Insertion of a nasogastric tube using a modified ureteric guide wire.

摘要

In severe hypotension, IV fluids can flow freely into a major artery from a considerable height and can mislead the physician. Remember, one mmHg = 0.53 inches (1.3 cm) water column [1]. Therefore, for a systolic blood pressure (SBP) of approximately 60 mmHg, a height of three feet (90 cm) above the bed level will generate sufficient pressure for the fluid column to flow down from the hanging IV fluid bottle Fig. 1.