shows only definitions of Science & Medicine (show all 61 definitions) medterms Medical Dictionary A-Z List / RV (rotavirus) definition Residual volume (RV) is the amount of air that remains in a person`s lungs after a maximum exhalation. nothing by mouth Latin abbreviation for «nothing by mouth». Preoperative fasting? No, you should not drink coffee (or water – or beverages of any kind) after the specified cut-off time has expired. This is because the drugs used in general anesthesia allow stomach contents to easily grow into the esophagus, where they can be inhaled. What is being done to prevent corneal abrasions? Corneal abrasions can usually be prevented by careful eye protection. Small pieces of tape are often used to keep the eyelids completely closed during anesthesia. This has been shown to reduce the likelihood of corneal abrasion. Residual volume is the amount of air that remains in a person`s lungs after full exhalation. Doctors use tests to measure a person`s residual air volume to check how well the lungs are working.
This test measures the total amount of air the lungs can absorb (total lung volume). Rotavirus was discovered in 1973 and got its name from its wheel appearance (rota means wheel in Latin). :Camper. RV. Abbreviation. Definition of VR (input 2 of 2) revised version. RV (rotavirus): RV is short for rotavirus, a major cause of severe winter diarrhea in young children. There are currently two rotavirus vaccines available in the United States. Within 24 hours of any surgery involving anesthesia, you should avoid fiber-rich foods of all kinds, including fruits, vegetables, legumes, nuts, and whole grains. In the two weeks before surgery, you should avoid eating fish or taking fish oil or omega-3 supplements. It is not uncommon for the NPO period for food to be longer than that for liquids, as the American Board of Anesthesiology advises against periods of liquid NPO longer than eight hours. While foods, especially foods high in fat or protein, can take up to 8 hours to leave your stomach, studies have shown that clear liquids like coffee, water, or pulpless orange juice are eliminated from your stomach within two hours or faster.
Therefore, clear liquids can be safely consumed up to two hours before surgery. In both 19 cases, the American Society of Anesthesiologists published NPO guidelines that allowed the consumption of clear fluids up to two hours before surgery for all healthy patients undergoing elective procedures requiring general anesthesia, regional anesthesia, or sedation/analgesia.