Occlusion

Question: What are the dressings called that you use for topical medication occlusion? I have a topical medication that's supposed to be occluded but I don't know what the dressing is called for that. Occlusion dressings? And I don't know where to buy it. I'd like a cheap source since I have to use it every day. Thank you!

Answer: Occlusive dressing. Go to a surgical supply store or large pharmacy. It will be a heavy almost plastic . On an ambulance we use plastic wrap used in any kitchen. You can do the same.

Question: How can I find a dentist who will make my currently normal occlusion extremely bucked? I've always loved severely bucked teeth and now am ready to become what I've loved in others. In addition to the bucked part, I'd love to have my anterior occlusion made into an open bite. Are dentists allowed to perform such changes if their patients agree and, in fact, actually prefer them? If anyone is knowledgeable about this, any time and cost estimates, given initial healthy dental structures with the age being mid fifties? Though using the money to help another is a good, viable suggestion, one shouldn't assume I've never devoted my time, as a volunteer, for many a just cause; I have. Heck, lots of people spend tons of money on fancy cars, expensive clothes, outrageous vacations and more. Why should this request be considered any different? In many ways it's quite similar (money spent, someone earns it, the economy goes on, and on, etc.).

Answer: I can't say that I would expect a dentist to agree to this (sorry!) due to the likelihood that other issues like difficulty in eating, speaking or larger issues like possible tooth loss, pain and complications would increase the possibility of you (and them) getting into a legal situation. Like an orthopedic surgeon refusing to do an amputation on a person who like to be an amputee. JAMRDH - a dental hygienist

Question: what would be the effect of a large occlusion in the aortic arch on the B P measured in the? what would be the effect of a large occlusion in the aortic arch on the B P measured in the 1. left ventricle, 2. aorta before occlusion 3. right arm?

Answer: 1. Left ventricular pressure increases 2. Pressure in the aorta before the level of occlusion increases and will be almost equal to that in the left ventricle. 2. Right arm presure decreases because the blood vessel to right arm (subclavian artery) arises from the arch at the level of the occulusion.

Question: how can I create an ambient occlusion pass in Maya? Render my scene in different passes, how can I set up a pass for ambient occlusion in Maya 2009?

Answer: Are you asking more for render passes or for ambient occlusion set up? Either way I'll try to explain them. Render Pass Set Up: 1. So the first step would be to go to switch the layer view from "display" to "render". It's under the channel editor in the pannel on the right side. 2. Then Select all of the objects that you want to be affected. (Don't select any Alpha cards with a lot of transparency such as tree leaves or a chainlink fence because it doesn't work with transparent objects. Also you don't have to select lights, because they have no effect, good or bad, so there's no point) 3. Then with the selected objects, click on the button "Create new layer and assign selected objects" It's the one with the weird yellow thing and the blue ball at the top right corner of the render display box. ~This should have added all the right objects into the new render layer. Rename the layer to AO pass or something relavent by double clicking on the new layer. When you click on it double check to make sure everything that you wanted to be in there is in there. To Assign Ambient Occlusion Easy way: 1. Right click on your AO render layer, then go down to "Attributes" 2. in the new window left click on the "Presets" button at the top right. Hold down the left click and go to "Occlusion". ~This should have turned everything in that layer black and assigned a default Ambient Occlusion shader that was automatically made in the hypershade. To Assign AO Hard Way (incase first one doesn't work) ~the first way usually works, but I know sometimes people have bad luck with it, so you can do it the old fashioned way!! yay! It's not really hard, it just takes a bit more time. 1. Open the hypershade and made a "Surface Shader" under "Create Maya Nodes" 2. Switch Maya Nodes to "Create Mental Ray Nodes" 3. Under "Textures" Add the "mib_amb_occlusion" node to the "out color" of the Surface Shader. To do this, you can either hold Ctrl and middle mouse button click and drag over the surface shader (which assigns the default which is usually out color) Or you can open up the attributes for the surface shader, and middle mouse button drag it over to the out colour tab. Either way it works the same) 4. Select all the objects in your AO render layer, then in the hypershade, right click on the surface shader in the hypershade, and Assign to Selected. 5. This one isn't needed, but it makes better results. You now have to change the background to white. Switch your view to your renderable camera, then go to "View" at the top left of the screen. Then go down to "Camera Attribute Editor..." Then open up the Environments tab and change the black to white. (Make sure to change it back to black for your other render passes) ~now you should be ready to render. ***Just a note, you have to be rendering in Mental Ray in order for ambient occlusion to work (you could probably use other ones too, just not Maya Hardware or Software, and I always use Mental Ray).*** Further setup of AO: No matter which way you set up your AO, go to the hypershade, and double click the surface shader. Then switch to the tab "mib_amb_occlusion" *Keep in mind that none of these changes have to be made, but they may affect the quality for the better (and also lengthen your render time, so it's up to you to decide which is more beneficial) 1. Change the "Samples" when ever you change samples keep in mind that it should always be in powers of two because Maya just works better that way. Default is 16. So if you want to increase it start with 32, then 64... You absolutely shouldn't need higher than 256, but even 128 or 64 should be find for most things. ~You can change the the bright and dark, spread and max distance if you want, but I have never had to change these, and the defaults work better anyway. Sorry for being so lengthy, just trying to give you all the information you may need.

Question: What is the technical/ dental term for the Teeth marks on the inside of the cheeks along the line of occlusion? These marks are on the line of occlusion probably on the both sides of the cheeks. These marks form the shape and appear as if have been caused by the outward placement of the lateral teeth. Can someone please tell me what is it that we exactly refer them as? Thanks in advance for helping. Jatin

Answer: I think the scientific term for this kind of condition is called (LINEA ALBA BUCCALIS), and it's probably due to the occluding of teeth on the buccal mucosa of cheek.

Question: Surgeons performed an occlusion of the right carotid artery on my son after an accident. What is this? We've been told this procedure is rarely perfomed on children. He's 9. We'd appreciate any advice/help.

Answer: I've heard of it done on adults to prevent bleeding during head surgery. Hope your son is feeling better.

Question: How do I get and enable Ambient Occlusion on the games I have now? I have l4d, farcry2 and assassin's creed. I don't fully know about AO. It's a fairly new thing to me and I just heard about it recently. They say there is a drive out right now (185 series) that allows you to configure AO settings but I'm not sure if I want to switch out my old one yet. Is AO really included in all the recent games or is it an old technology?

Answer: Are you talking about PC or Console games? Or are you talking about specific PC games that have a feature that allows you to turn Amb Occ on and off? If so, I never knew PC games had that feature. I was under the impression that AmbOcc would be on the game models already, before the game is shipped. Not something that you can add later. Why would a game be playable w/out it? The game would look horrible. Like last gen.. What are the games you have now?

Question: My 13 yr old has branch retinal vein occlusion. Is this linked to any other systemic disease? My daughter has high cholesterol which doctors believe is the main cause of her disorder. However, it is very uncommon in a child her age. I need help in deciding how to proceed as the public health system here in Trinidad is really inadequate. Is there somewhere that I can go to get international medical assistance with this problem? Right now my daughter is taking painkillers regularly because of bad headaches and eye pain.

Answer: hello ,your daughter has high cholesterol levels which indicates a genetic form of hypercholesterolaemia ,this results in cholesterol plaques and emboli to block small blood vessels as in her case the branch retinal vein ,it is a systemic disease and it needs urgent address

Question: Suppose an occlusion in an artery reduces its diameter by 22%, but the volume flow rate of blood in the artery? Suppose an occlusion in an artery reduces its diameter by 22%, but the volume flow rate of blood in the artery remains the same. By what factor has the pressure drop across the length of this artery increased?

Answer: Had this same webassign question. You use Poiseuille's equation...but long story short just do the calculation (1/.78)^4 = 2.7

Question: Occlusion of which artery commonly, typically causes anterior infarct? What does anterior infarct mean? Occlusion of which artery commonly, typically causes anterior infarct? I'm guessing: anterior wall is really right ventricular wall. Right ventricular wall has LAD and right diagonal arteries running down its face. So I'd say anterior infarct is when right diagnoal is blocked. Is this correct?

Answer: The Right Coronary Artery is the one supplying the Anterior area of the heart. This is the most important area of the heart, as it is where the core of your electrical system is located. The Sino-Atrial Node, Atrio-Ventricular node, Bundle of H.I.S., and start of the Bundle Branches are all located in the Anterior region. This is the initial electrical pathway where the heartbeat originates. Without an effective anterior region the heart will not work. Anterior MIs are the most lethal heart attacks. If the blood supply to by the RCA is not restored extremely fast the patient has a very poor prognosis.

Question: Is it possible for an adult, with healthy gums, to move his occlusion if he still sucks his thumb? I'm asking if sucking one's thumb, in one's adult years, can still push your teeth out?

Answer: Yes you can get braces at any age

Question: How can I correct my dog's TMJ occlusion problem? I have a one year old spaniel who has an under-bite. He often gets his top lip stuck and he is hurting it. I know if he were human the option would be braces but what can I do to help my dog?

Answer: Er,why on earth do you imagine being *undershot* {the correct term} is "hurting" it? NOTHING but PROFESSIONAL banding will do anything.... but...why dink around?

Question: Is central retinal artery occlusion correctible after nine months of diagnosis? On the only visit to an opthalmologist I was given Timolol and nothing else was discussed. What should I do at this point?

Answer: I don't do ophthalmology, but I'm pretty sure that it isn't correctable. Eye tissue is pretty delicate & any damage down "down stream" of the occlusion is likely permanent by now.

Question: my test came back daying i had occlusion and stenoisis of the cartiotid artery with cerebreral infraction dr? isnt helping am 44 please help sorry about the bad spelling also have senile osteoporosis at 44 what gives ?

Answer: First lets define the terms in basic english: 1. Occlusion = blockage 2. Stenosis = narrowing of a vessel 3. Carotid artery = the MAIN artery that carries blood from your heart to your head. you have one on each side of the neck. this is the one you may have seen it on TV, where Paramedics feel for a pulse when someone is not responding. 4. Cerebral = related to the brain 5. Infarction = death of tissue usually from lack of oxygen or blood flow. So lets put it all together: You have a blockage and narrowing of the main artery or both arteries in your neck which caused you to have a Cerebral Vascular Accident ( medical term for Stroke ). The reason why your carotids became blocked and narrowed is because of arteriosclerosis or "plaque" that builds up along the walls of the arteries. It gets there mostly from the Cholesterol in our blood. Over time as we age more builds up... it becomes calcified and hardens the artery. Arteries should be soft and pliable not hard and thick. A few reasons why this happens has to do with 1) our diet is high in fat 2) our diet is high in cholesterol 3) our genes because if someone in our family had heart disease or a stroke we are also more likely to get one 4) our own body makes alot of cholesterol, more than it should 5) the process of aging makes arteries damaged 6) lack of exercise to remove fat and cholesterol 7) smoking narrows and hardens arteries. So some of this is to blame on our lifestyle, and some of this is to blame on our ancestors. Strokes can be very mild, so that you don't even realize you had one. Sometimes this is called a "mini stroke". Or Strokes can be very sever and debilitating... so that you could be paralyzed on one side of your body... you may not talk or walk the same... you may lose some vision... and your mind wont work right. Now your Carotids can be partially blocked or fully occluded. They can do a visual image on a screen, after putting dye in your arteries to tell them how much of a blockage is present. Don't worry, its just like an x-ray. It puts a picture on a screen and shows how the blood flows through your body. Usually they will not do anything if you are less than 80-90% blocked, and have had no problems. If you are more than 90% blocked and having problems, they would do something called Carotid Endarterectomy... it's a quick surgical procedure where they go in and "Roto Rooter" the plaque lining the artery to remove the blockage. Think of it like having the Plumber come by to you unblock your sink drain! Now as for the Senile Osteoporosis... it is possible to have this age 44... for one... if you are past menopause, you probably have Post - Menopausal Osteoporosis (Type 1).... This is brought on by the lack of estrogen. Estrogen is a hormone that helps women replace the Calcium in our bones. Calcium is essential for new bone formation. Bones are constantly being broken down and rebuilt. As we age, and not enough calciu,, the bones aren't rebuilt as much or as strong. So they become fragile and likely to break (fracture). Then you can also get Type 2 Osteoporosis. The reason why it's called Senile osteo is because it usually occurs in older people. It is brought on by an age related Calcium Deficiency or Vit - D deficiency. If you live in a cold climate, you haven't gotten enough sun. The Sun helps our bodies to manufacture Vit - D. Women most at risk for Osteoporosis are Thin or small framed. Their bones are smaller. Also white, fair-skinned women because of the lack of sunshine. Lastly, some medications can cause Osteo... ask your doctor about your medications and see what he says. Good Luck to you, Nurse Angie

Question: I am blind in my left eye, from retnal artery occlusion? I am blind in my left eye from retnal artery occlusion. Well maybe, I was DX about 3 months later with Multiple Sclerosis. I am still completely blind in that eye three years later, because they waited to long to A) Patch it B) Do freakin anything. Is there anything that can be done, And please no dumb*** comments this is my vision & I am 26 years old with 2 kids!

Answer: Have you seen a neuro opthamologist, with special expertise in MS?. I've had visual problems for 30 years and was diagnosed with MS 25 years ago. Please join my Yahoo group on MS; http://health.groups.yahoo.com/group/MSResources/ Good Luck

Question: i did bleaching for two patients,they came second day complaining from their occlusion,they cannot close well? they complain from in correct occlusion especially on their anterior anterior when they bite,this was exactly the second day after the bleaching?i donot know why?

Answer: I don't know why either. Was it something they ate? You might get better responses if you posted to the dentistry section.

Question: Aortic Valve occlusion of coronary artery ostia during Left Ventricular systole? I have been told that during left ventricular systole, the openings to the coronary arteries are occluded, or partially occluded, by the cusps of the arotic valve, to prevent blood at too higher pressure entering them. Therefore only allowing blood to flow into the coronary arteries during diastole. Can anyone provide me with a source of information to support this, please. Thanks in advance....:-).

Answer: There is a bit in Wikipedia that supports your information. Not the most reliable source, I know, but the references at the bottom may be helpful. :-) Read the paragraph on coronary flow in the link.

Question: I have an occlusion in my ear, but two doctors told me to live with it. It affects my music; what should I do? I am an aspiring violinist, not just a kid who likes listening to his iPod.

Answer: Perhaps you should check out some blogs concerning music and occlusions. Just go to Google Blogs and I typed in ear occlusion affecting music

Question: how can you get a occlusion while taking plavix? had a stent one year ago . now having chest pain. have been taking plavix ,lipitor,lasix and potassium

Answer: Blockages are slowed by the drugs, but not necessarily stopped in their development. One of the primary mechanisms for the blockages is as follows: Stress, of some type causes some damage to the artery lining. Immune cells attach to the damaged lining. The immune cells can ingest oxidized LDL, which causes them to get larger, and thus peel back a little more of the artery lining. This further damaged artery lining then has more immune cells attached, so the cycle continues. This is why a very low fat diet is critical to slow or stop blockage development, and ingestion of anti-oxidants to keep LDL "large and fluffy", which keeps it from being ingested in the immune cells, and exercise and diet to increase HDL, which helps remove LDL from the blood stream, and uses it for energy. Getting the trapped immune cells, sometimes called foam cells, to stop developing or begin to reduce in size is difficult. Dean Ornish reported a few years ago that on a very strict diet, and doing regular exercise, stress relief, and doing everything right with a select group of patients, that 2/3 of patients were able to have occlusions stay the same or reverse by up to 5% a year for about a 3 or 4 year period. Are you following everything your doctor has recommended ? I am on a very low fat diet because of the severity of my blockages, walk daily 2-3 times, and exercise beside that. I try to keep stress down, and get as many anti-oxidants as I can tolerate. My doctor expects my ankles to swell, but they have not done it at all. Yet. When I describe chest pain, he always expects it to be large, even if I say it isn't. We usually get worse; few patients improve. Your best measure if if exercise gets easier, and blood pressure improves allowing you to reduce medications. But we have permanent lifestyle changes to make if you want to stay comfortably among the living and breathing.

Question: explain the clinical features resulting from occlusion of the blood vessel in the carotid artery? explain the clinical features resulting from occlusion of the blood vessel in the carotid artery?

Answer: The carotid artery is the blood vessel...there is no vessel in that blood vessel. When you say carotid occlusion the most important part is the internal carotid portion. If you clamp the internal carotid or the common carotid you lose one of the major blood supplies to the brain on that side. Fortunately, most people are able to compensate for this and only 20% will have significant cerebral ischemia/stroke because other blood vessels can compensate and supply the full brain with blood. If there is a stroke there will be weakness/numbness or other deficits related to that side of the brain and therefore affecting the opposite side of the body. If the carotid occludes due to atheroma/clot formation it gets a bit more complex. If an atheroma forms slowly over a long time there is extra time for other blood vessels to compensate when it finally occludes. Unless, that final occlusion is with a clot that can easily break off and cause stroke at the time of occlusion. Likelihoods in these cases depend on the specific circumstances and probabilities are not well quantitated. If you clamp the external carotid there is almost always sufficient collateral flow so the non-cerebral areas that supplies rarely infarct.