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Answer:
How long will it take for the steroid injection to work? A corticosteroid injection will usually take 3 to 7 days to begin to have a positive effect. It may take up to two weeks for the medicine to decrease the inflammation to a point where pain is improved.
With the application of a stimulus voltage, the isolated muscle fibre will show contraction fully after the threshold voltage is achieved. An increase in the stimulus voltage will increase the force of contraction, but the amount of contraction will remain the same.
Explanation: Muscle fibres do contain the contractie proteins like actin and myosin. With the advent of an electrical stimulus, there's a change in the intercalated discs or the T junctions of the muscle fibre which leads to the opening of calcium channels of sarcoplasmic rericulum. This increases the calcium ion concentration of the cell and the actin heads get opened which leads to the sliding movement of actin over myosin and thereby contraction occurs.
According to the All or None principle, the muscle fibre will show contraction fully, or won't show any contraction. Sl here, with increase in stimulus voltage, the contraction will be more powerful, but the extent of contraction will be same for all voltages above threshold.
A client is admitted to the hospital with an exacerbation of myasthenia gravis and the appropriate nursing actions include the following below:
- Monitor respiratory status.
- Monitor speech and swallowing abilities to prevent aspiration.
- Encourage the client to sit up when eating.
<h3>What is Myasthenia gravis?</h3>
This is referred to a rare autoimmune disorder which is characterized by a breakdown in communication between the nerves and muscles which are present in the body system.
This leads to fatigue and weakening of the muscles which are controlled voluntary thereby making it very difficult for some activities to be done due to the destruction of the neuromuscular connections.
The nurse when caring for such patient should ensure that respiratory status are monitored so as to know the right steps to take to prevent complications.
In this situation, there is difficulty in chewing which is why the patient should always sit up in other to avoid choking.
Read more about myasthenia gravis here brainly.com/question/13792132
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The answer is ‘inactivity.’
