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Myasthenia gravis is a recollective - terminus autoimmune disease and it lash out the neuromuscular functions of body that leads to weakness of haggard muscles . The muscles that are mostly affected are the sinew of the eyes . This disease occurs suddenly most of the times . Some patients may also develop thymoma where the thymus gland enlarges . Initially , the main symptom of the disease is weakness of the skeletal muscles and it is painless . Fatigueis generally absent at the beginning of the line of disease . The brawniness show impuissance on doing strong-arm natural process and the weakness tends to diminish as the patient role takes residual and slim the powerful activity.(1 )
Can You Donate Blood With Myasthenia Gravis?
Myasthenia gravis is an autoimmune disease where the immune system of body produces antibody against acetylcholine receptor ( AChR ) . Acetylcholine receptors are present at the boldness conclusion and help in transmission of nerve impulses to the muscle . When the antibody are produced , they attach to these acetylcholine sensory receptor and hence the transmission of nerve impulses is blocked . Due to this blockage of cheek impulse transmittal , there is weakness and fatigue duty of the muscles and unconventional functioning of muscles .
Actually the patients with myasthenia gravis are not allowed to donate blood . agree to the policy of the American Red Cross for blood donation , mass who endure from autoimmune diseases along with myasthenia gravis and other disease are not allowed to donate profligate .
An experiment was done where an animal was injected with the antibodies against acetylcholine sense organ ( AChR ) and due this the animal was constitute to be stand from myasthenia gravis . So , this shows that myasthenia gravis can be transmitted through blood blood transfusion in creature , although there is no evidence that the same matter materialise in humans too . There is no grounds yet that says that people who meet the origin of patient with myasthenia gravis were incur to have the disease send . But on the other hand there is no strong report that suggest that blood transfusion of lineage of a patient role with myasthenia gravis to a healthy somebody is totally harmless .
Another aspect of the reason why people with myasthenia gravis are not allow to donate line is that , after pedigree transfusion , the affected role becomes very weak because of loss of blood bulk from the body . People with myasthenia gravis feel fatigued as it is and due to rake donation , the weakness increases and this might contribute to serious complications .
Even though people with myasthenia gravis are not countenance to make a blood donation , they are however allowed to donate small quantity of their bloodline for inquiry purposes.(2 )
How Is Myasthenia Gravis Diagnosed?
Physical Examination- The Doctor of the Church checks the activity of muscles by asking the patient to do certain repetitious movement .
For model , there is a test where patient ’s one eye is declare open and this will lead to automatic closing of other eye of the patient role , this is called “ drapery augury ” . If the test is positively charged , it point towards possibility of myasthenia gravis .
Blood Tests- serologic tests are do to diagnose myasthenia gravis gravis and they are-
Checking for antibody against acetylcholine receptor , it has 80 - 90 % sensitivity
Also , antibodies against musculus specific kinase ( MuSK ) protein are also check because some patient may not possess antibodies against acetylcholine receptors .
Edrophonium Test ( Also Known As Tensilon Test)- In this test , neostigmine or Edrophonium chloride ( these drugs act as acetylcholinesterase inhibitor thereby , preventing dislocation of acetylcholine ) is shoot intravenously . After inject these drugs if the patient has myasthenia gravis , he will experience sudden advance of muscle strength and will be able to execute actions befittingly . On the other bridge player if there is no improvement of the muscle forcefulness ; it means that the person has some other disease exclude myasthenia gravis .
Electrodiagnostics- A method acting yell electromyography is used . In this psychometric test , a acerate leaf electrode is used to trigger the sinew fiber and record the natural process potential . If a jitter is construe then the psychometric test is confident . Jitters are said to be present if the action potentials show abnormal variations . If blocking is present , even then it the test is said to be positive . Blocking is when there is no induction of action potential difference in the muscle fiber.(3 )
Conclusion
According to the policies of the American Red Cross , it is not grant to donate line of descent for the affected role who have myasthenia gravis . There is no evidence that myasthenia gravis have been transmitted to a tidy someone who receive blood from a diseased person . But the main understanding because of which blood donation is quash in patients with myasthenia gravis is because such patients already experience muscle fatigue and failing and afterblood donationthe impuissance and tiredness aggravate due to red ink of blood intensity from the body . So , blood transfusion is better avoid in patient who abide from myasthenia gravis .
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