Notes in Local Anesthetics

To Subscribe, use this Key

Status	Last Update	Fields
Published	09/28/2024	A 32-year-old woman prior to surgery is injected close to her intercostal nerve with a mixture of lidocaine and epinephrine at a ratio of 100,000:1. E…
Published	09/28/2024	The principal explanation for the higher sensitivity of small C-sympathetic-afferent neurons to lidocaine nerve block compared to A-α motor neurons is…
Published	09/28/2024	A 22-year-old college student applies a cream containing lidocaine to her legs before driving to a laser hair removal salon. Unfortunately, she does n…
Published	09/28/2024	A 25-year-old male patient with a dental abscess from a serious bacterial infection needs to have the area anesthetized with lidocaine to allow debrid…
Published	09/28/2024	A 44-year-old patient requires local anesthesia before surgery. Bupivacaine is repeatedly injected into the intercostal area. After these injections, …
Published	09/28/2024	Which statement is correct regarding the sensitivity to nerve block produced by injection of bupivacaine?A. Axons in the center of nerve bundles are b…
Published	09/28/2024	Local anesthetics produce their effects by:A. Blockade of NMDA channelsB. Inactivation of voltage-gated potassium channelsC. State-dependent blockade …
Published	09/28/2024	What is the most plausible explanation for the ability of local anesthetics to preferentially stop conduction in neurons with high firing frequency?A.…
Published	09/28/2024	Which of the following medications is used (except when injecting into distal appendages like fingers, toes, nose, ears, and the penis) to reduce the …
Published	09/28/2024	Which local anesthetic does not require epinephrine to produce vasoconstriction?A. BupivacaineB. LidocaineC. CocaineD. ProcaineE. Tetracaine{{c1::C}}
Published	09/28/2024	Which of the following is correctly ranked with respect to nerve fiber or ion channel sensitivity to blockade by lidocaine?Least sensitive: Most sensi…
Published	09/28/2024	A 53-year-old male requires a short surgical procedure to remove a metal plate from his ankle from a previous injury. His anesthesiologist decides to …
Published	09/28/2024	A 53-year-old male requires a short surgical procedure to remove a metal plate from his ankle from a previous injury. His anesthesiologist decides to …
Published	09/28/2024	A 53-year-old male requires a short dental procedure while traveling in Europe. He is given a local anesthetic before the procedure. Shortly after adm…
Published	09/28/2024	Which of the following is a sodium channel blocker used for very short procedures in combination with epinephrine because of its short duration of act…
Published	09/29/2024	Esters are rapidly hydrolyzed by a {{c1::cholinesterase}} in blood.Amides are hydrolyzed (slower) by {{c2::cyt. P450}} in liver.
Status	Last Update	Fields