单选题Bleeding from a vein is（）.Adark red and has a steady flowBbright red and slowCbright red and spurtingDdark red and spurting
单选题
Bleeding from a vein is（）.
A
dark red and has a steady flow
B
bright red and slow
C
bright red and spurting
D
dark red and spurting
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共用题干第一篇Sprained（扭伤）AnkleOne of the most common injuries teenagers and adults experience is a sprained ankle.A sprain occurs when the ligaments（韧带）of a joint are twisted（扭伤）and possibly torn. Ligaments are bands of fibers that hold the bones of a joint in position.A sprain can occur from a sudden twisting at the joint,or a stretching or tearing of the fibers of the ligaments. The injured area usually swells（肿胀）and becomes black and blue. Stepping off the sidewalk at the wrong angle or having one foot land in a hole while walking or running can leave you rolling on the ground in pain with an ankle on fire!If you cannot walk without experiencing intense pain,you must seek medical help.If the pain is manageable,and you can walk,here are three words to help you remember how to treat yourself:●Elevate（抬高）●Cool●Bandage（打绷带）As soon as there is injury to that ligament,there will be a certain amount of bleeding under the skin. Once the blood pools around the damaged blood vessels,swelling occurs.The pressure from the swelling results in additional stress and tenderness to the region.In order to reduce the degree of swelling,lie down as soon as possible and keep the ankle elevated so that it is actually higher than your heart.Next,to reduce blood distribution and keep bleeding（流血）to a minimum, apply a cold pack. After 20 minutes, take the pack off,wait half an hour and then reapply.This can be done several times a day for a total of three days.Never leave a cold pack on for more than 20 minutes at a time.Reducing the temperature in that area for an extended period of time signals the body to increase blood flow to raise the body temperature!Therefore, one accidentally triggers（引起）more blood distribution to the affected area by leaving a cold pack on for too long!Finally,bandage the ankle.Be careful not to wind it too tightly;doing so can restrict blood flow and cause harm to the entire foot.The black-and-blue symptom of a sprain is due to________.A:pressing one's ankleB:a tight bandageC:applying a cold packD:bleeding under the skin
共用题干Spare a Kidney?It is no longer unusual for a spouse or relative to donate a kidney to a loved one,but the number of Americans who have given a kidney to a friend,a co-worker or even a complete stranger has risen sharply from 68 in 1994 to 176 in 1998.There are many reasons.First,it's possible to live a normal life with only one kidney.(The remaining kidney enlarges to make up most of the difference.)In addition a kidney from a live donor lasts longer than a kidney taken from someone who has died suddenly.But the biggest change in the past few years is that transplant surgeons have started using laparoscopic techniques to remove the donor kidney through a much smaller incision,and this can cut recovery time for the donor from six weeks to four weeks.Just because you do something,however,it doesn't mean you should.Donating a kidney means undergoing an operation that carries some risk.You could argue that you may be helping to save a life,but you certainly can't pretend that you're better off with one kidney instead of two.So,what are the risks?“As with any major operation,there is a chance of dying,of reoperation due to bleeding,of infection,of vein clots in the legs or a hernia at the incision,”says Dr.Arthur Matas,director of the renal-transplant program at the university of Minnesota Medical Center in Minneapolis.Even laparoscopy,a relatively new technique for kidneydonation,is not risk-free.Doctors estimate that chances of dying from the procedure are about 3 in 10,000.There's no money to be made;selling an organ is illegal.But the recipient's insurance normally covers your operation and immediate aftercare.Your costs can include hotel bills, lost pay during recovery or possible future disability.Although transplant centers must evaluate any potential donor's suitability,it never hurts to have an independent opinion.The most common contraindications are heart disease, diabetes and high blood pressure.Never let anyone,not even a close relative,pressure you into giving up an organno matter if you're healthy.“There's often the feeling that you're not a good friend,father, mother if you don't do this,” says Arthus Caplan, director of the University of Pennsylvania's center for Bioethics.Certain transplant centers will invent a“medical prob- lem”on behalf of those who are reluctant to donate but feel they can't say no.From 1994 to 1998 the number of Americans who had donated a kidney reached 244.A:RightB:WrongC:Not mentioned
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单选题A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next?（）AApply a tourniquet to prevent the bleeding from restartingBApply a pressure bandage over the dressingCRemove any small foreign matter and apply antisepticDAdminister fluids to assist the body in replacing the lost blood
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单选题Bleeding from a vein may be ordinarily controlled by（）.Aapplying direct pressure to the woundBheavy application of a disinfectantCpouring ice water directly onto the woundDpinching the wound closed