Doctor insights on:
Hypoxia Causes Vasoconstriction
Hypoxia, is a condition in which the body as a whole or a region of the body is deprived of adequate oxygen supply. It is classified into 4 groups: - hypoxemic - oxygen is low - anemic - decreased ability for hemoglobin to carry oxygen. - ischemic - decreased blood flow. - histotoxic - oxygen is reaching the cells, but the cells are unable to ...Read more
Not whole body: In fact more parts of the body will have vasodilation, as in organs and muscles you then resort to anaerobic respirations which causes Lactic Acid production and causes vasodilation. The skin on the other hand thee may be vasoconstriction to preserve the flow of oxygen to the essential organs. ...Read more
Would chronically high catecholamines inducing vasoconstriction result in reduced Cerebral Blood Flow and Hypoxia? Why or why not?
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Temporary: Adderall is cleared quickly by the body and the vasoconstriction would resolve after clearance. Continued administration of the medication will likely result in the body adjusting so that the affect will not continue to occur. If it does then an alternative medication must be considered. Best regards. ...Read more
Can monosodium glutamate cause vasoconstriction (to any degree in any part of the body) in some people?
No... not as yet: No clinical evidence suggests that MSG promotes, incites or exacerbates disease states such as hypertension. When used as a seasoner to foods such as soups it's presence allows for up to 30-40% reduction of sodium chloride, which can exacerbate disease such as congestive heart disease. ...Read more
If the caffeine cause vasoconstriction of the kidney then the glumerolus is also vasoconstricted, then why do we void a lot if we drink coffee?
I read that psuedophedrine's mode of action is vasoconstriction (narrowing in arteries). So does this mean that it causes arteriosclerosis?
No: Vessels narrowing, is temporary through smooth muscle contraction in the vessels wall. While arteriosclerosis, stands for hardening of the vessel walls due to deposition of fat / calcium, that's why people with hypertension better not take pseudoephedrine which can raise their blood pressure further, wish you wellness ...Read more
Does an adrenaline surge (from anxiety or exercise) when taking a non-selective B-blocker cause coronary vasoconstriction? Selective B1-blckr better?
Beta blockers: B blockers are used to treat angina caused by coronary disease, and they are effective. They reduce heart rate and the workload of the heart, including response to exercise. With very high norepinephrine conditions, eg. pheochromocytoma, blocking beta can cause unopposed alpha and raise BP. But that is a very rare condition. ...Read more
Nicotine causes vasoconstriction. Does the vasoconstriction decrease blood vessel volume at the same time?
I took Seroquel (quetiapine) for a while, I have noticed penis shrinkage, I also read about someone else with this problem. Seroquel (quetiapine) cause vasoconstriction?
Not much evidence: I am not finding much quality evidence for this side effect you describe. I am seeing that Seroquel (quetiapine) can rarely cause painful or prolonged erections and difficulty obtaining erections, but nothing from reliable sources about decreased penis size. Plus, if you are no longer taking Seroquel (quetiapine) but still experiencing this, I would not blame the Seroquel (quetiapine) necessarily. Talk to your prescribing doctor. ...Read more
Yes: Yes you can call spasm of the corner arteries avoid this with significant coronary disease. ...Read more
Do TCAs cause increased adrenaline, in turn vasoconstriction and increased blood pressure? Could this increase angina symptoms, cause ED?
More Info please:
We need more information...What do you mean by "TCA"?
Dr Z ...Read more
Smoking is making me have attacks. I think I might have a blockage in vertebrobasilar artery secction. Ischemia caused by vasoconstriction. Tia?
Need more info: In order to give you an informed answer, any physician would need more information on what you mean by attacks that are triggered by smoking. ...Read more
No evidence seen:
Mididrine is an alpha1-agonist and exerts its actions via activation of the alpha-adrenergic receptors of the arteriolar and venous vasculature, producing an increase in vascular tone and elevation of blood pressure.
There is some recent evidence in animal coronaries there are Alpha and beta receptors in large coronaries and beta in small coronaries, but no data avialabe for midodrine. ...Read more
Does a cigarette cause coronary artery vasoconstriction? If yes, wouldn't this cause a angina if you started exercising?
Vasoconstriction: Cigarettes are associated with coronary artery vasoconstriction. This constriction could cause angina if combined with exercise in some people, but it would not do so in everyone. Much of the response would be based on the underlying health of the heart and coronary arteries. ...Read more
If Nictotine causes coronary & cerebral vasoconstriction why doesn't it cause angina or light headedness in people running with a HR of 180BPM?
Internal controls: Dominate responses, not chemistry administered from outside; despite marketing to the contrary. Medicine is low-Tech: the Hi-Tech (as embodied Soul↔Mind↔Brain↔Body creatures sending >1, 000, 000 orders/sec brain→body with similar feedback) is within. Artery & arteriole control is from brain plus local control. Study: http://goo. Gl/zZT5ou & https://goo. Gl/xqf4e4 for better understanding. ...Read more
Not: It may hip-hop diverts blood to limb muscles..........Joking. ...Read more
Could midodrine cause too much vasoconstriction in the brain and cause reduced blood flow and even brain ischemia?
Midodrine: This is a very rare reported side effect, which is not proven to be definitely related to midodrine. ...Read more
Does nicotine cause a big vasoconstriction effect on coronary arteries? If any how long does it last? Surely body would override to myocardium needs?
If I listen to really fast music, where does epinephine or norepinephrine get released? In temporal lobe? Wud it cause vasoconstriction in temp lobe?
Got dysautonomia, causes cerebral vasoconstriction resulting in lightheadedness daily, brain mri normal, why does it constrict? How do dilate? Bp norm
Dysautonomia causes over vasoconstriction in brain & reduced cerebral blood flow. Is there any vasodilator drugs I can ask my doctor about for this?
If there is vasoconstriction to your arteries and veins due to consistent adrenaline like from pheochromocytoma, can that cause delayed wound healing?
Yes, I suppose: Theoretically. But pheo's are so rare that no large studies have been done, I am sure. It would only be during those periods when vasoactive chemicals were actually circulating. In people who get drugs in order to raise blood pressure from septic shock, there is probably impaired wound healing. ...Read more
I get freezing cold after eating refined carbs. Bread rice etc vasoconstriction. Hands turn dark purple, white. Lips freezing. Paleness. Possible cause?
Are you referring to calcium channel blocker? The drugs you are talking about such as viagra (sildenafil) are Phosphodiesterase inhibitors. They will treat ed but I am not sure what you mean by vasoconstriction. The PDI's will prevent the release of blood from the organ prematurely and there by treat the ED.
See your doc for further info. ...Read more
Is it true that when vasoconstriction occurs there is less absorption of drugs bec. Of decreased permeability?
Vasoconstriction med: Yes.Get a more detailed answer ›
Vasoconstriction: Vasoconstriction is a phenomenon where in the blood vessels constrict in response to various physiological or pathological factors. Constriction of vessel results in lesser blood flow and increases the blood pressure. It may occur in acute blood loss, cold environment, sepsis, septic shock, etc. ...Read more
See below: Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, particularly the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in staunching hemorrhage and acute blood loss. ...Read more
Midodrine: People react differently to the same dose of drugs, you should discuss with the dr. Who knows you. ...Read more
Arteries, not veins:
buerger's disease is a rare disorder associated with heavy smoking. ...Read more
Could dmaa be used in conjunction with l-theanine to counteract the dangerous vasoconstriction of dmaa?
Dmaa: Don't understand your abbreviations. It is dangerous to use them as they may be confused. Let's chat. ...Read more
Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, particularly the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in staunching hemorrhage ...Read more