Answer:
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
The right answer is A.myasthenia gravis
Myasthenia gravis is an autoimmune disease affecting mainly young women and the elderly and whose incidence tends to increase. It affects neuromuscular junctions. A fluctuating oculo-facio-bulbar paresis of variable severity is frequent. Remissions and exacerbations are typical. The disease is caused by autoantibodies to acetylcholine receptors or, more rarely, to a specific muscle kinase.
Complementary examinations aim to confirm the diagnosis and to look for associated pathologies (1/10 to a thymoma or an associated autoimmune disease).
Answer:
A peak expiratory flow (PEF) measurement
Explanation:
The peak expiratory flow (PEF), or peak expiratory flow rate (PEFR), is a person's maximum speed of expiration, as measured with a peak flow meter, a small, hand-held device used to monitor a person's ability to breath out air. It measures the airflow through the bronchi and thus the degree of obstruction in the airways. Peak expiratory flow is typically measured in units of liters per minute (L/min).
Measurements may be based on 1 second or less but are usually reported as a volume per minute. Electronic devices will sample the flow and multiply the same volume (Liters) by 60, divided by the sample (seconds) for a result measured in L/minute: (sample volume*60)/sample time.
Peak flow readings are often classified into 3 zones of measurement according to the American Lung Association, green, yellow, and red.
Green zone: 80 to 100 percent of the usual or normal peak flow readings are clear. A peak flow reading in the green zone indicates that the asthma is under good control.
Yellow zone: 50 to 59 percent of the usual or normal peak flow readings. Indicates caution. It may mean respiratory airways are narrowing and additional medication may be required.
Red zone: less than 50 percent of the usual or normal peak flow readings. Indicates medical emergency. Severe airway narrowing may be occurring and immediate action needs to be taken. This would usually involve contacting a doctor or hospital.
