HESI A2
HESI A2 Reading Comprehension 2024 Questions
Extract:
According to the Centers for Disease Control and Prevention (CDC), tickborne diseases doubled in the United States between the years 2004 and 2016. Lyme disease, in particular, is difficult to diagnose due to its disparate symptoms that mimic other diseases, making it greatly underreported. As a result, the prevalence of Lyme disease is thought to be even higher than the CDC suggests.
Lyme disease is caused by the bacterium Borrelia burgdorferi, which is spread through a relationship involving three animals. This relationship starts with the white-footed mouse (or in California, the Western gray squirrel), which is prone to infection by the bacterium. Ticks in their larval form feed on the blood of these mice. If the mouse is infected, the tick becomes infected as well. After passing through a dormant phase, the tick nymph, usually the size of a poppy seed, seeks another blood meal. This meal might come from another mouse, a human, or a dog or cat.
The nymphs then molt into active adults, whose primary food source is the whitetail deer. They mate on the deer, drop off, and lay their eggs, thus starting the cycle over again. Humans can be bitten by either an infected nymph or a full-grown adult tick. For Lyme disease transmission, the tick needs to attach for about 36 hours. Unfortunately, tick bites are easy to overlook; they do not itch like mosquito bites or sting like deerfly bites. Many people go without treatment for months until a test clarifies their seemingly unrelated symptoms, which may include joint pain, a rash, fatigue, swollen glands, chills or fever, headache, or even paralysis.
If you know you have been bitten by a tick, time is of the essence. It is important to see a doctor, get tested, and receive treatment promptly.
Question 1 of 5
What is the meaning of the word disparate as used in the first paragraph?
Extract:
In California, three paint manufacturers recently settled a 19-year lawsuit for $305 million. Their crime (to which they did not admit) was marketing lead paint while knowing its toxicity. It was a surprising ending for many who believed that because the companies sold the paint prior to the government ban on its use, they could not be held liable for its harmful effects years afterward. The money will be used by municipalities to mitigate lead hazards in older homes, inspecting, evaluating, and removing paint where warranted. The funds are expected to be quickly depleted; there are thousands of such houses, and each could cost over $1,000 to remediate.
Even small amounts of lead in the body can result in serious health problems, but the symptoms are often difficult to associate with lead. In young children, lead exposure can cause brain damage leading to developmental delays, seizures, fatigue, or irritability. Adults may experience high blood pressure, muscle pain, or memory loss. Pregnant women exposed to lead over time are prone to miscarriages and stillbirths.
Although lead paint has been banned in the United States since 1978, and U.S. manufacturers stopped using lead-soldered cans in 1991, older buildings still have lead pipes, and lead may appear in bullets or batteries as well as in some pottery and toys made overseas. A major lead disaster occurred in 2015 when tests indicated dangerous lead levels in residents� water in Flint, Michigan. In that case, lead leached from the water pipes when the state failed to treat the water with an anticorrosive agent. It took months for the city to declare a state of emergency, during which time thousands of children and adults had been poisoned.
Question 2 of 5
What is the meaning of the word leached as used in the last paragraph?
Extract:
Omega-3 fatty acids include alpha-linolenic acid (ALA), docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA). Your body needs omega-3s; they appear in the membranes that surround every cell in your body. Some people take omega-3 supplements such as cod liver oil, but with a little dietary care, you should be able to obtain adequate omega-3s from your daily nutrition. ALA is available in plant-based oils, especially flaxseed and canola oils. Some leafy greens, wheat germ, and walnuts also contain ALA. DHA and EPA occur naturally in fatty fish such as tuna, mackerel, sardines, bluefish, and salmon. Vegetarians may obtain some DHA and EPA from algal sources.
The positive effects on health of a diet rich in omega-3s are clear, although further research is needed to know exactly how omega-3s help. They seem to reduce inflammation, lower blood pressure, and reduce the buildup of plaque in the arteries, making them critical in maintaining heart health. Researchers have found that people with a high omega-3 intake seem to have fewer colon and breast cancers. Because of the fatty acids� effect on inflammation, some doctors find omega-3 supplements useful for asthma and arthritis patients.
Less clear are the effects on mental health, although there are health professionals who believe strongly that high levels of omega-3s can reduce depression, improve memory, and moderate symptoms of attention deficit hyperactive disorder. Until more research takes place, it is unwise to rely on omega-3s to cure mental health issues. However, ensuring that your diet contains ample amounts of these critical fatty acids is still a good idea.
Question 3 of 5
What is one of the author's primary purposes in writing this essay?
Question 4 of 5
What is the meaning of the word moderate as used in the last paragraph?
Extract:
HEAT EXHAUSTION:
One of the human effects of the climate crisis is that as temperatures climb, more and more people are in danger of heat exhaustion. A recent spate of triple-digit temperatures occurred in states where such temperatures are rare. Municipalities provided cooling centers, which doubtless saved some lives. Knowing the signs of heat exhaustion can help you protect yourself on the hottest of days. Left untreated, heat exhaustion may lead to heatstroke, which can be fatal.
If you are forced to be outside and active in a place where high temperatures combine with high humidity, monitor your body for unusual reactions. People with heat exhaustion may sweat heavily yet have skin that feels clammy or cold. They may have a sudden sharp headache or muscle cramps and experience dizziness when standing up, which can lead to nausea. If you notice that your heart is racing and you feel faint, stop your activity at once. Find a cool place to rest, and hydrate immediately with water or an electrolyte-fortified sports drink.
If you suddenly stop sweating entirely, become confused, or cannot drink, you need immediate medical attention. Be aware that certain medical conditions�such as obesity or any condition that requires you to take beta blockers, tranquilizers, or antipsychotics�may exacerbate your reaction to excessive heat. If your weight or medications make you susceptible to heat exhaustion, avoid all physical activity when the heat index is over 90 degrees.
Question 5 of 5
In this passage, which of these is not mentioned as a possible sign of heat exhaustion?