How to Study for the ACCS Exam: A Practical Guide Based on the Official Content Outline

The best place to begin is the official NBRC Adult Critical Care Specialty Examination Detailed Content Outline. It shows what the examination covers, how heavily each major area is represented, and the types of clinical decisions candidates are expected to make.

A practical study plan should therefore follow the outline rather than treating every critical care topic as equally important. Your preparation should place the greatest emphasis on mechanical ventilation, oxygenation, airway management, respiratory failure, cardiopulmonary assessment, laboratory interpretation, pharmacology, and the management of complex ICU patients.

Start with the free ACCS diagnostic to identify your strongest and weakest areas before building a longer study plan.

What is the ACCS exam?

The ACCS examination is an advanced specialty examination for respiratory therapists working with critically ill adult patients. The content focuses on respiratory critical care as well as the broader medical, procedural, pharmacologic, and interdisciplinary knowledge needed in an adult intensive care environment.

According to the official outline, the examination contains 170 multiple-choice items. Of these, 150 are scored and 20 are pretest items. Candidates are given four hours to complete the examination.

The outline also shows that the examination is not mainly a test of isolated recall. Across the scored form, most items are classified at an integration level, meaning candidates should be prepared to combine assessment findings, monitoring data, pathophysiology, treatment principles, and patient response when selecting an answer.

That distinction matters. Knowing what PEEP is may not be enough. You may need to determine whether PEEP should be adjusted based on oxygenation, compliance, hemodynamics, imaging, ventilator waveforms, or the patient’s risk of ventilator-induced lung injury.

What topics are covered?

The official outline divides the examination into two major domains:

RESPIRATORY CRITICAL CARE

This domain accounts for 80 of the 150 scored items, making it the larger of the two major content areas.

It includes four official sections:

Manage Airways

This section covers airway clearance therapies, difficult airway recognition, intubation techniques, artificial airways, endotracheal tube exchange, and specialty tracheostomy tubes.

Study this section with an emphasis on clinical decision-making. Be able to recognise a difficult airway, select an appropriate airway technique, identify problems with an artificial airway, and understand when specialty tubes may be needed.

Administer Specialty Inhalants — Nitric Oxide, Helium-Oxygen, Nitrous Oxide

Candidates should understand indications, contraindications, complications, and clinical protocols for initiation, weaning, and liberation.

Avoid studying these agents as simple lists. Focus on why an inhalant would be selected, what physiologic effect is expected, how effectiveness is assessed, and what complications require intervention.

Apply Techniques to Enhance Ventilation, Oxygenation, or Synchrony

This is the largest individual section in the outline, accounting for 48 scored items. It includes:

• Initial invasive and noninvasive ventilatory settings
• Ventilator waveform analysis
• Recruitment manoeuvres
• Prone positioning
• Extracorporeal life support
• Liberation from invasive mechanical ventilation
• Prevention of ventilator-induced lung injury
• ARDS management
• PEEP management
• Sedation and neuromuscular blockade
• Pain, agitation, and delirium
• Differential or independent lung ventilation
• Transport of unstable patients

The size of this section means mechanical ventilation should form the centre of your ACCS preparation. The official outline assigns 48 scored items to this section alone.

Deliver Pharmacologic Agents

This section includes aerosolised medications other than standard bronchodilators, such as vasodilators, tranexamic acid, heparin, and antimicrobials. It also includes airway instillations outside of ACLS applications.

Study the route, purpose, expected effect, monitoring requirements, and potential complications of each therapy.

GENERAL CRITICAL CARE

This domain accounts for 70 of the 150 scored items. It covers the non-pulmonary and interdisciplinary aspects of adult critical care.

Its official sections include:

• Evaluate Non-Pulmonary Systems to Manage Patient Care
• Manage Contributors to Respiratory Failure
• Anticipate Care Based on Laboratory Results
• Anticipate Care Based on Imaging and / or Reports of Imaging
• Anticipate Effects of Pharmacologic Agents
• Anticipate Care Based on Nutritional Status
• Manage Patients with Infections and / or Sepsis
• Manage End-of-Life Care
• Plan for Disaster, Pandemic, and Mass Casualty Events
• Advise an Interdisciplinary Team on Management of Challenging Cases
• Perform Procedures
• Troubleshoot Systems
• Support Continuous Improvement

The broadest section is Evaluate Non-Pulmonary Systems to Manage Patient Care. It includes neurologic, cardiovascular, hemodynamic, renal, metabolic, gastrointestinal, hematologic, and musculoskeletal assessment.

For cardiovascular and hemodynamic topics, review shock, preload, afterload, contractility, heart failure, dysrhythmias, coronary artery disease, volume assessment, and relevant diagnostic testing. For renal and metabolic topics, be ready to interpret fluid status, urine output, acute kidney injury, renal replacement therapy, acid-base disorders, electrolytes, endocrine disorders, and nutrition.

The outline also identifies the patient conditions that should appear across the examination. Pulmonary conditions include obstructive lung disease, ARDS, restrictive lung disease, pulmonary embolism, pulmonary hypertension, massive hemoptysis, drowning, and burn or inhalation injury. Other medical and surgical conditions include cardiac disease, postoperative care, infection and sepsis, trauma, shock, metabolic disorders, drug toxicity, and neurologic or neuromuscular disease.

How to study for the ACCS exam

Start by organising your study plan according to the two official domains. A reasonable division of study time is approximately:

• 53% for RESPIRATORY CRITICAL CARE
• 47% for GENERAL CRITICAL CARE

Within RESPIRATORY CRITICAL CARE, give the most time to Apply Techniques to Enhance Ventilation, Oxygenation, or Synchrony. Within GENERAL CRITICAL CARE, prioritise non-pulmonary system assessment, contributors to respiratory failure, laboratory interpretation, pharmacology, and system troubleshooting.

Before you commit to a full review schedule, take the ACCS diagnostic on MedPorium so you can see whether your weak areas are concentrated in respiratory critical care, general critical care, or specific decision-making categories.

Build your foundation around patient assessment

For each topic, ask:

1. What findings indicate that a problem is developing?
2. What additional information is needed?
3. What intervention is most appropriate?
4. How should the patient’s response be evaluated?
5. What complication would require the plan to change?

This method is more effective than memorising disconnected facts because it reflects how critical care questions are commonly structured.

Study mechanical ventilation as a decision process

Do not learn ventilator modes and settings in isolation. Connect them to:

• Patient effort
• Compliance and resistance
• Gas exchange
• Acid-base status
• Hemodynamics
• Waveform appearance
• Patient-ventilator synchrony
• Risk of lung injury
• Readiness for liberation

Practise moving from a clinical problem to a ventilator adjustment, then predicting how that change may affect oxygenation, ventilation, pressures, and circulation.

Link laboratory results to anticipated care

The outline expects candidates to interpret CBC findings, cardiac and non-cardiac biomarkers, electrolytes, renal values, coagulation studies, cultures, pathogen studies, CO-oximetry, acid-base status, and body fluid analyses.

For each result, avoid stopping at “high” or “low.” Ask what the result means for the patient’s respiratory status and immediate management.

For example:

• How might severe anemia affect oxygen delivery?
• What could an elevated lactate suggest in a patient with worsening shock?
• How would renal impairment influence medication selection or dosing?
• What does an abnormal osmolar gap add to a suspected toxic exposure?
• How might a coagulation abnormality alter procedural risk?

Review devices and troubleshooting systematically

The outline includes chest tube drainage, bronchoscopy, arterial and central venous pressure monitoring, intra-aortic balloon pumps, ventricular assist devices, and ECMO circuits.

For each system, study:

• Normal function
• Expected monitoring findings
• Common alarms or malfunctions
• Patient consequences of failure
• Immediate troubleshooting priorities
• When escalation is required

How practice questions help

Practice questions are most useful when they train you to make clinical decisions rather than simply confirm memorised facts.

A strong ACCS question may combine several pieces of information, such as ventilator settings, arterial blood gases, airway pressures, hemodynamics, imaging, and the patient’s recent response to treatment. Your task is then to determine which finding matters most and what should happen next.

After each question, review more than whether you were correct. Ask:

• What clue in the scenario identified the problem?
• Why was the correct option safer or more appropriate?
• Why were the distractors less suitable?
• Was the question testing recognition, intervention, reassessment, or troubleshooting?
• What variation of the scenario could change the answer?

The MedPorium ACCS question bank can help you practise exam-style clinical reasoning across the official content areas. You can also begin with the free ACCS diagnostic to identify which domains need the most attention before committing to a longer study plan.

Common mistakes to avoid

Spending too much time on respiratory recall

Respiratory care is central to the examination, but the ACCS outline also places substantial emphasis on cardiovascular, neurologic, renal, metabolic, hematologic, nutritional, infectious, and procedural care.

Do not assume that ventilator knowledge alone is enough.

Memorising normal values without interpreting them

Knowing a reference range is only the first step. You should be able to explain what an abnormal result means, how urgent it is, and how it changes the care plan.

Ignoring low-volume sections

End-of-life care, disaster planning, continuous improvement, interdisciplinary communication, and nutrition have fewer items than ventilation or hemodynamics. They should receive less time, but not be omitted.

Studying diseases separately from management

Do not review ARDS, obstructive lung disease, pulmonary embolism, sepsis, or shock only as pathophysiology chapters. Connect each condition to assessment, monitoring, respiratory support, medications, complications, and reassessment.

Choosing an answer before reading all the data

Critical care questions may include one dramatic finding and several quieter clues. Pause long enough to identify the actual priority rather than reacting to the first abnormal value.

How MedPorium can help

MedPorium provides ACCS-focused study tools organised around exam-relevant clinical decisions.

You can use the free ACCS diagnostic test to identify early weaknesses, then work through ACCS practice questions covering respiratory and general critical care. Detailed rationales can help you understand not only why an answer is correct, but why competing options are less appropriate.

The exam-trained AI tutor can also help you review difficult concepts, compare interventions, interpret clinical findings, and work through the reasoning behind practice questions.

MedPorium is not affiliated with or endorsed by the National Board for Respiratory Care.

Final study tips

Use the official content outline as your checklist throughout preparation. Mark each section as weak, developing, or confident, then update that rating as you complete questions and review cases.

Spend the largest portion of your time on ventilation, oxygenation, synchrony, airway management, respiratory failure, multisystem assessment, laboratory interpretation, and pharmacology.

As the examination approaches, shift from reading to active recall and mixed practice. Work through scenarios that require you to combine respiratory, cardiovascular, renal, metabolic, and pharmacologic information. Practise recognising priorities under time pressure, but do not sacrifice careful reading.

The goal is not to memorise every possible ICU fact. It is to become more consistent at identifying the most important clinical problem and selecting the best-supported next action.

Start with the free ACCS diagnostic, practise ACCS questions, and use the MedPorium AI tutor to work through any critical care concepts that remain unclear.

FAQ

What should I study first for the ACCS exam?

Begin with mechanical ventilation, oxygenation, ventilator waveforms, PEEP, ARDS, airway management, and liberation from ventilation. These topics make up a large portion of RESPIRATORY CRITICAL CARE.

Then move into cardiovascular and hemodynamic assessment, shock, laboratory interpretation, pharmacology, renal function, sepsis, and equipment troubleshooting.

How much of the ACCS exam is respiratory critical care?

The official content outline assigns 80 scored items to RESPIRATORY CRITICAL CARE and 70 scored items to GENERAL CRITICAL CARE.

Does the ACCS exam include ethics?

The outline states that each item minipool includes at least five items that engage thinking about medical ethics, although an individual test form may be assembled without an item formally linked to ethics.

Should I memorise every ventilator formula?

Know the formulas and indices that help you interpret respiratory physiology, mechanics, oxygenation, and ventilation. More importantly, understand when they are useful and how the result would influence care.

Are practice questions enough by themselves?

Practice questions are most effective when paired with targeted review. Use missed questions to identify knowledge gaps, then return to the relevant content area before attempting similar scenarios again.

Where can I assess my ACCS readiness?

Start with the MedPorium free ACCS diagnostic to identify weaker areas. You can then use ACCS practice questions and the exam-trained AI tutor to build a more targeted study plan.