Anesthetic Medications and Techniques

Introduction to Anesthetic Agents

The American Society of Anesthesiologists recommends the use of propofol and sevoflurane as the most commonly used medications for induction and maintenance of general anesthesia, respectively, due to their rapid onset and recovery profiles 1, 2
The use of ketamine is recommended for induction or as an adjunct, as it maintains systemic vascular resistance and provides analgesia, with a typical dose of 1-2 mg/kg for induction 3, 4
Etomidate is suggested as an alternative induction agent, particularly useful in hemodynamically unstable patients, with a dose of 0.2-0.3 mg/kg 4, 5

Sevoflurane is preferred for both induction and maintenance due to its rapid onset and offset, as well as less airway irritation, according to the American Society of Anesthesiologists 6
Desflurane is not recommended as a first choice due to its higher environmental impact, although it allows for rapid emergence, as stated by the American Society of Anesthesiologists 7, 6
Nitrous oxide is often used as an adjunct but not recommended as a primary agent due to increased risk of postoperative nausea and vomiting (PONV) and delayed bowel function, as noted by the American Society of Anesthesiologists 6, 1

Non-depolarizing agents, such as rocuronium, vecuronium, and cisatracurium, are used to facilitate intubation and provide muscle relaxation, with intermediate-acting agents being preferred, as recommended by the American Heart Association 1, 2, 5
Succinylcholine is used for rapid sequence induction but should be avoided in patients with myopathies, according to the American Society of Anesthesiologists 3

Benzodiazepines, such as midazolam, are used for premedication or as part of induction, with a dose of 0.05-0.1 mg/kg, as recommended by the European Society of Anaesthesiology 8, 5
Alpha-2 agonists, such as dexmedetomidine and clonidine, provide sedation and analgesia with opioid-sparing effects, as noted by the American Society of Anesthesiologists 1, 4

Sevoflurane is preferred over desflurane or isoflurane due to its lower environmental impact, as stated by the American Society of Anesthesiologists 7, 6
Nitrous oxide use should be minimized due to environmental concerns, according to the American Society of Anesthesiologists 6
Low fresh gas flow techniques should be employed when using inhaled anesthetics, as recommended by the American Society of Anesthesiologists 6

In pediatric patients, sevoflurane is often preferred for mask induction due to its non-pungent odor, with a higher dose required for maintenance, as noted by the American Academy of Pediatrics 8, 9
In cardiac patients, careful titration of anesthetics is required, with propofol being used cautiously due to potential hypotension, as recommended by the American Heart Association 5
In patients with airway pathology, spontaneous ventilation techniques with ketamine or sevoflurane should be considered, according to the American Society of Anesthesiologists 8, 9

Overdosing should be avoided by titrating medications carefully to avoid prolonged recovery and respiratory depression, especially in elderly or debilitated patients, as noted by the American Society of Anesthesiologists 4
Inadequate monitoring should be avoided by using appropriate monitoring, including pulse oximetry, capnography, and neuromuscular monitoring, as recommended by the American Society of Anesthesiologists 1, 4
Awareness should be considered, especially with total intravenous anesthesia (TIVA) techniques, with depth of anesthesia monitoring being recommended, according to the American Society of Anesthesiologists 6, 2
Incomplete reversal of neuromuscular blockade should be avoided by ensuring complete reversal (TOF ratio ≥0.9) before extubation, as noted by the American Society of Anesthesiologists 1