The "medical standard of care" is typically defined as the level and type of care that a reasonably competent and skilled health care professional, with a similar background and in the same medical community, would have provided under the circumstances that led to the alleged malpractice.
Answer:

The exposure may be risk factor.
Explanation:
Given

Required
The odd ratio
First, we calculate the odds of exposure using:

For cases, we have:


For controls, we have:


So, the odds' ratio is:



Conclusion about the odds' ratio
The calculated ratio is greater than (and also far from) 1.
This implies that there is a greater exposure than the controls.
So, we can conclude that the exposure may be risk factor.
The health care provider suspects the child has developed: Acute post infectious glomerulonephritis.
Acute poststreptococcal glomerulonephritis (APSGN) shows symptoms like infection of the skin or throat and caused by nephritogenic strains of group A beta-hemolytic streptococci. Poststreptococcal glomerulonephritis (GN) is a kidney disease that occurs after infection with certain strains of streptococcal bacteria. The kidneys are responsible for removing waste from the body, regulating electrolyte balance and blood pressure, and stimulating the production of red blood cells. A child is recovering from a bout with group A beta-hemolytic Streptococcus infection. The child returns to the clinic a week later complaining of decrease in urine output with puffiness and edema noted in the face and hands. So these are the symptoms of Acute post infectious glomerulonephritis.
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Answer: An MRI uses powerful radio waves and magnets to create a detailed view of the brain. This test may be used after the person's condition stabilizes, or if symptoms don't improve soon after the injury.