Team challenge Flashcards
What drug is thiopental
Barbiturate
Local anesthetics work at the internal or external membrane of the sodium channel?
Internal
Thiopental is a strong base or strong acid
Strong acid (barbituric acid)
Which intravenous anesthetic also has a protective effect against post-operative nausea and vomiting?
Propofol (anti-emetic properties)
Unconsciousness produced by inhaled anesthetics is reversible or non-reversible?
Reversible
Ketamine is most like what drug?
PCP
What is the treatment for local anesthetic toxicity?
Intralipid
Ture or false, local anesthetics do NOT block sympathetic nerves?
False, act on all nerves
What is the effect of inhaled anesthetics on EEG
Flatten EEG
What disease is associated with inhaled anesthetics that results in increased temperature and results in death?
Malignant hyperthermia
Which inhaled anesthetics is least soluble in blood: isoflurane, desflurane, sevoflurane?
Desflurane: rapid onset and offset
Which intravenous anesthetic results in more deaths at pearl harbor than the actual attack? When induced in soldiers that were hypovolemic, soldiers will die in sleep
Thiopental
Emergence from inhaled anesthetics depends on which, elimination or metabolism?
Elimination. Inhaled anesthetics DON’t undergo metabolism!!
Which local anesthetic has more rapid onset: bupivacaine (pKA 8.1), lidocaine (pKA 7.9)
Lidocaine: closer to body pKa assodicated with faster onset
Which induction agent is contraindicated in egg allergy?
Propofol
Which IV anesthetic has minimal effects on the cardiovascular system?
Etomidate - profound hemodynamic stability
Which of the following drugs is the mechanism of action clear? IV, inhaled, or local anesthetics?
Local anesthetics
Rapid induction of anesthesia is done with an inhaled or IV anesthetic?
IV anesthetic
Maintenance of anesthesia occurs with an inhaled or IV anesthetic?
Inhaled anesthetic
What hair color increases MAC?
Red hair (also resistant to inhaled anesthetic)
What is the effect of inhaled anesthetic on minute ventilation?
Goes down - increased respiration can’t compensate for decrease in tidal volume
For inhaled anesthetics, speed of onset is determined by which property?
Blood solubility
What gas is typically administered for analgesia?
Nitrous oxide
What is the effect of inhaled anesthetics on uterine tone?
Decreases uterine tone (increase bleeding)
What does the injection if IV opioids due to MAC?
Decrease MAC - don’t need as much inhaled anesthetics
What do the inhaled anesthetics due to ventilatory response to low blood oxygen?
Decreases - areflexia (also to bronchomotor tone)
What do the inhaled anesthetics due to bronchiolar tone?
Bronchodilates
What do the inhaled agents do to cerebral blood flow?
Increase cerebral blood flow - don’t use for patients with ICP
The inhaled agents are supplied from the manufacturer in what form?
Liquid and then converted to a vapor
What class of drugs are the inhaled anesthetics?
All ethers (C-O-C configuration)
For the termination of a drug effect, which is more important: redistribution or elimination?
Redistribution
What drug is contraindicated with acute intermittent porphyria?
Thiopental (IV anesthetic)
What does propofol due to cerebral blood flow?
Decrease cerebral blood flow
What is the amount of IV anesthetic to prevent awareness?
Don’t know! inhaled anesthetics have MAC
Which IV anesthetic can also be given IM?
Ketamine
In addition to potassium chloride and panchorinium, which anesthetic is used for lethal injection?
Thiopental
Thiopental causes hypotension by myocardial depression and …?
vasodilation
The term for the longer you infuse a drug, the longer it takes to eliminate
Context-sensitive half life
The term for how drugs get to the effect site
Pharmacokinetics
The term for the drug effect due to receptor binding
Pharmacodynamics
What is the most common cause of abuse (death) in anesthesiologist <35?
Substsance abuse
Give an example in which EMLA would be used?
Lumbar puncture in pediatric patients: lidocaine and prilocaine
What local anesthetic is also used as an anti-arrhythmic?
Lidocaine
Which of the following OTC drug contains a local anesthetic?
Bactine - anti-septic and lidocaine
What medication is added to a local anesthetic to prolong duration of blockage?
Epinephrine
When a certain area receives local anesthetic and does not respond to local stimuli, this is called?
Regional anesthesia
What property of local anesthetic influences its duration?
Speed of onset and lipid solubility
What protein channel do local anesthetics work?
Sodium channel
What stereoisomer of bupivacaine is more cardiotoxic?
R-form
Which year was the first medical school established in the US?
Penn! 1765
What type of local anesthetic is cocaine?
Ester
Inhaled anesthetic has been linked to which disease in adults?
Alzheimer’s
The population variants of inhaled anesthetics are large or small?
Small! also works in different species
Induction of anesthesia begins at the beginning or end of anesthesia?
Beginning
The concentration of inhaled anesthetics necessary to prevent awareness is higher or lower than the amount needed to prevent pain?
Less (MAC)
Which inhaled anesthetic has the highest MAC?
Desflurane (less lipid soluble, faster offset/onset)
Why is propofol used for sedation in the ICU?
Anti-nausea, quickly reversed
Which induction agent is also metabolized in the lung and small intestine?
Propofol
Which anesthetic was first used for surgery?
Cocaine
Which local anesthetic is more rapidly metabolized if injected by IV? Chloroprocaine or bupivacaine?
Chloroprocaine! Esters are much more rapidly metabolized
Which organ metabolizes amide local anesthetic?
Liver
Is there an antagonist to the inhaled anesthetics?
No, just blow it off
Which depends on a drug metabolism: distribution half-life or elimination half-life?
Elimination half-life
Propofol potentiates the effects of which neurotransmitters
GABA
Primary termination of clinically effective IV anesthetics is metabolism or redistribution?
Redistribution
Local anesthetics bind to which configuration of the sodium channel
Open & Inactive state
The aromatic ring on the local anesthetic is hydrophilic or lipophilic?
Lipophilic
Which local anesthetic has the larger potential for allergic reaction? Lidocaine or tetrocaine?
Tetrocaine - Ester –> PABA
Which IV anesthetic does not depress respiration?
Ketamine
Which will achieve a peak level first, inhaled or IV?
IV - that’s what you use for induction
Inhaled anesthetics have been linked to the progression of which disease in kids?
Developmental delay or learning disability
In the resting state, the sodium channel is in which configuration?
Closed
What is the first sign of local anesthetic toxicity from lidocaine? Numbness of the tongue, seizure, ventricular tachycardia?
Numbness in the tongue, often metallic taste
Which local anesthetic causes vasoconstriction?
Cocaine: reason why they use it for topical anesthetics
Inhaled anesthetics with low blood solubility will have a slow or fast onset of action?
Fast onset: lower blood solubility, the faster onset. More soluble has slower onset.
Which IV anesthetic would be good to induce for a patient that is scheduled to go home?
Propofol
When the ENTIRE body does not respond to anesthesia, this is called:
General anesthesia
What is the breakdown product of local anesthetics?
PABA
Which IV anesthetic increases ICP?
Ketamine - stimulates blood flow (don’t use for trauma patients)
What is the primary organ for metabolism of IV anesthetics?
Liver
Do the inhaled anesthetics provide analgesia?
Yes
What do local anesthetics bind to in the blood?
Albumin and alpha-1-glycoprotein
What is the effect of inhaled anesthetics on blood pressure?
Decreases
Which IV anesthetics increase ICP and cerebral blood flow
Ketamine
Local anesthetics are weak acids or bases?
Bases
The pka determines what of a local anesthetic?
Speed of onset
Name one of the two intermediate chains of local anesthetics:
Amides or esters
What is the term for concentration of vapor that prevents movements in response to 50% of the population?
MAC
Which term describes an unaware patient that does not respond to pain?
Anesthesia
Which of the following organs has the greatest uptake of anesthesia following accident IV injections: stomach, brain, muscle, skin?
Brain
Which IV anesthetic has analgesic properties?
Ketamine
What determines speed of onsets of the inhaled anesthetic?
Blood solubility
What is the effect of inhaled anesthetics on temperature?
Decreases temperature
What property of a loca anesthetic influences potency?
Lipid solubility
Which anesthetic causes adrenocortical suppression?
Etomidate
What enzyme hydrolyzes local anesthetics?
Pseudocholinesterase
Antihistamines have sedative and hypnotic effects, true or false?
True