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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Female choice based on male appearance. Female choice based on male appearance.
Cystoscopy. In this procedure, a specialized endoscope with a rigid tube, known as a cystoscope, is Cystoscopy. In this procedure, a specialized endoscope with a rigid tube, known as a cystoscope, is
Raphael, Studies for The Alba Madonna (recto). Raphael, Studies for The Alba Madonna (recto).
Desmosomes and gap junctions, as shown in heart muscle. Desmosomes and gap junctions, as shown in heart muscle.
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Use of squid giant axons for studies of neural transmission Use of squid giant axons for studies of neural transmission
Video: Glucagon (glycogenolysis and gluconeogenesis)

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