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.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
The human birth process as an example of positive feedback.
A true albino squirrel. Note the pink eyes.
Artist's conception of the birth of a star within a dense molecular cloud.
Erythroblastosis fetalis. (a) The condition occurs with an RH+ father and RH– mother. (b) First preg