof distilled spirits. Keep in mind that alcohol contains calories and may contribute to unwanted weight gain — a risk factor for high blood pressure. Also, alcohol can interfere with the effectiveness and increase the side effects of some blood pressure medications. ...Read more
Studies show caffeine reduces Cerebral BloodFlow 27-40%... does this mean caffeine is damaging brain cells? Why not? Reduced blood flow is NOT good!?!
If that were: The whole truth, caffeine would not be the most widely used psychoactive agent on Earth. Caffeine also enhances alertness, enhances mental focus and improves score for all comers in tests of performance and cognition. So, this is what happens when you take one isolated physiologic response and try to then conclude something more complex about cell function, especially the brain. Neurobiology=??? ...Read moreSee 1 more doctor answer
Do beta-blockers decrease cerebral blood flow? What meds increase cerebral blood flow through cerebral vasodilation?
Yes, ...: Increasing blood flow in response to mental and physical stimulation and exertion takes place to all tissues and organs of the body. During masturbation and sex, more blood diverting to genital organs is expected, but of course, only temporary; this phenomenon is like more blood diverted to gastrointestinal tract for digestion after a full stomach. ...Read more
Can increase it: Heavy alcohol intake (more than 4 drinks a day, or, after a binge) can increase your pressure a lot, by 20 points or more. I have seen patients whose pressure is 160/110 when they are drinking heavily (pint a day), and then have normal pressure of 130/80 once they go sober. Light alcohol (1-2 drinks per day for men, 1 drink / day for women) should not increase the pressure much at all. ...Read more
Yes: When intake of alcohol exceeds the livers capacity to de-toxify it, injury will result and liver tissue can begin to scar. The liver also produces the factors you need to clot. These delicate proteins break down in a short time and must be replaced. If you kill your liver with alcohol, you will eventually not be able to make clotting factors or de-toxify other waste. You may just bleed to death. ...Read moreSee 1 more doctor answer
Measure CO level: An arterial blood gas measures the blood pH (normal 7.40), po2 (partial pressure of oxygen), pco2, partial pressure of co2 and the bicarbonate (sodium bicarbonate) level is calculated. Smoking increases carboxyhemoglobin level with carbon monoxide binding to the hemoglobin displacing oxygen. The po2 is unaffected by carbon monoxide but the hemoglobin delivers carbon monoxide (a poison) to tissues instead of oxygen. ...Read more
Yes. In the brain. : Hypercapnea does increase blood flow in the brain by causing cerebral vessel vasodilation. This is part of a process in the brain termed cerebral autoregulation. It also can lead to peripheral vasodilation by direct effects on blood vessels. This may also lead to increased blood flow. However, this would not be a desirable effect for anything other than the body's normal response to changes in ph. ...Read more
Being anxious when performing on me a liver duplex uls can increased the blood flow to liver from heart? Does anxiety increased blood flow overall?
Anxiety: Anxiety can temporarily increase your heart rate and cardiac output, but it will not adversely affect your test results. There is help for ongoing anxiety (and also depression that your additional info mentions). A psychiatrist can provide a comprehensive evaluation and offer treatment suggestions. ...Read more
Tumors need nutrient: When tumors grow in the brain, they make new blood vessels (angiogenesis). These vessels are not normal compared to the non-tumor vessels. As a result, more blood flows into the tumor, which allows for more tumor growth. Since there is more flow, at any given time there is more blood volume in the tumor. Occasionally, there may be so much flow that it can shunt, or divert, flow from normal brain. ...Read more