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Preoperative fasting is the practice of a surgical patient abstaining from eating or drinking ("nothing by mouth") for some time before having an operation.This is intended to prevent stomach contents from getting into the windpipe and lungs (known as a pulmonary aspiration) while the patient is under general anesthesia. [1]
Of operative risk factors, surgical site is the most important predictor of risk for PPCs (aortic, thoracic, and upper abdominal surgeries being the highest-risk procedures, even in healthy patients. [16] The value of preoperative testing, such as spirometry, to estimate pulmonary risk is of controversial value and is debated in medical literature.
At some point before surgery a health care provider conducts a preoperative assessment to verify that a person is fit and ready for the surgery. [1] [2] For surgeries in which a person receives either general or local anesthesia, this assessment may be done either by a doctor or a nurse trained to do the assessment. [2]
The group has received anecdotal reports from across the country that patients taking the drugs may be at increased risk of vomiting and aspirating food into the lungs and airways during general ...
General anesthesia is usually considered safe; however, there are reported cases of patients with distortion of taste and/or smell due to local anesthetics, stroke, nerve damage, or as a side effect of general anesthesia. [46] [47] At the end of surgery, administration of anaesthetic agents is discontinued.
Effects are seen within 2–5 minutes, and last 30–60 minutes. [7] [3] Its main effect is anxiolysis, helping to reduce feelings of anxiety, and amnestic effects, helping the patient to forget memories associated with the procedure. It provides no analgesia, so it was commonly used with fentanyl for effective PSA prior to propofol and etomidate.
Think about the healthy life years you gain just from minimizing these risks, considering lung cancer and heart disease are by far the leading causes of premature deaths among men and women in the US.
Although complications during anesthesia are rare, potentially life-threatening consequences may occur if an anaphylactic reaction develops. The severity of the reaction whilst under anesthesia is because the anesthetist is only made aware of the allergy when it is severe enough to compromise the cardiovascular system and the respiratory system.