what is diastolic depolarisation?
465578
Cardiac Diastole is the period of time when the heart relaxes after contraction in preparation for refilling with circulating blood. Ventricular diastole is when the ventricles are relaxing, while atrial diastole is when the atria are relaxing. Together they are known as complete cardiac diastole.\n\nDuring ventricular diastole, the pressure in the (left and right) ventricles drops from the peak that it reaches in systole. When the pressure in the left ventricle drops to below the pressure in the left atrium, the mitral valve opens, and the left ventricle fills with blood that was accumulating in the left atrium. Likewise, when the pressure in the right ventricle drops below that in the right atrium, the tricuspid valve opens, and the right ventricle fills with blood that was accumulating in the right atrium.\n\nnever heard of the depolarisation but though, sorry!
880325
Sounds like "Holiday Heart Syndrome" to me.\n\nIt's a classic medical school scenario.  See the attached links.\n\nBTW, the guy has multiple diagnoses (CHF, Afib, ARF, Alcohol abuse and probably alcoholic cirrosis, CAD, portal hypertension due to the cirrosis, etc) and you basically list all of them in the description, but the one you seem to be looking for is the Holiday Heart.
713697
Endomyocardial fibrosis (EMF) is an idiopathic disorder of the tropical and subtropical regions of the world that is characterized by the development of restrictive cardiomyopathy. Restrictive cardiomyopathy is the least common form and occurs when the middle layer of the heart cavity wall - the myocardium - is excessively rigid, impairing the filling of the ventricles with blood between heartbeats. \nPlease see Google search for more details on Endomyocardial fibrosis.
43852
You are refering to cardiac arrhythmias.  The heart beats too fast or too slowly with a consequence of diminished stroke volume or inadequate circulation of fully oxygenated blood.  This can produce dizziness, weakness and in worse cases fainting.\n\nThere are various causes.  Age or infections can cause wearing out of nerves that control the beating of the heart muscle.  Tiny clots in blood vessels can deprive a particular area of nerve and muscle tissues of oxygen and nutrients, likewise fatty deposits in the coronary arteries.\n\nThe beat which controls the heart begins in the SA node which causes the musculature of the auricles to contract while the nerve impulse travels to the AV node in the middle of the heart.  There it pauses briefly while the blood is pushed from the auricles into the ventricles.  When the AV node passes the impulse to the nerve fibers which energize the ventricles, these muscles contract sending returning venous blood to the lungs, and freshly oxygenated blood (from the lungs) to all the tissues of the body via the arteries.\n\nIf the SA node is irritated, it may fire too fast or too slowly.  The impulse arriving at the AV node could be delayed too long there.  That is called AV block.  If blockage is severe, the ventricles may fall out of sync with the rest of the heart.\n\nMuscle needs recovery time.  If impulses arrive too fast the muscle may contract weakly.\n\nWhen one node fails, usually undamaged nerve in an area nearby takes over.  This is called an ectopic node.  \n\nWhen things are working normally, your doctor can see so on the electrocardiogram, a recording of the electrical impulses produced by the nerves in the heart.  Same thing you see above patient's bed when he is connected to a cardiac monitor.\n\nThe line has certain parts called P,Q,R,S,T. The P wave is an initial small one, the impulse traveling through the auricles.  Then it flatlines for a fraction of a second as the impulse is delayed at the AV node.  The QRS, a sharp very noticeable spike represents the nerves firing in the ventricles.  This is followed by a broader T wave an these nerves recover in preparation for another firing.\n\nLots of different things can go wrong.  Much, but not all, can be determined from the EKG.  For example, the condition of the heart valves is not shown.  The doctor must take blood pressure readings, pulse, listen to the valve sounds.\n\nIf the aortic valve dows not close properly it can cause the heart to enlarge, the person has a very high systolic blood pressure (during beat), but a very low diastolic pressure (ventricles resting).\nMight be 200 over zero according to the nurse.\n\nSince our hearts are so vital, we should not take them for granted.  Don't eat too much fatty food.\nGet your exercise to keep up your circulation and reduce clotting.  Eat healthy foods that serve to maintain your nerves.  This requires vitamins and minerals.  Too little Calcium can cause problems.  Too much or too little potassium also causes trouble.\n\nThis is only a partial explanation of a big subject for a little place.\n\nGot to stop somewhere.
363650
force exerted by the blood upon the walls of the arteries. The pressure in the arteries originates in the pumping action of the heart, and pressure waves can be felt at the wrist and at other points where arteries lie near the surface of the body (see pulse). Since the heart can pump blood into the large arteries more quickly than it can be absorbed and released by the tiny arterioles and capillaries, considerable inner pressure always exists in the arteries. The contraction of the heart (systole) causes the blood pressure to rise to its highest point, and relaxation of the heart (diastole) brings the pressure down to its lowest point.\n\nBlood pressure is strongest in the aorta, where the blood leaves the heart. It diminishes progressively in the smaller blood vessels and reaches its lowest point in the veins (see circulatory system). Blood pressure manifests itself dramatically when an artery is severed or pierced and the blood (under pressure) ejects in spurts.\n\nSince blood pressure varies in different arteries, the pressure in the brachial artery of the forearm serves as a standard. A sphygmomanometer measures blood pressure in millimeters of mercury; blood pressure gauges that do not use mercury also produce readings that are expressed in terms of millimeters of mercury. The normal blood pressure readings in young people are about 120 mm for systolic pressure and about 80 mm for diastolic pressure, commonly written as 120/80 and read as "one-twenty over eighty." With age, and the constriction of the small arteries and then the larger ones, blood pressure increases, so that at 50 years, normal individuals have a systolic pressure between 140 and 150, and a diastolic pressure of about 90.
311612
The top number is the systolic rate,the bottom number is the diastolic rate.\n\nSystolic pressure (the higher,first #) measures the force that the blood exerts on the artery walls as the heart contracts to pump the blood.\n\nDiastolic pressure (the lower second #) is the measurement of force as the heart relaxes to allow blood to flow to the heart.
663739
the heart is transported on ice to delay cellular degeneration because the cells are deprived of oxygen while out of the body
861263
It stops the heart from beating.
875214
This is not actually so.  To quote from another source:\n\n"In the past, most attention was paid to diastolic pressure; but nowadays it is recognised that both high systolic pressure and high pulse pressure (the numerical difference between systolic and diastolic pressures) are also risk factors."\n\nOr, to put it a more obvious way, if only one number was really important, why would anyone bother writing down two?  The systolic number tells you about how hard the heart works at maximum, and the diastolic can tell you about the minimum flow and the quality of your veins.  Those are both rather obviously good things to know!
279039
WPW is a pre-excitation syndrome characterized by a delta wave on an ekg. An abnormal conduction of the depolarization impulse from the atria to the ventricles. Most patients are asymptomatic but it can produce tachydysrhythmias usually through rentry. Would have nothing to do with a polygraph test.
926156
As a rule, males, their age plus 100 for the systolic, or first number. This holds good until you hit about 50, so, a good systolic is about 140 to 150.  This is the maximum pressure exerted on the artery walls during the contraction of the heart.\n\nThe diastolic, or bottom number needs to be below 90, and is best if in the low 80's to upper 70's. This is the pressure in the artery between contractions. When this number gets into the 90's, doctors begin to worry. When it goes to and above 100, well, these people are usually on BP meds long term.
93872
A diagnostic EKG is a twelve lead (a look at the heart beat from 12 different directions) or an EKG done during the duration of a cardiac stress test.  These types of EKS are a diagnostic test to determine if there is a problem and in which area in the heart the problem exists.  The stress test is used to see if stressing the heart (increasing the heart rate) will precipitate changes in the EKG or bring on syptoms.  A monitoring EKG done in the hospital is used to constantly watch the heart beat of a person who may have a problem or symptoms of a heart problem or high(er) risk for heart problems.  Of course during surgery, watching the heart and BP and respers are important vital signs for continuous monitoring.  A monitoring EKG at home is a Holter Monitoring System.   The patient has his/her heart beat monitored usually for 24-47 hours on a disk or cassett tape.  The tape or disk is put into a machine that replays the recorded heart beat from the past 24-48 hours.
171531
The extent of opening of the mitral leaflets in diastole and their degree of closure during systole are mediated either indirectly or directly through the force of left ventricular systole. Therefore measures of incomplete opening or incomplete closure both reflect left ventricular systolic function
1146904
because these are the only two measurements done with a routine manual blood pressure reading.  now if on a blood pressure monitoring machine, there is a mean or average blood pressure.  however, the basics are the top number or systolic and bottom number or diastolic.  the systolic is the heart when working or contracting; the diastolic is the heart at rest.  a high diastolic is more significant due to the fact that a hi diastolic creates more pressure in the arteries to move the blood to vital organs.
964913
PR Interval. The interval between atrial contraction and ventricular contraction. It should be between 0.16 and 0.2 seconds.\n\nQRS Complex. The 'squiggle' that denotes the electrical changes of ventricular contraction. It should be narrow, not broad, it should be of a normal shape\n\nQT Interval. The interval between depolorisation of the the ventricles and repolorisation of the ventricles. It should be between 0.3 and 0.44 seconds. QTc is the QT interval corrected for heart rate, it's not normally used all that much.\n\nTry looking at;\nhttp://www.ecglibrary.com/
272430
Cardiac enzymes should be drawn and you should have a "Stress test." Just ask your doctor.
443761
Electro-CardioGram (ECG or EKG)  A graphical representation of the electrical activity of the heart muscle and it is used to evaluate the condition of the heart's conduction system.