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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.
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People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
Vasectomy. (a) Vas deferens is located within the spermatic cord on both sides. (b) A small incision
Obstetrical sonography and fetometry. (a) The procedure is performed in a clinical setting. The inst
Demonstration of the function of a balloon-tipped catheter during a PTCA procedure.
Acquiring Weather Data
Flow cytometry data that shows the differences in CD3+ CD4+ cells that occur with HIV infection. ...
Survivorship curves. Blue lines are theoretical curves. Red dots are data from field studies.