Anesthesia Escapes

10/16/2026

How Lipid Rescue Works + Practical Takeaways
🧪 How does lipid emulsion rescue a patient from LAST?
The leading explanation is the “lipid shuttle” concept. The lipid phase binds lipophilic local anesthetic molecules—especially agents such as bupivacaine—and helps redistribute drug away from highly vulnerable tissues such as the heart and brain.
But lipid therapy may do more than simply sequester drug. Proposed mechanisms also include improved myocardial energy delivery, positive inotropic effects, mitigation of mitochondrial dysfunction, and restoration of cellular metabolism.
The practical lesson is even simpler: know where the lipid is before you perform the block.
Know your LAST kit. Know your cognitive aid. Know your rescue dose. Continue appropriate monitoring after local anesthetic administration because toxicity can be delayed.
📚 Sources: Lee & Sohn, Korean Journal of Anesthesiology, 2023; Ok et al., Human & Experimental Toxicology, 2022; Kaenphukhieo et al., Clinical Toxicology, 2025.
🔗 anesthesiaescapes.com

10/14/2026

LAST & ACLS — Modify the Code
🚨 Cardiac arrest from LAST is not routine ACLS.
Local anesthetic toxicity changes several important aspects of cardiovascular resuscitation.
Current guidance favors smaller epinephrine doses, while avoiding medications that may worsen myocardial dysfunction or interfere with successful resuscitation—including vasopressin, beta-blockers, calcium-channel blockers, and additional local anesthetics such as lidocaine.
Lipid emulsion therapy should continue while aggressive airway management and cardiovascular support are provided. In refractory cardiogenic shock or arrest, early consideration of VA-ECMO or cardiopulmonary bypass may be lifesaving where available.
One more pearl: don’t give up early. LAST is potentially reversible, and prolonged resuscitation may be warranted.
📚 Sources: Lavonas et al., Circulation, 2023; Cao et al., Circulation, 2025; ASRA LAST guidance.
🔗 anesthesiaescapes.com

10/12/2026

20% Lipid Emulsion Rescue — Know the Dose
🧠 This is one emergency dose worth knowing before you need it.
For serious Local Anesthetic Systemic Toxicity, 20% lipid emulsion is a cornerstone of resuscitation.
A commonly taught weight-based approach includes a 1.5 mL/kg initial bolus, followed by an infusion of approximately 0.25 mL/kg/min. If cardiovascular instability persists, additional bolus therapy and an increased infusion rate may be required.
Continue lipid therapy after cardiovascular stability is restored and respect the recommended maximum cumulative dose.
And one critical distinction: propofol is NOT a substitute for lipid rescue.
Keep the ASRA LAST checklist immediately available rather than relying on memory alone during a crisis.
📚 Sources: ASRA LAST Checklist; Lee & Sohn, Korean Journal of Anesthesiology, 2023; Waldinger et al., Drugs & Aging, 2020.
⚕️ Follow your institutional protocol and current resuscitation guidance.
🔗 anesthesiaescapes.com

10/09/2026

LAST Immediate Management — Airway, Benzodiazepine, Lipid Early
⚠️ Suspect LAST? Move quickly.
The priorities are straightforward: call for help, secure oxygenation and ventilation, control seizures, and get 20% lipid emulsion to the bedside.
Give 100% oxygen and avoid hypoventilation because hypoxemia and acidemia can amplify local anesthetic toxicity. Benzodiazepines are preferred for seizure control. Large doses of propofol should be avoided when significant cardiovascular instability is present.
Most importantly: serious LAST is an indication to begin lipid emulsion therapy early—don’t wait for cardiac arrest.
Every anesthesia location using local anesthetics should have a readily accessible LAST kit and cognitive aid.
📚 Sources: Lavonas et al., Circulation, 2023; Waldinger et al., Drugs & Aging, 2020; ASRA LAST guidance.
🔗 anesthesiaescapes.com

10/07/2026

LAST Prevention — Prevention Starts Before Injection
💉 The best LAST rescue is preventing LAST in the first place.
Bupivacaine carries particularly high cardiotoxic potential because of its strong and prolonged interaction with cardiac sodium channels. Prevention begins before the needle ever enters the patient.
Use the lowest effective local anesthetic dose, calculate the total dose carefully, aspirate before injection, inject incrementally, use ultrasound when appropriate, and account for patient-specific factors that may increase toxicity risk.
And remember: hypoxia and acidemia can worsen LAST.
A simple habit worth considering during the procedural time-out: say the planned local anesthetic, concentration, volume, and total milligram dose out loud.
📚 Sources: Cao et al., Circulation, 2025; Lavonas et al., Circulation, 2023; Gitman et al., Plastic and Reconstructive Surgery, 2019.
🔗 anesthesiaescapes.com

10/05/2026

1. LAST Recognition — Think LAST Early
🚨 Anesthesia Clinical Pearl: Local Anesthetic Systemic Toxicity
When neurologic or cardiovascular changes occur around the time of local anesthetic administration, LAST should be on the differential immediately.
CNS symptoms are often the first clue—agitation, perioral numbness, tinnitus, confusion, dysarthria, seizures, or decreased consciousness. Severe toxicity can progress to bradycardia, conduction disturbances, ventricular arrhythmias, hypotension, and cardiovascular collapse.
One of the most important pearls: LAST does not always happen immediately. Delayed presentations can occur after block completion, especially after larger-volume injections or tissue deposition.
Know the signs. Keep monitoring. Be prepared to act.
📚 Sources: Lavonas et al., Circulation, 2023; Cao et al., Circulation, 2025; Gitman et al., Plastic and Reconstructive Surgery, 2019.
🔗 anesthesiaescapes.com

09/22/2026

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08/07/2026

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07/31/2026

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07/04/2026

Freedom. Family. Opportunity. Adventure. 🇺🇸
For 250 years, America has been built by people willing to dream bigger, work harder, serve others, and push forward. This Fourth of July, we celebrate the freedom that allows us to learn, travel, build businesses, care for patients, and create a life worth living.
At Anesthesia Escapes, we believe continuing education should fit into that life — not take away from it.
Earn your CRNA CE on your schedule.
Use your CE allowance wisely.
Spend more time where you actually want to be.
This Independence Day, celebrate freedom — then plan your next escape.
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Happy 4th of July from Anesthesia Escapes. 🇺🇸

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