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Key Facts: ABIM Critical Care Exam

Up to 240

Exam Questions

ABIM 2026

~10 hours

Exam Day Length

ABIM 2026

$2,325

Application + Exam Fee

ABIM 2026

86%

First-Time Pass Rate (2025)

ABIM pass rates 2021-2025

24 months

CCM Training Required (12 clinical)

ABIM policies

5-yr LKA

MOC Option

ABIM MOC

The ABIM Critical Care Medicine subspecialty exam certifies internists to practice as adult medical intensivists. It consists of up to 240 single-best-answer MCQs in four sessions of up to 60 questions each, on a single exam day of about 10 hours (including 100 minutes of total break time) at Pearson VUE centers. The initial certification examination fee is $2,325. Eligibility requires active ABIM Internal Medicine certification plus ACGME-accredited training of 24 months (at least 12 clinical) or 36 months (at least 18 clinical) in a combined pulmonary and critical care fellowship. The official blueprint distributes content across 12 medical categories: Pulmonary Disease (17%), Shock (15%), Renal/Endocrine/Metabolic (13%), Cardiovascular Disorders (13%), Infectious Disease (10%), Neurologic Disorders (9%), GI Disorders (5%), Hematologic/Oncologic (5%), Surgical Specialties (5%), Pharmacology/Toxicology (5%), Ultrasound Scanning (2%), and Research/Administration/Ethics (1%). Once certified, diplomates maintain certification via the Longitudinal Knowledge Assessment (LKA) or the 10-year recertification exam.

Sample ABIM Critical Care Practice Questions

Try these sample questions to review concepts for the ABIM Critical Care exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 62-year-old man with community-acquired pneumonia has BP 78/42 mmHg, HR 118, lactate 5.2 mmol/L, and cool extremities. Per the Surviving Sepsis Campaign 2021 1-hour bundle, which intervention is required?
A.30 mL/kg IV crystalloid and broad-spectrum antibiotics within 1 hour after blood cultures
B.Start norepinephrine before any fluid resuscitation
C.Targeted CVP 8-12 mmHg before antibiotics
D.Transfuse packed red cells to hemoglobin ≥10 g/dL
Explanation: SSC 2021 1-hour bundle for septic shock or sepsis-induced hypoperfusion (MAP <65 or lactate ≥4): remeasure lactate, draw blood cultures before antibiotics, broad-spectrum antibiotics within 1 hour, 30 mL/kg crystalloid within 3 hours, and start vasopressors for MAP ≥65 if hypotension persists or recurs. CVP-guided resuscitation and routine transfusion to Hgb 10 are no longer part of the bundle.
2A patient with septic shock remains hypotensive (MAP 58 mmHg) on norepinephrine 0.4 mcg/kg/min after adequate fluid resuscitation. Per SSC 2021, the next most appropriate step is to add:
A.Vasopressin 0.03 U/min
B.Phenylephrine 1 mcg/kg/min
C.Dopamine 10 mcg/kg/min
D.Dobutamine 5 mcg/kg/min
Explanation: SSC 2021 recommends adding vasopressin at a fixed dose of 0.03 U/min as the second-line agent when norepinephrine alone is insufficient to achieve MAP ≥65 mmHg. Vasopressin spares catecholamines. Epinephrine is typically added third. Dopamine is no longer preferred because of arrhythmogenicity. Dobutamine is an inotrope for suspected cardiac dysfunction, not first-line vasopressor therapy.
3A patient with septic shock on norepinephrine 0.5 mcg/kg/min and vasopressin 0.03 U/min remains vasopressor-dependent for 6 hours. Per SSC 2021, which therapy should be added?
A.IV hydrocortisone 200 mg/day
B.Activated protein C
C.IVIG
D.High-dose methylprednisolone 30 mg/kg
Explanation: SSC 2021 suggests IV hydrocortisone 200 mg/day (50 mg q6h or continuous infusion) for adults with septic shock who require ongoing vasopressors — typically when norepinephrine ≥0.25 mcg/kg/min has been required for at least 4 hours. ACTH stimulation testing is not required before initiation. Activated protein C was withdrawn from the market. IVIG and high-dose methylprednisolone are not recommended.
4In a septic shock patient who has received 60 mL/kg of balanced crystalloid and remains hypotensive with rising vasopressor requirements, SSC 2021 suggests:
A.Adding albumin to the resuscitation fluid strategy
B.Switching to normal saline
C.Starting hydroxyethyl starch
D.Bolus of fresh frozen plasma
Explanation: SSC 2021 suggests using albumin in septic shock patients who have received large volumes of crystalloid, based on the ALBIOS and SAFE trial data showing no harm and potential benefit in the septic subgroup. Hydroxyethyl starches are recommended AGAINST because of nephrotoxicity (CHEST, VISEP, 6S). Normal saline is associated with hyperchloremic acidosis (SMART favored balanced). FFP is for coagulopathy/bleeding, not volume.
5A 55-year-old with pneumonia has PaO2 70 mmHg on FiO2 0.8, PEEP 10, bilateral infiltrates, and no evidence of cardiogenic edema on echo. By the Berlin definition, ARDS severity is:
A.Moderate (PF 100-200)
B.Mild (PF 200-300)
C.Severe (PF ≤100)
D.Does not meet Berlin criteria
Explanation: PaO2/FiO2 = 70/0.8 = 87.5. However, Berlin severity requires PEEP ≥5 cmH2O. With a PF of ~88 and PEEP 10, this meets severe criteria (PF ≤100). Re-check: PaO2 70 / FiO2 0.8 = 87.5 → severe. In practice, moderate ARDS is PF 100-200 and severe is ≤100. This patient is severe — the correct answer key label is 'severe.'
6Per the ARDSnet lung-protective ventilation strategy, initial tidal volume should be set at which target?
A.6 mL/kg predicted (ideal) body weight
B.10 mL/kg actual body weight
C.8 mL/kg actual body weight
D.12 mL/kg predicted body weight
Explanation: ARDSnet (NEJM 2000) demonstrated mortality benefit with tidal volumes of 4-6 mL/kg of predicted (ideal) body weight, targeting plateau pressure ≤30 cmH2O. Using actual body weight overestimates the target lung volume in patients with elevated BMI. The result is a ~9% absolute mortality reduction compared with 12 mL/kg.
7A patient with severe ARDS (PF 85) remains hypoxemic on 6 mL/kg IBW tidal volume, PEEP 14, FiO2 1.0. Per PROSEVA, which intervention has been shown to reduce mortality?
A.Prone positioning for at least 12-16 consecutive hours per day
B.High-frequency oscillatory ventilation (HFOV)
C.Routine inhaled nitric oxide
D.Early tracheostomy
Explanation: PROSEVA (NEJM 2013) showed that prone positioning for ≥16 hours/day in patients with moderate-to-severe ARDS (PF<150, FiO2 ≥0.6, PEEP ≥5) reduced 28-day mortality from 32.8% to 16.0%. HFOV trials (OSCILLATE, OSCAR) showed no benefit or harm. Inhaled nitric oxide improves oxygenation transiently without mortality benefit. Tracheostomy timing does not alter ARDS mortality.
8In severe ARDS (PF <120) with persistent ventilator dyssynchrony, the ACURASYS trial and subsequent analyses support a 48-hour infusion of which agent?
A.Cisatracurium
B.Rocuronium
C.Dexmedetomidine
D.Ketamine
Explanation: ACURASYS (NEJM 2010) showed early cisatracurium infusion for 48 hours in severe ARDS reduced 90-day mortality and improved ventilator-free days. ROSE (NEJM 2019) did not replicate the mortality benefit but confirmed safety. Current practice is case-by-case NMB with cisatracurium for severe ARDS with dyssynchrony or refractory hypoxemia. Rocuronium is typically for intubation, not sustained paralysis in ARDS. Dexmedetomidine and ketamine are sedatives, not NMBs.
9Per EOLIA (and subsequent Bayesian re-analysis), VV-ECMO should be considered in severe ARDS when which criteria are met?
A.PaO2/FiO2 <50 for >3 hours, or <80 for >6 hours, or pH <7.25 with PaCO2 ≥60 for >6 hours
B.PaO2/FiO2 <200 for 24 hours on FiO2 0.6
C.Plateau pressure 28 cmH2O after 6 hours of mechanical ventilation
D.Any patient with COVID-19 pneumonia requiring FiO2 >0.5
Explanation: EOLIA inclusion criteria for VV-ECMO: PF <50 for >3 hours, or PF <80 for >6 hours, or pH <7.25 with PaCO2 ≥60 mmHg for >6 hours despite optimized mechanical ventilation (TV 6 mL/kg, PEEP ≥10, plateau ≤32, RR up to 35). EOLIA did not meet its primary mortality endpoint but Bayesian re-analysis suggested benefit. Selection should also consider no major contraindications (advanced age, severe comorbidities, prolonged mechanical ventilation >7 days).
10A patient with acute hypoxemic respiratory failure (non-hypercapnic) has PF 180 on simple face mask. FLORALI (NEJM 2015) supports which initial respiratory support strategy?
A.High-flow nasal cannula oxygen at 50-60 L/min
B.Immediate intubation
C.Bilevel NIV (BiPAP)
D.Non-rebreather at 15 L/min only
Explanation: FLORALI showed that in acute hypoxemic respiratory failure without hypercapnia, high-flow nasal cannula (HFNC, e.g., 50-60 L/min, FiO2 titrated) reduced 90-day mortality compared with standard oxygen or NIV — particularly in patients with PF ≤200. NIV increased the intubation rate in the hypoxemic subgroup. HFNC washes out anatomic dead space, provides small PEEP, and improves work of breathing.

About the ABIM Critical Care Exam

The ABIM Critical Care Medicine (CCM) exam is the subspecialty board certification for internists who have completed ACGME-accredited Critical Care Medicine training of 24 months (at least 12 clinical months), or a combined 36-month Pulmonary Disease and Critical Care Medicine fellowship (at least 18 clinical months). The exam covers adult ICU management with emphasis on the medical ICU — pulmonary disease, shock, renal/endocrine/metabolic disorders, cardiovascular disorders, infectious disease, neurologic disorders, gastrointestinal disorders, hematologic and oncologic disorders, surgical specialties, pharmacology and toxicology, critical care ultrasound scanning, and research/administration/ethics. Under ABMS reciprocity, Member Boards (ABA, ABEM, ABS) use equivalent CCM content through their own pathways.

Exam sponsor: American Board of Internal Medicine (ABIM). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

240 questions

Time Limit

About a 10-hour exam day: four sessions of up to 60 questions, plus 100 minutes of total break time

Passing Score

Criterion-referenced scaled score (pass/fail)

Exam / Certification Fees

$2,325

Exam sponsor website

Reported exam pass rate: 86% (2025). ABIM-reported first-time pass rate: 86% in 2025 (1,030 first-time takers); 92% in 2021, 89% in 2022, 85% in 2023, 89% in 2024 This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

17%

Pulmonary Disease

Acute respiratory failure, mechanical ventilation modes/liberation, ARDS (Berlin definition, lung-protective ventilation, prone positioning, VV-ECMO), obstructive lung disease, PE, and pleural emergencies

15%

Shock

Pathophysiology and classification of shock (distributive, cardiogenic, hypovolemic, obstructive), hemodynamic monitoring, vasoactive therapy escalation, and post-cardiac arrest resuscitation (TTM2)

13%

Renal, Endocrine, and Metabolic Disorders

KDIGO AKI staging, CRRT vs IHD, RRT timing trials (AKIKI, STARRT-AKI), electrolyte emergencies, complex acid-base analysis, and endocrine crises (DKA, HHS, thyroid storm, adrenal crisis)

13%

Cardiovascular Disorders

Acute coronary syndromes, unstable arrhythmias, temporary pacing, acute heart failure, cardiogenic shock, mechanical circulatory support (Impella, IABP, VA-ECMO), and aortic dissection

10%

Infectious Disease

Surviving Sepsis Campaign 2026 guidelines and timing of antimicrobials, ICU-acquired infections (VAP, CLABSI, CAUTI bundles), multi-drug resistant organisms, and severe systemic infections

9%

Neurologic Disorders

Coma, delirium (CAM-ICU), status epilepticus, acute stroke/ICH/SAH, elevated ICP management, acute neuromuscular respiratory failure, and brain death determination

5%

Gastrointestinal Disorders

Acute GI bleeding, acute liver failure (King's College criteria, cerebral edema), severe pancreatitis, and acute mesenteric ischemia

5%

Hematologic and Oncologic Disorders

Heparin-induced thrombocytopenia (4T score), DIC, thrombotic microangiopathies (TTP/HUS), restrictive transfusion (TRICC), and anticoagulation reversal

5%

Surgical Specialties

Damage control resuscitation, polytrauma, severe burns (Parkland formula), abdominal compartment syndrome, and perioperative surgical critical care

5%

Pharmacology and Toxicology

Critical illness pharmacokinetics, toxic ingestions and toxidromes (salicylates, acetaminophen, toxic alcohols, opioids, cardiotoxins), and specific antidotes

2%

Critical Care Ultrasound Scanning

Point-of-care ultrasound (POCUS) protocols, focused cardiac ultrasound, lung ultrasound (A/B-lines, sliding, consolidation), and procedural guidance

1%

Research, Administration, and Ethics

ICU administration, patient safety metrics, advance directives, surrogate decision-making, withholding/withdrawing life support, and organ donation

Preparing for the ABIM Critical Care Exam

What You Need to Know

  • Passing score: Criterion-referenced scaled score (pass/fail)
  • Exam length: 240 questions
  • Time limit: About a 10-hour exam day: four sessions of up to 60 questions, plus 100 minutes of total break time
  • Exam / certification fees: $2,325 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

ABIM Critical Care: Suggested Study Strategy

1Know the 2026 Surviving Sepsis Campaign statements cold: blood cultures before antimicrobials; antimicrobials immediately, ideally within 1 hour, for septic shock or probable sepsis; at least 30 mL/kg crystalloid in the first 3 hours for sepsis-induced hypoperfusion; balanced crystalloids over 0.9% saline; MAP target 65 mmHg, or 60-65 mmHg at age 65 or older; norepinephrine first, add vasopressin on escalating doses, then epinephrine; IV corticosteroids are suggested in septic shock; prolonged beta-lactam infusion for maintenance dosing after a loading dose
2Master the ARDS definitions and lung-protective targets: the Berlin categories (mild PaO2/FiO2 201-300, moderate 101-200, severe 100 or less on PEEP of at least 5 cmH2O), the 2024 global definition that adds high-flow nasal oxygen and SpO2/FiO2 criteria, tidal volume 4-8 mL/kg predicted body weight with plateau pressure 30 cmH2O or less, prone positioning for more than 12 hours daily when PaO2/FiO2 is below 150 (PROSEVA), neuromuscular blockade reserved for selected severe ARDS (ACURASYS versus ROSE), and VV-ECMO per EOLIA criteria in experienced centers
3Know the post-cardiac-arrest temperature evidence: HACA and the 2002 Australian trial supported 33 degrees Celsius, TTM (2013) showed 33 and 36 degrees were equivalent, and TTM2 (2021) showed no benefit of 33 degrees over normothermia. AHA 2025 recommends deliberate temperature control at a constant temperature between 32 and 37.5 degrees Celsius, for at least 36 hours, with fever prevention afterward; delay neuroprognostication to at least 72 hours and combine examination, EEG, somatosensory evoked potentials, neuron-specific enolase or neurofilament light, and imaging
4Be fluent in AKI and renal replacement therapy — KDIGO stages 1/2/3, CRRT vs IHD (hemodynamic instability or elevated ICP → CRRT), CVVH vs CVVHDF. Remember the timing trials: AKIKI and STARRT-AKI showed that watchful waiting is acceptable for stage 3 AKI without a life-threatening indication for urgent initiation
5For elevated intracranial pressure, walk the tiers: head of bed at 30 degrees with the neck midline, analgesia and sedation, osmotherapy (30 mL of 23.4% hypertonic saline through a central line, about 250 mL of 3% saline, or mannitol 0.5-1 g/kg), CSF drainage through an external ventricular drain, treat above 22 mmHg, keep cerebral perfusion pressure 60-70 mmHg, then decompressive craniectomy; brief hyperventilation only as rescue for herniation. In aneurysmal subarachnoid hemorrhage, secure the aneurysm preferably within 24 hours, give enteral nimodipine 60 mg every 4 hours for 21 days, and watch for delayed cerebral ischemia from about day 4 to day 14

Frequently Asked Questions

Who can take the ABIM Critical Care Medicine exam?

Candidates must hold active ABIM Internal Medicine certification at the time of application and must satisfactorily complete ACGME-accredited Critical Care Medicine training: 24 months with at least 12 clinical months in the stand-alone pathway, or 36 months with at least 18 clinical months in a combined Pulmonary Disease and Critical Care Medicine fellowship. Training must be complete by October 31 of the examination year, and the program director attests to clinical competence. Physicians from anesthesiology, emergency medicine, or surgery pursue Critical Care Medicine certification through their own parent boards (ABA, ABEM, ABS).

How is the ABIM CCM exam structured?

The Critical Care Medicine examination contains up to 240 single-best-answer multiple-choice questions in four sessions of up to 60 questions each, on a single exam day of roughly 10 hours that includes 100 minutes of total break time, at Pearson VUE test centers. The 2026 administration is scheduled for October 26 to 30, 2026. Questions are case-based and emphasize clinical application of current guidance (the 2026 Surviving Sepsis Campaign, ARDS definitions, KDIGO, post-arrest temperature control, and PADIS) rather than rote recall.

Is ABIM CCM the same exam as ABA CCM?

ABIM, ABA, ABEM, and ABS all recognize Critical Care Medicine as an ABMS subspecialty, and their blueprints cover much of the same core content. Each Member Board administers its own examination: the ABIM version is internal-medicine-weighted, with more medical ICU content such as sepsis, acute kidney injury, hepatic failure, and hematologic disease, while the ABA version includes more cardiothoracic and anesthesia-related critical care. Candidates apply through their primary certifying board.

What is the passing score for the ABIM CCM exam?

ABIM uses an absolute standard set by its specialty board through a standard-setting process, reported as pass or fail, and the threshold is not published as a percentage. Unanswered questions are scored as incorrect, so there is no reason to leave an item blank. ABIM reported first-time pass rates of 92% in 2021, 89% in 2022, 85% in 2023, 89% in 2024, and 86% in 2025.

How much does the ABIM CCM exam cost?

The initial certification examination fee is $2,325 (with an additional $400 fee if registering during the late registration window). Total preparation cost including the SCCM Comprehensive Critical Care Review, Marino's ICU Book, and a high-yield question bank typically ranges from $3,000 to $4,800.

What topics are emphasized on the ABIM CCM exam?

The January 2026 blueprint, used from the fall 2026 examination, covers 12 categories: Pulmonary Disease (17%), Shock (15%), Renal, Endocrine and Metabolic Disorders (13%), Cardiovascular Disease (13%), Infectious Disease (10%), Neurology (9%), Gastrointestinal Disease (5%), Hematology and Oncology (5%), Surgical Critical Care (5%), Pharmacology and Toxicology (5%), Critical Care Ultrasound Scanning (2%), and Research, Administration and Ethics (1%). Half of the questions test treatment and care decisions and 40% test diagnosis and testing. The heaviest second-level topics are mechanical ventilation (6%), distributive shock (5%), and cardiogenic shock (4%).

How do I maintain ABIM CCM certification?

ABIM diplomates maintain CCM certification through the Longitudinal Knowledge Assessment (LKA) — an open-book, quarterly question set delivered over a 5-year cycle — or through the traditional 10-year recertification exam. Diplomates must also meet MOC activity requirements and hold an active unrestricted medical license.

How long should I study for the ABIM Critical Care Medicine exam?

Most candidates study 250 to 400 hours over 6 to 12 months alongside fellowship. Preparation usually combines a comprehensive critical care review course, a standard ICU textbook, the current primary guidelines (including the 2026 Surviving Sepsis Campaign), board-style question banks, and case-based bedside learning. Clinical volume in the medical ICU is the strongest predictor of examination success.