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The first lung transplant was performed by James Hardy in 1964. A lung transplant is surgery that replaces a diseased or failing lung with a healthy donor lung. A lung transplant is considered the last option for treating lung failure. Other treatments and lifestyle changes will almost always be tried first.

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Birth control pills approved by the U.S. Food and Drug Administration. The importance of Birth Control has helped women with more than just prevention of pregnancy. It helps women with acne, bone thinning, heavy periods, severe menstrual cramps and so much more.

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The first successful kidney transplant in humans was performed by Joseph Murray in 1954. When your kidneys lose this filtering ability, harmful levels of fluid and waste accumulate in your body, which can raise your blood pressure and result in kidney failure. This is when a kidney transplant is necessary.

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Conjoined (Siamese) twins were separated successfully for the first time in 1953. Twins that are conjoined cannot do things on their own. To be able to successfully separate them has made such a difference for conjoined twins today. The opportunity to get unstuck will forever be used.

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The first heart–lung machine was used for open-heart surgery in 1953. The heart-lung machine has helped so many people and saved people's lives during surgery. The start of this is something that will always be used during open heart surgery because it is very necessary.

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Jonas Salk  developed the polio vaccine using dead polio virus in 1952. Polio vaccines are vaccines used to prevent polio. There are two types: one that uses inactivated poliovirus and is given by injection, and one that uses weakened poliovirus and is given by mouth. The World Health Organization recommends all children be fully vaccinated against polio.

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The first kidney dialysis machine was developed in 1944. When your kidneys fail, dialysis keeps your body in balance by: removing waste, salt and extra water to prevent them from building up in the body.

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Frederick Banting and Charles Best discovered and used insulin to treat diabetes in 1922.  Insulin regulates how the body uses and stores glucose and fat. Many of the body's cells rely on insulin to take glucose from the blood for energy.

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Bayer introduced aspirin in powdered form in 1899. Aspirin is a common drug that is generally used as a pain reliever for minor aches and pains, to reduce fever, and also as an anti-inflammatory drug.

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Dimitri Ivanofski discovered viruses in 1892. The discovery of viruses has also led to the treatments for viruses. It has saved millions and millions of people and changed the medical world tremendously.

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The American Red Cross was founded in 1881. The American Red Cross has helped victims of disasters, wars, and other catastrophes. The organization is important to the United States and the world.

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Joseph Lister started using disinfectants and antiseptics during surgery to prevent infection in 1865. While performing any operation, it is needed to be sanitary. There have been cases where the operating room was not clean and it caused the death of the person getting operated on. The start of using antiseptics during surgery to prevent infection has saved many and has imp[acted the world of surgery greatly.

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The start of mental illness treatment began in the 19th Century. If this had not been founded, so many people would be left without the knowing and cause of their mental illness. The start of this has given so many people help and why they are the way they are.

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So many medical discoveries were made during the 19th Century. Things that have impacted the medical world in so many ways that have helped people and continue to do so today. First successful blood transfusion was performed on humans. There are so many reasons why you made need a blood transfusion but the start of this has saved so many people's lives. If you have an injury and cannot properly make blood, you can get a blood transfusion.

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During the 18th Century, a lot of things were created and a lot of things were made that have impacted today in such a positive way. The first mercury thermometer was created. Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. The slightest change in temperature is notable when it's used in a thermometer.

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Causes of disease were still not known and many people died from infections and puerperal (childbirth) fever. Ambroise Paré, a French surgeon, known as the Father of Modern Surgery:  *Established the use of ligatures to bind arteries and stop bleeding
*Eliminated the use of boiling oil to cauterize wounds
*Improved treatment of fractures and promoted use of artificial limbs
-The start of using ligatures was the start of learning how to handle injuries and how to treat them. It wasn't the most sanitary way to do it but it got the job done. The start of selling medications has saved so many people's lives and continues to do so today.

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Dissection of the body began to allow a better understanding of anatomy and physiology. Development of the printing press allowed knowledge to be spread to others. Records and diagrams about the human body, which were written and drawn by scientists and other people who directly observed the human body, helped those who were not able to dissect to learn about anatomy of humans. This helped spread the idea of medicine, dissection, and surgery throughout the Renaissance world.
-Dissection of the human body and observing the human body has helped today's medical situations in a substantial way. The knowing of what goes on in the human body is so vitally important.

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Renewed interest in the medical practice of Greeks and Romans

Physicians began to obtain knowledge at medical universities in the 9th century.
Major diseases were smallpox, diphtheria, tuberculosis, typhoid, the plague, and malaria

Arab physicians used their knowledge of chemistry to advance pharmacology.
-The start of pharmacology was the start of cures. Physicians studied to find cures for these diseases. Since the cures have been found, diseases like those that were once so common, do not occur like they used to. This has saved so many people from death.

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First to organize medical care by providing care for injured soldiers. Early hospitals developed when physicians cared for ill people in rooms in their homes.
>Began public health and sanitation systems:
*Created aqueducts to carry clean water to the cities
*Built sewers to carry waste materials away from the cities
*Used filtering systems in public baths to prevent disease
*Drained marshes to reduce the incidence of malaria
-The Romans paid special attention to the health of their soldiers due to thought that, without them, their empire would collapse. Today, we have so many hospitals around the world. The start of them is what started the care for those who are in need of medical attention.

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Began modern medical science by observing the human body and effects of disease.
Hippocrates (460–377 bc) called the Father of Medicine:
*Recorded signs and symptoms of many diseases.
*Created a high standard of ethics, the Oath of Hippocrates, used by physicians today.
-The observation and knowing the reasons why someone may have a disease is vitally important. You have to be able to observe the body to know why someone may have disease need to know what treatment the individual needs. The start of this has helped so many.