PALS Treatment Guidelines: Complete Study Guide for Hypoglycemia, Cardiac Arrest & Pediatric Emergencies

PALS hypoglycemia treatment is one of the most tested and clinically critical topics in Pediatric Advanced Life Support certification. Hypoglycemia in children can mimic seizures, altered mental status, and even cardiac arrest — making rapid recognition and correct dextrose dosing a life-saving skill every provider must master before their exam. Understanding the full spectrum of pals treatment guidelines builds the foundation you need to pass your certification and confidently manage real pediatric emergencies.

Pediatric Advanced Life Support guidelines are updated periodically by the American Heart Association to reflect the latest evidence in resuscitation science. The 2020 AHA guidelines — still in effect for 2026 certification cycles — introduced key updates to CPR quality metrics, epinephrine timing, and post-resuscitation care that every candidate must internalize. Knowing which protocols changed and why is as important as memorizing drug doses, because exam questions frequently test reasoning over rote recall.

This study guide covers every major treatment algorithm you will encounter on the PALS written exam and skills stations: respiratory distress and failure, shock recognition and management, cardiac arrest rhythms, post-cardiac arrest care, and pediatric-specific metabolic emergencies including hypoglycemia, hyperkalemia, and toxicologic causes of arrhythmia. Each section includes the clinical reasoning framework the AHA uses to structure these algorithms so you can reconstruct the right answer even under exam pressure.

One major advantage of studying PALS treatment protocols systematically is that the algorithms are built on a small number of physiologic principles applied repeatedly across different clinical scenarios. Once you understand why epinephrine is the first-line vasopressor in anaphylactic shock AND cardiac arrest, the dosing differences between routes and scenarios become logical rather than arbitrary. This principle-based approach is far more durable than memorizing disconnected drug doses and will serve you in clinical practice long after your exam date.

This guide is organized to mirror the structure of the actual PALS course: you will move from assessment frameworks through rhythm recognition, algorithm selection, pharmacology, and special circumstances. Each section includes high-yield exam tips drawn from commonly missed question types, real clinical examples that anchor abstract protocols to patient scenarios, and word counts you can track to ensure your study sessions are thorough. Candidates who engage actively with these materials — not just reading but self-testing — consistently report higher first-attempt pass rates.

Whether you are a registered nurse preparing for your first PALS certification, a paramedic renewing after two years, or a physician assistant seeking to deepen your pediatric emergency skills, this guide meets you where you are. The protocols apply equally across provider types because PALS is a team-based discipline. Understanding your role within the resuscitation team and how to communicate using PALS terminology — closed-loop communication, clear roles, constructive debriefing — is tested on the written exam and evaluated directly in the skills stations.

Take the time to work through each section sequentially rather than jumping to the topics you feel least confident about. PALS algorithms are interconnected: the systematic approach to a child in respiratory distress feeds directly into the shock recognition algorithm, which in turn determines whether you are managing a pre-arrest or arrest situation. Building this cognitive map end-to-end is the single most effective preparation strategy, and this guide is structured to help you do exactly that.

PALS hypoglycemia treatment follows a precise, weight-based protocol that differs significantly from adult glucose management. The definition of hypoglycemia in pediatrics is a blood glucose below 50 mg/dL in children and below 45 mg/dL in neonates, though symptomatic children with levels below 60 mg/dL warrant immediate treatment. Symptoms include jitteriness, poor feeding, apnea, hypothermia, diaphoresis, altered consciousness, and seizures — many of which overlap with other pediatric emergencies, making point-of-care glucose measurement an essential early step in every resuscitation.

The dextrose dose for pediatric hypoglycemia is 0.5 to 1 gram per kilogram, with the concentration of dextrose solution varying by age to prevent osmotic injury. Neonates receive D10W (10% dextrose) at 5 to 10 mL/kg because hypertonic solutions cause venous sclerosis in small peripheral veins and risk rebound hypoglycemia from excessive insulin release. Infants and children typically receive D25W at 2 to 4 mL/kg, while adolescents can safely receive D50W at 1 to 2 mL/kg through a well-functioning peripheral IV. Always flush the line with normal saline after dextrose administration to prevent localized tissue injury.

After the initial dextrose bolus, recheck blood glucose within 15 to 30 minutes and initiate a continuous dextrose infusion if the glucose does not stabilize. The standard maintenance infusion uses a glucose infusion rate (GIR) of 6 to 8 mg/kg/minute in neonates, titrated up to 10 to 12 mg/kg/minute for persistent hypoglycemia. On the PALS exam, questions about hypoglycemia frequently test whether you select the correct dextrose concentration by age, time your glucose recheck appropriately, and recognize when an underlying cause — such as hyperinsulinism, adrenal insufficiency, or metabolic disease — requires additional workup beyond supportive glucose management.

Hyperkalemia is the second major metabolic emergency featured in PALS treatment guidelines. Dangerous hyperkalemia in children is defined as a serum potassium above 6.5 mEq/L and is particularly common in patients with renal failure, rhabdomyolysis, or massive transfusion. The classic ECG changes progress from peaked T waves (early) to PR prolongation, wide QRS, and ultimately a sine-wave pattern that precedes ventricular fibrillation.

Treatment prioritizes cardiac membrane stabilization with calcium gluconate 10% at 60 to 100 mg/kg IV over two to five minutes, followed by sodium bicarbonate, insulin plus dextrose, and albuterol to shift potassium intracellularly while definitive removal is arranged through dialysis or kayexalate.

Toxicologic causes of pediatric cardiac arrest receive dedicated attention in PALS guidelines because they require deviation from standard algorithms. Sodium channel blocker toxicity — from tricyclic antidepressants or local anesthetics — produces wide-complex tachycardia and hypotension that responds to sodium bicarbonate 1 to 2 mEq/kg IV bolus. Calcium channel blocker and beta-blocker overdoses causing refractory shock are treated with high-dose insulin euglycemic therapy (HIET), with regular insulin at 1 unit/kg/hour plus dextrose infusion titrated to maintain euglycemia. Opioid toxicity causing respiratory arrest responds to naloxone 0.01 mg/kg IV/IO/IM, with repeat dosing every two to three minutes until spontaneous respirations resume.

The systematic approach to any child with altered mental status in a PALS scenario begins with the same mnemonic used across all algorithms: Airway, Breathing, Circulation, Disability, Exposure (ABCDE). Disability assessment includes the AVPU scale (Alert, Voice, Pain, Unresponsive) and bedside glucose — this is where hypoglycemia is caught. Exposure means fully undressing the child to identify rashes (meningococcemia, anaphylaxis), trauma, or signs of abuse that could explain the presentation. Documenting temperature is also part of exposure, as both hyperthermia and hypothermia alter drug metabolism and resuscitation thresholds in pediatric patients.

Metabolic acidosis encountered during PALS resuscitation is typically a consequence of shock rather than a primary cause, and treating the underlying shock is more effective than empiric bicarbonate administration. The 2020 AHA guidelines specifically state that routine sodium bicarbonate use during cardiac arrest is not recommended and may worsen intracellular acidosis by generating CO2 that crosses cell membranes.

Bicarbonate is indicated in specific circumstances: severe hyperkalemia, tricyclic antidepressant toxicity, severe metabolic acidosis with pH below 7.10 unresponsive to ventilation and volume, and prolonged cardiac arrest where buffering capacity is genuinely depleted. Knowing these narrow indications is a reliable source of difficult exam questions.

Bradycardia management in PALS is one of the most nuanced sections of the guidelines because not all slow heart rates require treatment. The algorithm begins with a critical question: is the child's bradycardia causing cardiopulmonary compromise? Signs of compromise include hypotension, acute altered mental status, signs of shock, and chest pain. A sleeping infant with a heart rate of 85 beats per minute who is well-perfused and responsive does not require intervention. A toddler with a heart rate of 50 and poor perfusion despite oxygen is in a PALS emergency.

When bradycardia is causing compromise, the first intervention is always high-flow oxygen via non-rebreather mask or BVM ventilation if the child is not breathing adequately. Hypoxia is the most common cause of bradycardia in children, and correcting it often restores a normal rate without drug intervention. Only if bradycardia persists despite oxygenation and ventilation do you escalate to epinephrine 0.01 mg/kg IV/IO, which is preferred over atropine in most pediatric scenarios.

Atropine 0.02 mg/kg (minimum 0.1 mg, maximum 0.5 mg) is reserved specifically for bradycardia caused by increased vagal tone or primary AV block, and the minimum dose threshold is critically important because paradoxical bradycardia from a sub-therapeutic atropine dose is a well-documented and commonly tested complication.

Transcutaneous pacing is indicated for bradycardia unresponsive to medications, particularly in children with complete heart block or post-cardiac surgery conduction abnormalities. The PALS exam rarely tests detailed pacing parameters but does test the indication — knowing when to call for pacing while continuing CPR is the expected provider competency. Team communication during bradycardia management should follow PALS team dynamics principles: the team leader designates a time keeper, assigns clear roles, and verbalizes the algorithm step being executed so all members share situational awareness.

Tachycardia management in PALS distinguishes between narrow-complex (QRS less than 0.09 seconds) and wide-complex (QRS 0.09 seconds or greater) presentations, then further classifies each as stable or unstable based on perfusion status.

Narrow-complex tachycardia with a rate above 220 beats per minute in an infant or above 180 beats per minute in a child is strongly suggestive of supraventricular tachycardia (SVT). The distinction between SVT and sinus tachycardia is tested frequently: sinus tachycardia has a history consistent with a cause (fever, pain, dehydration), a rate typically below 220 in infants, visible P waves, and rate variability. SVT has an abrupt onset, no identifiable cause, a fixed rate that does not vary with stimulation, and often no visible P waves.

Stable SVT is treated first with vagal maneuvers — ice to the face for infants, Valsalva for older children — before adenosine. If vagal maneuvers fail, adenosine 0.1 mg/kg rapid IV push (maximum 6 mg) is the drug of choice, followed by a rapid saline flush to deliver the drug to central circulation before it is metabolized.

Adenosine has a half-life of less than 10 seconds, so speed of administration is essential. A second dose of 0.2 mg/kg (maximum 12 mg) can be given if the first dose fails. Unstable SVT with hemodynamic compromise bypasses drug therapy entirely — synchronized cardioversion at 0.5 to 1 J/kg is the immediate intervention, escalating to 2 J/kg if needed.

Wide-complex tachycardia in children is less common than in adults but carries high mortality and must be presumed ventricular tachycardia (VT) until proven otherwise. Stable wide-complex tachycardia is treated with amiodarone 5 mg/kg IV over 20 to 60 minutes or procainamide 15 mg/kg IV over 30 to 60 minutes — notably, these two agents should not be used together due to additive risk of hypotension and QT prolongation.

Unstable VT with a pulse is treated with synchronized cardioversion at 0.5 to 1 J/kg, with procedural sedation administered if time and hemodynamics permit. Pulseless VT follows the cardiac arrest shockable rhythm pathway described earlier.

The exam distinguishes synchronized cardioversion from unsynchronized defibrillation by clinical scenario: if there is a pulse, synchronize to avoid delivering energy during the vulnerable T-wave period (which can precipitate VF). If the patient is pulseless, do not wait to synchronize — deliver unsynchronized defibrillation immediately. This distinction appears in multiple exam question formats, including rhythm strip interpretation with hemodynamic data, making it one of the highest-yield pairs of concepts to master during PALS study.

Respiratory emergencies account for the majority of pediatric cardiac arrests, which is why PALS places such heavy emphasis on early recognition and aggressive respiratory management before arrest occurs. The pathway from respiratory distress to respiratory failure to cardiac arrest can unfold in minutes in a small child, and providers who intervene at the distress stage prevent the arrest entirely. Understanding the clinical signs that distinguish distress from failure — and failure from imminent arrest — is the most important assessment skill tested across the PALS written exam and skills stations.

Respiratory distress is characterized by increased work of breathing with maintained gas exchange: you see nasal flaring, accessory muscle use, head bobbing, and tachypnea, but the child is still alert, maintaining airway patency, and moving adequate tidal volumes. Treatment at this stage is supplemental oxygen and addressing the underlying cause — bronchodilators for reactive airway disease, heliox for croup, positioning for upper airway obstruction.

Respiratory failure occurs when the child can no longer compensate: SpO2 falls despite supplemental oxygen, the child becomes somnolent, and breath sounds may decrease as fatigue reduces respiratory effort. This is the stage where BVM ventilation and preparation for advanced airway management are mandatory.

Upper airway obstruction presents with inspiratory stridor and is caused by croup (viral laryngotracheobronchitis), epiglottitis, foreign body aspiration, or anaphylaxis. Croup is the most common cause in children six months to three years and responds to nebulized racemic epinephrine (0.5 mL of 2.25% solution in 3 mL NS) and dexamethasone 0.6 mg/kg IM or PO.

Epiglottitis — now rare due to Hib vaccination — presents with the classic tripod position, drooling, dysphonia, and a toxic-appearing child. Do not examine the throat or attempt IV access before securing the airway in a controlled OR setting, as any agitation can precipitate complete obstruction.

Lower airway obstruction produces expiratory wheezing and is most commonly caused by asthma or bronchiolitis. Moderate asthma exacerbation is treated with albuterol 2.5 mg via nebulizer (or 4–8 puffs MDI with spacer) every 20 minutes for three doses, ipratropium bromide for the first hour, and systemic corticosteroids (oral prednisolone 1 mg/kg or IV methylprednisolone 1 mg/kg). Severe asthma unresponsive to initial bronchodilators may require IV magnesium sulfate 25 to 75 mg/kg (maximum 2 g) over 20 minutes, ketamine induction for intubation in extremis, or heliox to reduce airway resistance.

Bronchiolitis, primarily caused by RSV in infants under two, does not respond to albuterol in controlled trials but supportive care with high-flow nasal cannula oxygen frequently prevents progression to intubation.

Pneumonia causing respiratory failure in children requires supplemental oxygen, appropriate antibiotics, and respiratory support titrated to severity. Bacterial pneumonia in previously healthy children is treated with ampicillin or amoxicillin as first-line, broadened to cover atypical organisms with azithromycin or a fluoroquinolone in older children with CAP. PALS exam questions about pneumonia typically focus on recognition of the respiratory failure pattern and appropriate escalation from high-flow oxygen to CPAP/BIPAP to intubation, rather than antibiotic selection. Know that CPAP (continuous positive airway pressure) is an appropriate bridge therapy for children with intact respiratory drive who are fatiguing but not yet in failure.

Tension pneumothorax is a rapidly fatal obstructive cause of respiratory failure and cardiac arrest. Classic findings include absent breath sounds on the affected side, tracheal deviation away from the affected side, jugular venous distension, and progressive hypotension unresponsive to fluid.

Needle decompression is performed at the second intercostal space, midclavicular line using a 14 or 16-gauge angiocatheter (or at the fourth or fifth intercostal space, anterior axillary line, which avoids the internal mammary vessels). A rush of air confirms the diagnosis and provides immediate decompression. Definitive treatment is chest tube thoracostomy. On the PALS exam, tension pneumothorax appears as a PEA arrest scenario where the clinical clues are subtle but sufficient to identify this treatable H/T cause.

Reviewing pals treatment guidelines before your exam means not just memorizing the respiratory algorithms in isolation but understanding how they feed into the shock and cardiac arrest pathways. A child with severe asthma who is not responding to bronchodilators may progress to respiratory arrest, then PEA — the provider who recognized the transition early and secured the airway in the pre-arrest window prevented a far more difficult resuscitation. This integrated, anticipatory thinking is what separates providers who consistently perform well in PALS scenarios from those who manage each step in isolation without projecting forward along the clinical trajectory.

Preparing for PALS skills stations requires a different study strategy than written exam preparation. The written exam tests cognitive knowledge — recognizing rhythms, selecting drugs, sequencing interventions. The skills stations test psychomotor performance under time pressure, often with simulated team dynamics that require you to simultaneously perform and communicate. The most effective preparation combines individual skills practice with team-based simulation, ideally in an environment that mimics the actual course station layout and evaluator criteria.

CPR quality is evaluated directly in the skills station and indirectly in scenario-based stations through questions about compression rate and depth. To internalize the target rate of 100 to 120 compressions per minute, practice with a metronome set to 110 BPM until that cadence is automatic.

Compression depth should reach at least one-third the anterior-posterior chest diameter — approximately 1.5 inches in infants and 2 inches in children. The common error is compressing too shallowly due to fear of rib fractures; evaluators will flag inadequate depth as a critical deficiency. Full chest recoil between compressions is equally important and is often lost when providers lean on the chest between cycles.

Medication administration in skills stations is verbalized rather than physically drawn up, but you must state the correct dose, concentration, and route with confidence. Practice the verbalization out loud: say the patient weight, calculate the dose, state the volume if relevant, name the route, and describe the flush.

For example: the child weighs 20 kg, epinephrine dose is 0.2 mg, which is 2 mL of 1:10,000 solution, IV push, follow with 5 mL normal saline flush. Evaluators give credit for correct verbalization even if you momentarily hesitate on the arithmetic, so a systematic approach that shows your reasoning is more reliable than trying to recall a memorized number under pressure.

Team dynamics in PALS are graded across every scenario station. The five core behaviors are: knowing your limitations and asking for help, constructive intervention when an error is about to occur, knowledge sharing to keep the team informed, mutual respect regardless of hierarchy, and closed-loop communication to confirm every order is heard and executed.

In the exam context, practicing these behaviors means assigning roles at the start of each scenario, verbally confirming every drug order before administering it, and explicitly closing the loop after each CPR cycle check. Evaluators are watching whether the team leader is actually leading — narrating the algorithm, anticipating next steps, and keeping the team synchronized — not just performing individual tasks.

The debriefing component of PALS is formative, meaning it is intended to teach rather than purely evaluate. After each scenario station, the instructor reviews performance using a structured debriefing model — typically Gather, Analyze, Summarize — which mirrors the approach used in hospital simulation programs. Candidates who engage actively in debriefing, ask clarifying questions, and connect feedback to specific algorithm steps learn far more from each station than those who passively receive comments.

This active debriefing mindset also applies to your self-review of practice exam questions: for every wrong answer, trace the error back to its source — was it a knowledge gap, a reading error, or a reasoning mistake — and address that root cause rather than simply re-reading the correct answer.

Time management on the PALS written exam is rarely a significant challenge because the 50-question format allows approximately 1.5 to 2 minutes per question, which is more than sufficient for most candidates. The greater risk is overanalyzing questions and second-guessing correct initial responses. PALS exam questions are written to have one clearly correct answer and three clearly incorrect distractors when the underlying concept is well understood.

If a question feels genuinely ambiguous, apply the algorithm: what does the pediatric assessment tell you, what category of emergency is this, and which intervention does the PALS algorithm specify at this step. Trust the algorithm over clinical intuition on the exam, even if your bedside experience might lead you to a different choice in practice.

Final preparation in the 48 hours before your PALS course should focus on consolidation rather than new learning. Review the complete set of algorithms in the AHA PALS Provider Manual, run through drug dose calculations for a hypothetical 15 kg and 30 kg patient to ensure your arithmetic is reliable, and mentally rehearse the skills station scenarios from start to finish including team role assignments.

Get adequate sleep the night before — cognitive performance under the procedural and scenario demands of a PALS course is measurably impaired by sleep deprivation. Arrive hydrated, with a protein-rich meal completed, and with your required documentation ready so no administrative issue disrupts your focus on the content.