What causes the first heart sound or the 'lub'?
956986
The first heart sound is due to the closing of the atrioventrical valves (i.e. the mitral and tricuspid valves). It is due to the leaflets of the valves snapping together under pressure, just before the ventricles contract. \n\nThis is generally louder than the closing of the pulmonary and aortic valves, which cause the dup sound.
628527
you should see your doctor to rule out something serious. They will make sure it's not your heart.
180730
Are you saying that you have signs of a heart murmur? Have you checked your own heart beat with a stethoscope and check your blood pressure? A systolic murmur would include uncoordinated heart beats at the start of systole due to valvular problems in the heart...the 1st "lubb" sound you hear while taking someone's b/p. Have a nurse or doctor check it out before you assume. When I thought I was have a referred pain to my heart from on my left arm, my ECG proved me wrong. Get an Electrocardiogram done, if the PR interval and QRS complex shows atrial fibrillation with f-waves, then, you may be right. Otherwise, get the stress test to be sure. I am getting one done in a couple of weeks to double check. It's always good to check on one's health when in suspicion of any irregularities.
604297
Tinnitus is more of a ringing in the ear - Sounds more like a circulation thing - the blood vessels in the ear are some of the thin-est in the body. - even a slight constriction will sound like a drum - you're likely hearing the sound of blood trying to get through after every heart beat. - My mom had carotid surgery for blockage, and before she did the noise in her ear was deafening - she said it was like rushing water - actually kept her from sleeping. - I'd see a Dr. - Just to be funny, you could try some aspirin or Tylenol (thinner, anti-coagulant) and see if there's a difference. - If there is, it's probably a circulatory thing. - an ultrasound will confirm, but a Dr. should be able to listen with a stethoscope and get an idea if you've got some pathways that are blocked. - Do get it checked. - Depending on your age and health, blockages can lead to stroke. - Hope it's nothing at all.
32410
bells palsy...no!!! that involves your face.  Heart?? highly unlikely, an EKG WILL diagnose a cardiac event in the making and WILL find past cardiac events.  Insist that your doctor do a doppler study on your cartoid arteries in your neck to check for blockages, the lack of blood flow to the brain will cause seizures and the fatigue you feel is call being postictal.  if you are still skeptical of the EKG, have a 12 lead EKG done.  my grandfather had similar problems and the doppler study found blockages, they were fixed and he is now FINE.
992043
Fire crackers do create sudden sound that causes sudden hump in the usual sound waves we have been exposed to. This sudden wave can cause heart attacks, rip our eardrums etc. Yes you are correct.
368832
Nikki - I'm happy to give you some information as a cardiologist, but the best thing for you to do is to go back and see your cardiologist in order to have these questions answered because there are several things important to making a diagnosis that you don't mention.  One of the big factors is how old you are and what your risk factors for coronary disease are (high blood pressure, lipid levels, family history, whether you smoke).  Also, it helps to know what brings on your shortness of breath and/or chest discomfort.  Is it with activity only?  Does it happen at random?  How long does it last?  What makes it go away?\n\nLet's talk about your bicuspid aortic valve first.  A bicuspid aortic valve is an aortic valve that has developed abnormally such that two of the three cusps have fused into one.  There are two main issues with this.  The first is that bicuspid aortic valves have a much higher than normal tendency to become stenotic, meaning it can become calcified, hardened, and interfere with the normal ejection of blood from your heart.  The first sign of this would be a heart murmur.  Over time, if the valve becomes severely stenosed, it can cause chest pain, shortness of breath with activity, or fainting spells.  Patients with bicuspid aortic valves should undergo routine echocardiograms every one to two years to assess the valve function.  Once the valve becomes severely stenosed, surgery to replace the valve should be discussed.  Not all patients with bicuspid valves will go on to have aortic stenosis, but those that do typically require surgery in their 40's or 50's.\n\nThe second issue with patients with bicuspid aortic valves is that they commonly have aneurysms (or dilatation) of the aortic root and/or ascending aorta.  This is important because patients with a bicuspid aortic valve are also at a higher risk for dissection (a tear in the lining of the aorta) than other patients with the same degree of aortic dilatation.  Therefore, this is also something that should be followed by serial echocardiograms.  The recommendation for surgery in a patient with bicuspid aortic valve is an ascending aortic aneurysm of approximately 5.0 to 5.5cm, but this varies somewhat from doctor to doctor.  (This is a bit earlier than would be recommended for a patient without a bicuspid aortic valve.)\n\nBeta-blockers, such as atenolol, have been shown in one study to reduce the rate of growth of the ascending aorta in a group of young males with Marfan syndrome.  Since patients with bicuspid aortic valves have histologically similar changes in their aortas, this data has been extrapolated and applied to patients with bicuspid aortic valves as well.  While there are no hard and fast rules, I would personally keep all patients with a bicuspid aortic valve and an enlarged aortic root on beta-blockers for life.  This reduces the blood pressure and amount of stress placed on the wall of the aorta, and this is how it is thought to reduce growth of the aneurysm.  For this reason, patients with a dilated aortic root and/or ascending aorta are advised to restrict their activity to moderate aerobic exercise (no training for marathons or that sort of thing) and no isometric exercises.  That's primarily heavy weight lifting, but really includes any activities where you Valsalva (straining, such as when you're constipated), so stomach crunches are sort of on the borderline of what would be recommended.\n\nTwo last thing about bicuspid aortic valves... there is a strong familial tendency, so most cardiologists would screen siblings of patients with a bicuspid aortic valve as well.  Also, as one of the previous doctors recommended, you should have a prescription to take antibiotic prophylaxis before dental procedures to prevent infection of the valve.  By the same token, you should make sure you get regular dental care because poor dental health increases your risk as well.\n\nNow regarding the shortness of breath and che
845149
First off, a murmur is simply turbulent blood flow and sounds like a 'whoosh'. The lub and the dub are valves closing, first the atrio-ventricular valves and then the aortic and pulmonary.\n\nBroadly speaking, there are two kinds of murmur; systolic and diastolic. A systolic murmur, when the ventricles are contracting, is a murmur between the lub and the dub, and can be aortic or pulmonary stenosis or mitral or bicuspid regurgitation. A diastolic murmur is one between the dub and the lub and can be aortic or pulmonary regurgitation or mitral or bicuspid stenosis. There can also be murmurs that occur throughout the cardiac cycle.\n\nBased on what you have described, it doesn't sound as if you have a murmur, an occasional third heart sound is suggestive of a number of other things. A diagnosis can only be made with the benefit of an ECG and maybe an echocardiogram.\n\nGood luck, hope this helps.\n\n\n\n\n\nEDIT:\n\nTo answer the follow up, I don't know, that's really beyond my knowledge. Some murmurs are harmless and are actually best left untreated. If two doctors are happy with you, I wouldn't worry too much about what someone like me says here. However, personally, I would want to be followed up by a cardiologist.
649042
its your heart beating,\nif you hear it really often it could be a sign of anemia. which is easily treated.
161364
Sorry, I just studied the heart for medical school and there is no "shaking sound".  There are four heart sounds (S1, S2, S3 and S4) and their sounds can be altered by certain pathologic conditions.
843603
Sounds like  a blood-sugar problem
410467
Could be axiety attacks-that's about the age my daughter got them-stress related-but could be serious I was 26 when I had my first heart attack after egnoring some of the same symtoms.\nTell her to have a doctor check her out and if it's stress he can give her something to help her and you will feel better know that she is not seriously ill.
500990
see a doctor. But if you have an attack before then, I would suggest taking something like aspirin then turning out all the lights and eliminating noise as best you can.
392533
Look at this website and get to a doctor immediately!!\n\nhttp://www.heartinfo.org/hrtatkang.html
587394
skipped heartbeats are not linked to clogged arteries ,they are usually harmless and called ectopic heartbeats this could be due to the red wine or it could be due to you being run down after your strep,tiredness also causes them as does caffiene,If they are bad or dont clear up soon just get checked out .
293214
This answer really depends on your age, sex and risk factors.  If you are young <35 its probably nothing serious but could be your thyroid, panic attack or rarely a heart problem.  If you are older, obese, smoke etc it could be a sign of something more serious in the heart and should be further evaluated by a doctor.  Bottom line if you have already been evaluated by a doctor and had a normal EKG its probably nothing but if you are still nervous you can ask for an event monitor.
819676
It's probably more annoying than life-threatening.  Sometimes a compressed vertrebral disk or spinal nerve can do this.  You have not described cardiac involvement.  Please don't ask for an online diagnosis and ignore any that you are given.  I suggest you see your health care provider for evaluation.