also spelled haematology, is the branch of internal medicine, physiology, pathology, clinical laboratory work, and pediatrics that is concerned with the study of blood, the blood-forming organs, and blood diseases. Hematology includes the study of etiology, diagnosis, treatment, prognosis, and prevention of blood diseases. The laboratology work that goes into the study of blood is frequently performed by a medical technologist. Hematologists physicians also very frequently do further study in oncology - the medical treatment of cancer.
Doctors order basic blood chemistry tests to assess a wide range of conditions and the function of organs.
Often, blood tests check electrolytes, the minerals that help keep the body's fluid levels in balance, and are necessary to help the muscles, heart, and other organs work properly. To assess kidney function and blood sugar, blood tests measure other substances.
The analysis of the properties and effects of serums (blood, semen, saliva, sweat, or fecal matter) is called serology. We'll concentrate here on the principal tests used to identify blood. According to Henry C. Lee, a forensics expert who has assisted law enforcement in over 6,000 major criminal investigations—including that of O. J. Simpson---blood evidence is found most often in "crimes of violence such as homicide, assault, and sexual assault." It may be in the form of fresh liquid, coagulated, dried, or as a small drop or stain, and each form involves a different method of preservation and collection.
We all have about ten pints of blood getting pumped throughout our bodies. When wounded, bodies leak or spray blood, and the behavior of blood in flight tends to be unaffected by such things as temperature, humidity, or atmospheric pressure. In other words, it's uniform.
Despite how well the crime scene may get cleaned up, even the finest trace of blood can often be detected and further tested. It is often the case that while the perpetrator may scrub down the obvious places, he can still miss between floorboards, under pipes, and inside drains. Merely by pouring water on some tiles at a murder scene and pulling them up wherever the water flowed beneath them, one detective found the only existing trace of the crime--blood. His discovery so surprised the killer, who felt certain he'd done a through job of cleaning up, that he instantly confessed.
The Annual Physical Exam is a form of benchmarking. It allows the doctor and patient to review all the pertinent aspects of your health history and physical exam and use the data to coordinate a care plan for you which is personalized. It is an essential part of the development and continuation of the doctor patient relationship.
Annual Physical Examination may be provided under health insurance cover, required of new insurance customers, or stipulated as a condition of employment. In the United States, physicals are also marketed to patients as a one-stop health review, avoiding the inconvenience of attending multiple appointments with different healthcare providers. Comprehensive physical exams of this type are also known as executive physicals, and typically include laboratory tests, chest x-rays, pulmonary function testing, audiograms, full body CAT scanning, EKGs, heart stress tests, vascular age tests, urinalysis, and mammograms or prostate exams depending on gender. The executive physical format was developed from the 1970s by the Mayo Clinic and is now offered by other health providers, including Johns Hopkins Universit, EliteHealth and Mount Sinai in New York City.
While elective physical exams have become more elaborate, in routine use physical exams have become less complete. This has led to editorials in medical journals about the importance of an adequate physical examination. In addition to the possibility of identifying signs of illness, it has been described as a ritual that plays a significant role in the doctor-patient relationship. Physicians at Stanford University medical school have introduced a set of 25 key physical examination skills that were felt to be useful.
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