ACLS Drugs Cheat Sheet: A Comprehensive Overview (Updated 03/30/2026)
Today’s date is 03/30/2026 18:20:42. This resource details crucial ACLS medications like Adenosine, Epinephrine, and ACE inhibitors, vital for post-AMI care and resuscitation.
Advanced Cardiovascular Life Support (ACLS) pharmacology centers on a focused set of medications utilized during cardiac arrest or other life-threatening cardiovascular emergencies. Understanding these drugs – their mechanisms, dosages, and potential adverse effects – is paramount for effective resuscitation. This cheat sheet, updated as of March 30, 2026, provides a concise reference for healthcare professionals.
Key drug classes include vasopressors like Epinephrine and Norepinephrine, antiarrhythmics such as Amiodarone and Adenosine, and agents for specific conditions like Calcium Chloride for hyperkalemia. ACE inhibitors, including Enalapril, Captopril, Lisinopril, and Ramipril, play a crucial role post-myocardial infarction (AMI) by reducing mortality and improving left ventricular dysfunction.
Effective ACLS requires not only knowing what drugs to administer but also when and how, alongside continuous monitoring and assessment. This guide aims to streamline that process.
The Importance of a Quick Reference Guide
In the high-stress environment of a cardiac emergency, time is critically limited. A quick reference guide, like this ACLS drugs cheat sheet (updated 03/30/2026), is therefore indispensable. Cognitive load is significantly reduced when essential drug information – dosages, indications, and potential interactions – is readily available at a glance.
Hesitation or searching for information can delay crucial interventions, impacting patient outcomes. This guide consolidates vital data on medications such as Adenosine, Epinephrine, and ACE inhibitors (Enalapril, Captopril, Lisinopril, Ramipril), streamlining decision-making during resuscitation efforts.
Furthermore, a readily accessible resource reinforces protocol adherence and minimizes errors, contributing to a more standardized and effective response. It’s a vital tool for both experienced providers and those newer to ACLS.
Core ACLS Drugs & Their Uses
Essential medications include Epinephrine, Amiodarone, Adenosine, and Lidocaine, crucial for managing cardiac arrest and arrhythmias, as detailed in ACLS protocols.
Epinephrine: The Cornerstone of Resuscitation
Epinephrine is paramount in cardiac arrest, enhancing myocardial and cerebral perfusion. Administered every 3-5 minutes, it increases coronary blood flow and automacity. Dosage typically involves 1mg IV/IO, repeating as needed.
Consider an infusion of 2 to 10 mcg/min, particularly during prolonged resuscitation efforts. Epinephrine’s alpha-adrenergic effects elevate blood pressure, while beta-adrenergic stimulation boosts heart rate and contractility.
However, remember to investigate and address the underlying “Hs and Ts” – Hypovolemia, Hypoxia, Hydrogen ion (acidosis), Hypo-/Hyperkalemia, Hypothermia, Tension pneumothorax, Tamponade, Toxins, Thrombosis (pulmonary or coronary). Expert consultation is always recommended alongside medication administration.
Its use is vital, but should be integrated with comprehensive resuscitation strategies.
Amiodarone: For Refractory Arrhythmias
Amiodarone serves as a crucial antiarrhythmic for shock-refractory ventricular fibrillation (VF) or pulseless ventricular tachycardia (pVT). The initial dose is typically 150mg IV/IO, administered over 3-5 minutes, followed by a 3mg/minute infusion for the first hour.
Maintenance infusions range from 0.5mg/minute to lower, adjusted based on arrhythmia response and potential adverse effects. Amiodarone’s complex mechanism impacts multiple ion channels, prolonging the refractory period.
Caution is advised due to its potential for hypotension and prolonged QT interval. Careful monitoring of ECG and blood pressure is essential. It’s vital to remember that amiodarone isn’t a first-line drug; it’s reserved for arrhythmias unresponsive to defibrillation and other initial treatments.
Always consider expert consultation during complex arrhythmia management.
Adenosine: Diagnostic & Therapeutic Tool
Adenosine is a potent AV nodal blocking agent utilized for both diagnosing and terminating supraventricular tachycardia (SVT). The typical adult dose is 6mg IV/IO push, administered rapidly, followed by a 2-second saline flush. If initial dose is ineffective, a 12mg dose can be repeated once after 1-2 minutes.
Expect a transient period of asystole on ECG, which is normal and confirms drug action. Adenosine is contraindicated in patients with certain pre-existing conditions, like asthma or significant hypotension.
A defibrillator must be immediately available during adenosine administration. It’s crucial to note that adenosine is generally ineffective for atrial fibrillation or flutter. Dosage adjustments may be necessary, decreasing the dose for certain clinical scenarios.
Always have expert consultation available for complex cases.
Lidocaine: Alternative Antiarrhythmic
Lidocaine serves as an alternative antiarrhythmic primarily used for ventricular arrhythmias, specifically when amiodarone is unavailable or contraindicated. The initial adult dose is typically 1-1.5 mg/kg IV/IO, administered slowly over 5-10 minutes. This can be followed by a maintenance infusion of 20-50 mcg/min, titrated to effect.
Continuous ECG monitoring is essential during lidocaine administration, as it can induce proarrhythmic effects. Be cautious in patients with pre-existing heart failure or hepatic impairment, as these conditions may alter drug metabolism and increase toxicity risk.
Lidocaine’s mechanism involves sodium channel blockade, reducing myocardial excitability. Consider expert consultation when managing complex arrhythmias, and always assess the “6 Hs and 5 Ts” to identify and address underlying causes.
Managing Acute Coronary Syndromes (ACS)
ACS treatment involves Aspirin for initial platelet inhibition, Nitroglycerin for vasodilation, and potentially Heparin/Enoxaparin for crucial anticoagulation during critical events.
Aspirin: Initial Platelet Inhibition
Aspirin is a foundational element in the immediate management of Acute Coronary Syndromes (ACS), functioning as a potent antiplatelet agent. Its primary mechanism involves irreversibly inhibiting cyclooxygenase-1 (COX-1), thereby reducing the production of thromboxane A2 – a key mediator of platelet aggregation.
Administration guidelines typically involve a loading dose of 162-325 mg, chewed for faster absorption, followed by a maintenance dose of 81-162 mg daily. This swift action helps prevent further thrombus formation, mitigating the progression of myocardial infarction or unstable angina.
However, contraindications must be carefully considered, including active bleeding, known aspirin allergy, or recent gastrointestinal ulceration. Prompt recognition and appropriate administration of aspirin significantly improve patient outcomes in the acute phase of ACS, laying the groundwork for further interventions.
Nitroglycerin: Vasodilation & Pain Relief
Nitroglycerin serves as a crucial vasodilator in the management of ACS, offering both symptomatic relief and physiological benefits. It primarily works by releasing nitric oxide, leading to smooth muscle relaxation in both arteries and veins. This vasodilation reduces preload and afterload, decreasing myocardial oxygen demand and alleviating chest pain.
Standard administration protocols involve sublingual tablets (0.4 mg) repeated every 5 minutes for up to three doses, provided systolic blood pressure remains above 90 mmHg. Intravenous nitroglycerin infusions are reserved for refractory cases, requiring careful titration to avoid hypotension.
Important considerations include monitoring blood pressure closely and being aware of potential side effects like headache and reflex tachycardia. Nitroglycerin is contraindicated in patients with recent phosphodiesterase-5 inhibitor use due to the risk of severe hypotension.
Morphine: Pain Management & Venodilation
Morphine plays a vital role in alleviating chest pain associated with Acute Coronary Syndromes (ACS), offering significant analgesic effects. Beyond pain relief, morphine induces venodilation, reducing preload and subsequently decreasing myocardial oxygen demand – a crucial benefit in unstable angina or myocardial infarction.
Typical administration involves intravenous boluses of 2-4 mg, repeated at 5-15 minute intervals as needed for pain control. Careful titration is essential, monitoring for respiratory depression and hypotension.
However, morphine’s use requires caution. It can mask symptoms of worsening ischemia and potentially contribute to bradycardia. Its use should be balanced against potential risks, particularly in the presence of right ventricular infarction. Consideration of alternative analgesics is often warranted, especially given evolving guidelines.
Heparin/Enoxaparin: Anticoagulation
Heparin and Enoxaparin are cornerstone anticoagulants in managing Acute Coronary Syndromes (ACS), preventing further thrombus formation and propagation. Unfractionated Heparin (UFH) requires monitoring of activated partial thromboplastin time (aPTT), aiming for a therapeutic range to ensure efficacy and minimize bleeding risk.
Enoxaparin, a low-molecular-weight heparin (LMWH), offers more predictable anticoagulation and doesn’t typically require routine aPTT monitoring. Standard dosing for ACS involves an initial bolus followed by subcutaneous administration, adjusted based on renal function.
Both agents necessitate careful consideration of bleeding risks, particularly in patients undergoing invasive procedures or with pre-existing bleeding disorders. Reversal agents, such as protamine sulfate, are available for rapid anticoagulation reversal when necessary. Appropriate renal function assessment is paramount before and during therapy.
Advanced Cardiac Life Support Medications
Critical ACLS drugs—Atropine, Dopamine, Norepinephrine, and Calcium Chloride—address bradycardia, hypotension, and specific conditions requiring advanced interventions for stabilization.
Atropine: Bradycardia Management
Atropine sulfate is a crucial medication in Advanced Cardiac Life Support (ACLS) specifically indicated for symptomatic bradycardia. It functions as an anticholinergic, effectively blocking the action of the vagus nerve, thereby increasing the heart rate. Initial adult dosage typically begins with 0.5 mg administered intravenously (IV) every 3-5 minutes, as needed, to achieve the desired heart rate increase.
The maximum total dose should not exceed 3 mg. Healthcare professionals must be prepared for potential side effects, including dry mouth, blurred vision, and urinary retention. Atropine is most effective for vagally mediated bradycardia, but may be less effective in cases of intrinsic nodal disease or beta-blocker overdose. Continuous cardiac monitoring is essential during and after atropine administration to assess its effects and guide further interventions. Always consider alternative causes of bradycardia and consult expert guidance when necessary.
Dopamine: Inotropic Support
Dopamine serves as a vital inotropic agent in ACLS, primarily utilized to enhance myocardial contractility and cardiac output in cases of hypotension. Its effects are dose-dependent, ranging from renal vasodilation at low doses (0.5-2 mcg/kg/min) to beta-adrenergic stimulation for inotropic support (2-10 mcg/kg/min), and finally, alpha-adrenergic stimulation for vasoconstriction at higher doses (10-20 mcg/kg/min).
Administration is via continuous intravenous (IV) infusion, requiring careful titration based on the patient’s hemodynamic response. Monitoring blood pressure, heart rate, and urine output is crucial. Potential adverse effects include arrhythmias, hypertension, and peripheral vasoconstriction. Dopamine is often considered alongside epinephrine infusions (2-10 mcg/min) when managing severe hypotension. Expert consultation is always recommended to optimize dopamine therapy and address the underlying cause of hemodynamic instability.
Norepinephrine: Vasopressor for Hypotension
Norepinephrine is a potent vasopressor, frequently employed in ACLS protocols to elevate blood pressure in cases of severe hypotension, particularly during cardiogenic shock or septic shock. Unlike dopamine, norepinephrine primarily acts as an alpha-adrenergic agonist, inducing peripheral vasoconstriction and increasing systemic vascular resistance. The typical initial infusion rate ranges from 2 to 10 mcg/kg/min, administered intravenously.
Close hemodynamic monitoring—including arterial blood pressure, heart rate, and urine output—is essential during norepinephrine administration. Potential adverse effects encompass arrhythmias, decreased cardiac output due to excessive vasoconstriction, and peripheral ischemia. It’s often used when dopamine proves insufficient or when a more pronounced vasopressor effect is needed. Remember to consider the “6 Hs and 5 Ts” when addressing hypotension, and always seek expert consultation for optimal management.
Calcium Chloride: Specific Calcium Channel Blocker/Hyperkalemia
Calcium chloride is a crucial ACLS medication indicated primarily for treating calcium channel blocker overdose and managing severe hyperkalemia. It doesn’t directly lower potassium levels, but it protects the myocardium from the adverse effects of hyperkalemia by stabilizing the cardiac membrane. The standard adult dose is 1 gram administered intravenously over 2-3 minutes, with continuous ECG monitoring.
Caution is paramount during administration, as rapid infusion can cause bradycardia or even asystole. It’s vital to have a defibrillator immediately available. Calcium chloride is often used in conjunction with other hyperkalemia treatments, such as insulin and glucose, or sodium bicarbonate. Remember, it’s a temporizing measure, and definitive treatment addressing the underlying cause of hyperkalemia is essential. Always consider expert consultation.
Less Common, But Important ACLS Drugs
Magnesium Sulfate, Sodium Bicarbonate, and Activated Charcoal are vital for specific emergencies like Torsades, acidosis, or poisoning—consider these options!
Magnesium Sulfate: Torsades de Pointes & Hypomagnesemia
Magnesium Sulfate plays a critical, though less frequently utilized, role in Advanced Cardiac Life Support (ACLS). Its primary indications center around the treatment of Torsades de Pointes, a polymorphic ventricular tachycardia often associated with prolonged QT intervals. Furthermore, it’s essential in addressing confirmed or suspected hypomagnesemia, as low magnesium levels can exacerbate arrhythmias and hinder effective resuscitation efforts.
Administration typically involves a 1-2 gram IV push over 5-10 minutes, carefully monitoring the patient for potential side effects like hypotension and respiratory depression. It’s crucial to remember that magnesium is particularly effective when Torsades is related to a magnesium deficiency. Consider magnesium even if magnesium levels are normal in refractory cases.
Always assess the patient’s renal function before administration, as impaired kidney function can lead to magnesium accumulation and toxicity. Careful monitoring of vital signs and ECG is paramount throughout the infusion.
Sodium Bicarbonate: Specific Acidosis/Tricyclic Overdose
Sodium Bicarbonate is a complex ACLS medication reserved for very specific circumstances, not routine use. Its primary applications include managing severe metabolic acidosis – particularly that resulting from cardiac arrest – and mitigating the cardiotoxic effects of tricyclic antidepressant (TCA) overdose. TCAs disrupt sodium channels, and bicarbonate can help to counteract this effect, stabilizing the cardiac membrane.
Typically, a 1-2 mEq/kg IV push is administered, guided by arterial blood gas (ABG) analysis to confirm the presence of significant acidosis. However, indiscriminate use can worsen intracellular acidosis and should be approached cautiously.
Monitoring is crucial, as rapid administration can cause alkalosis and electrolyte imbalances. Consider its use alongside other interventions, and always prioritize addressing the underlying cause of the acidosis or overdose. Expert consultation is often recommended.
Activated Charcoal: Poisoning/Overdose
Activated Charcoal plays a vital role in managing certain poisonings and overdoses during ACLS protocols. It functions by adsorbing many, but not all, ingested toxins within the gastrointestinal tract, preventing their systemic absorption into the bloodstream. This is most effective when administered promptly – ideally within one hour of ingestion – before the substance has moved beyond the stomach.
The typical adult dose ranges from 25-50 grams, mixed with water to form a slurry. However, it’s contraindicated in patients with a decreased level of consciousness, unprotected airway, or ingestion of corrosives like acids or alkalis.
Considerations include potential for aspiration and the fact that it doesn’t bind all substances (e.g., iron, lithium). Always consult toxicology resources for specific poisoning guidance and assess the patient’s airway and mental status before administration.
Drug Dosage Considerations & Administration
Dosage is critical! ACLS requires precise medication administration, with adjustments for adult versus pediatric patients, and varying routes for optimal effectiveness.
Adult ACLS Drug Dosage Chart
Essential dosages for rapid reference during critical events are paramount; For Adenosine, initial doses typically begin at 6mg, potentially repeated up to 12mg if conversion doesn’t occur, ensuring a defibrillator is immediately available. Epinephrine, a cornerstone, can be administered as 1mg IV/IO every 3-5 minutes, or via infusion at 2-10 mcg/min.
Amiodarone, for refractory arrhythmias, usually starts at 150mg IV over 10-20 minutes, followed by a maintenance infusion. Lidocaine, an alternative, is given as 1-1.5mg/kg IV, potentially repeated. Furthermore, consider Dopamine infusions ranging from 2-10 mcg/kg/min, alongside Epinephrine, when addressing hemodynamic instability.
Remember, these are guidelines; individual patient factors and protocols always dictate precise dosing. Always consult updated ACLS guidelines and institutional protocols for the most accurate information.
Pediatric ACLS Drug Dosage Adjustments
Pediatric resuscitation demands precise weight-based dosing, differing significantly from adult protocols. Adenosine dosages are typically 0.1-0.2 mg/kg IV/IO (maximum single dose 6mg), potentially repeating once. Epinephrine, crucial for pediatric arrest, is administered at 0.01 mg/kg (0.1 mL/kg of 1:10,000 solution) IV/IO every 3-5 minutes.
Amiodarone, used cautiously, is given at 5mg/kg IV over 20-30 minutes, with a maximum single dose of 300mg. Lidocaine’s pediatric dose is 1-1.5mg/kg IV, potentially repeated. Careful consideration of vascular access and drug concentration is vital.
Always utilize a pediatric drug reference and weight-based dosing charts. Remember, these are guidelines; clinical judgment and updated protocols are paramount for optimal outcomes in young patients.
Routes of Administration & Considerations
ACLS drug administration prioritizes rapid effect, favoring intravenous (IV) or intraosseous (IO) routes. IV access is preferred, but IO provides a viable alternative when IV is unavailable or delayed, particularly in arrest situations. Epinephrine, adenosine, and lidocaine are commonly delivered via these routes.
Endotracheal (ET) administration is generally discouraged due to unpredictable absorption, except in extreme circumstances. Drug packaging and preparation require meticulous attention to avoid errors. Consider potential drug interactions and patient-specific factors.
Monitoring for adverse effects is crucial. Always have defibrillator readily available. Expert consultation should be considered when facing complex cases. Proper documentation of administered medications is essential for continuity of care and accurate record-keeping.
Resources & Further Learning
Explore ACLS drug reference PDFs and online tools for comprehensive guidance. CardioPulmonary Resuscitation guides offer detailed medical treatments and procedures for quick access.
ACLS Drug Reference PDFs & Online Tools
Numerous readily available resources enhance ACLS proficiency. Accessing comprehensive ACLS Medications and Procedures Guides in PDF format provides a portable, offline reference for critical drug information, dosages, and algorithms. Several websites offer interactive ACLS cheat sheets, allowing for quick look-up of medications like Epinephrine, Adenosine, and Amiodarone.
These online tools often include dosage calculators and rhythm interpretation guides. Furthermore, institutions frequently provide internal ICU Emergency Medication Dosing Guidelines, detailing ACLS medication usual and maximum doses. Remember to consult official sources like the American Heart Association for the most up-to-date protocols and guidelines. Utilizing these resources ensures confident and effective application of ACLS pharmacology during critical events, improving patient outcomes.
