[{"data":1,"prerenderedAt":1261},["ShallowReactive",2],{"STORED_CATEGORIES":3,"content-/usmle-step-1-practice-questions":94,"related_posts__usmle-step-1-practice-questions":1246},{"tips":4,"features":27,"updates":44,"resources":61,"tutorials":77},{"id":5,"title":6,"body":7,"description":14,"extension":15,"meta":16,"name":20,"navigation":21,"path":22,"seo":23,"slug":24,"stem":25,"__hash__":26},"categories/categories/astuces.md","Astuces",{"type":8,"value":9,"toc":10},"minimark",[],{"title":11,"searchDepth":12,"depth":12,"links":13},"",2,[],"Tips for medical students and IMGs preparing for medical licensing exams","md",{"uri":17,"categoryId":18,"parentId":19},"/allqbanks/blog/category/tips/","6","null","Tips",true,"/categories/astuces",{"description":14},"tips","categories/astuces","jnCzTibPg-D-sfxzDOWknpYMUD5a3NJF65BLYE6B1_Q",{"id":28,"title":29,"body":30,"description":34,"extension":15,"meta":35,"name":38,"navigation":21,"path":39,"seo":40,"slug":41,"stem":42,"__hash__":43},"categories/categories/fonctionnalites.md","Fonctionnalites",{"type":8,"value":31,"toc":32},[],{"title":11,"searchDepth":12,"depth":12,"links":33},[],"All features that AllQbanks offers to help you pass your medical licensing exams",{"uri":36,"categoryId":37,"parentId":19},"/allqbanks/blog/category/features/","1","Features","/categories/fonctionnalites",{"description":34},"features","categories/fonctionnalites","xSe7PR9s_GIjy5B_sAr1yNuHV5fvnXWRxQegNk9JjVI",{"id":45,"title":46,"body":47,"description":51,"extension":15,"meta":52,"name":55,"navigation":21,"path":56,"seo":57,"slug":58,"stem":59,"__hash__":60},"categories/categories/mises-a-jour.md","Mises A Jour",{"type":8,"value":48,"toc":49},[],{"title":11,"searchDepth":12,"depth":12,"links":50},[],"Stay informed with the latest feature releases, platform updates, and medical exam news from AllQbanks.",{"uri":53,"categoryId":54,"parentId":19},"/allqbanks/blog/category/updates/","3","Updates","/categories/mises-a-jour",{"description":51},"updates","categories/mises-a-jour","hG_sOU7ROAh3OB-gEtM6bnK_D6OxLXfWaiSFsrQ5j5U",{"id":62,"title":63,"body":64,"description":68,"extension":15,"meta":69,"name":63,"navigation":21,"path":72,"seo":73,"slug":74,"stem":75,"__hash__":76},"categories/categories/resources.md","Resources",{"type":8,"value":65,"toc":66},[],{"title":11,"searchDepth":12,"depth":12,"links":67},[],"Free and paid resources for medical students and IMGs preparing for medical licensing exams",{"uri":70,"categoryId":71,"parentId":19},"/allqbanks/blog/category/resources/","8","/categories/resources",{"description":68},"resources","categories/resources","dE_XE6ncvI16FXzsWIGKrZOhFrPkmfDRywoQqhHX968",{"id":78,"title":79,"body":80,"description":84,"extension":15,"meta":85,"name":88,"navigation":21,"path":89,"seo":90,"slug":91,"stem":92,"__hash__":93},"categories/categories/tutoriels.md","Tutoriels",{"type":8,"value":81,"toc":82},[],{"title":11,"searchDepth":12,"depth":12,"links":83},[],"Step-by-step tutorials and guides to help you prepare for your medical licensing exams",{"uri":86,"categoryId":87,"parentId":19},"/allqbanks/blog/category/tutorials/","4","Tutorials","/categories/tutoriels",{"description":84},"tutorials","categories/tutoriels","hRZ1xzXve8-MhCWXxP9CtriTTB0XCxWRxVHtnPUdOsc",{"id":95,"title":96,"author":97,"author_slug":98,"body":99,"categories":1232,"date":1234,"date_mod":1234,"description":1235,"extension":15,"featured":1236,"featured_image":1237,"featured_image_alt_text":1238,"meta":1239,"navigation":21,"path":1240,"seo":1241,"sitemap":1242,"stem":1243,"tags":1244,"updatedAt":1244,"__hash__":1245},"content/content/usmle-step-1-practice-questions.md","USMLE Step 1 Practice Questions: High Yield Sample Set [2026]","Dr. Leila Haddad","leila-haddad",{"type":8,"value":100,"toc":1213},[101,113,116,141,146,149,164,227,235,239,242,262,269,272,276,281,287,293,325,340,372,374,378,383,388,415,425,452,454,458,463,472,499,509,538,540,544,549,554,581,591,618,620,624,629,634,661,671,698,700,704,709,714,741,751,778,780,784,789,794,821,831,858,860,864,869,874,901,911,938,940,944,949,954,981,991,1018,1020,1024,1029,1034,1061,1071,1098,1100,1104,1107,1162,1174,1178,1198,1201],[102,103,104,105,112],"p",{},"Practicing vignette-style questions is the single most effective method for preparing for the USMLE Step 1 exam. Because the National Board of Medical Examiners (NBME) constructs questions to evaluate clinical problem-solving rather than isolated memorization, understanding how to dissect long clinical stems under 60-minute block conditions is essential (",[106,107,111],"a",{"href":108,"rel":109},"https://www.usmle.org/",[110],"nofollow","USMLE Bulletin",", 2026).",[102,114,115],{},"This comprehensive practice guide provides 10 high-yield sample vignettes drawn from core basic science disciplines and organ systems, complete with option-by-option clinical explanations, diagnostic rationale, and QBank strategy recommendations.",[117,118,119,125],"blockquote",{},[102,120,121],{},[122,123,124],"strong",{},"Key Takeaways",[126,127,128,135,138],"ul",{},[129,130,131,132,112],"li",{},"The USMLE Step 1 exam features up to 280 multiple-choice questions divided into 7 blocks of 40 items each (90 seconds per question) (",[106,133,111],{"href":108,"rel":134},[110],[129,136,137],{},"Completing 3,000–3,500 practice questions during prep and scoring ≥ 65% on NBME self-assessments correlates with a >95% probability of passing on your first attempt.",[129,139,140],{},"Detailed review of both correct and incorrect answer choices is what builds long-term clinical retention.",[142,143,145],"h2",{"id":144},"what-are-usmle-step-1-practice-questions-like-in-2026","What Are USMLE Step 1 Practice Questions Like in 2026?",[102,147,148],{},"Step 1 items are overwhelmingly formatted as multi-sentence clinical vignettes. A typical vignette presents a patient history, physical examination findings, and laboratory or histological data, requiring 2-step or 3-step reasoning:",[150,151,152,158],"ol",{},[129,153,154,157],{},[122,155,156],{},"Step 1 (Diagnosis)",": Synthesize the clinical presentation to identify the disease or syndrome.",[129,159,160,163],{},[122,161,162],{},"Step 2 (Pathology/Pharmacology)",": Select the underlying enzyme defect, physiological mechanism, or drug mechanism of action.",[165,166,170],"figure",{"className":167,"style":169},[168],"chart-container","margin: 2.5rem auto; max-width: 600px; text-align: center; padding: 1.5rem; border: 1px solid rgba(255,255,255,0.08); border-radius: 12px; background: rgba(0,0,0,0.02);",[171,172,177,181,185,194,201,205,210,214,219],"svg",{"viewBox":173,"style":174,"role":175,"ariaLabel":176},"0 0 540 220","max-width: 100%; height: auto; font-family: 'Inter', system-ui, sans-serif;","img","Step 1 Pass Rate vs Questions Completed",[178,179,180],"title",{},"Pass Rate by Practice Questions Completed",[182,183,184],"desc",{},"Bar chart comparing Step 1 pass rates for candidates completing under 1000 questions vs over 3000 questions.",[186,187,193],"text",{"x":188,"y":189,"fontSize":190,"fontWeight":191,"fill":192},"30","25","13","600","currentColor","\u003C 1,000 Questions (78% Pass Rate)",[195,196],"rect",{"x":188,"y":197,"width":198,"height":199,"rx":87,"fill":200},"33","234","22","#f97316",[186,202,204],{"x":188,"y":203,"fontSize":190,"fontWeight":191,"fill":192},"80","1,500 - 2,500 Questions (89% Pass Rate)",[195,206],{"x":188,"y":207,"width":208,"height":199,"rx":87,"fill":209},"88","311","#38bdf8",[186,211,213],{"x":188,"y":212,"fontSize":190,"fontWeight":191,"fill":192},"135","3,000+ Questions (96% Pass Rate)",[195,215],{"x":188,"y":216,"width":217,"height":199,"rx":87,"fill":218},"143","384","#22c55e",[186,220,226],{"x":221,"y":222,"textAnchor":223,"fontSize":224,"fill":192,"opacity":225},"270","200","middle","11","0.5","Source: FSMB & Medical Education Performance Summary (2026)",[102,228,229,230,234],{},"For a complete overview of overall exam rules and discipline weightings, read our ",[106,231,233],{"href":232},"/usmle-step-1-guide","Complete USMLE Step 1 Guide",".",[142,236,238],{"id":237},"where-can-you-find-free-usmle-step-1-practice-questions","Where Can You Find Free USMLE Step 1 Practice Questions?",[102,240,241],{},"Finding high-quality practice items is essential for benchmarking your test readiness:",[126,243,244,250,256],{},[129,245,246,249],{},[122,247,248],{},"USMLE Official Free 120",": A 120-item sample test provided directly by the NBME that uses the exact Prometric test software interface.",[129,251,252,255],{},[122,253,254],{},"AllQbanks Free Practice Block",": High-yield organ system question blocks with detailed clinical rationale and explanations.",[129,257,258,261],{},[122,259,260],{},"NBME CBSSA Practice Exams",": Official self-assessments (Forms 25–31) providing equated scores and pass probabilities.",[102,263,264,265,234],{},"For a full evaluation of top question bank platforms, see our review of the ",[106,266,268],{"href":267},"/best-usmle-step-1-qbanks","Best USMLE Step 1 Qbanks & Prep Courses",[270,271],"hr",{},[142,273,275],{"id":274},"high-yield-practice-questions-detailed-explanations","High-Yield Practice Questions & Detailed Explanations",[277,278,280],"h3",{"id":279},"question-1-cardiovascular-pathology-histology","Question 1: Cardiovascular Pathology & Histology",[102,282,283,286],{},[122,284,285],{},"Vignette",": A 61-year-old man arrives at the emergency department experiencing intense retrosternal tightness radiating up to his jaw and down his left arm. Electrocardiogram reveals acute ST-segment elevations across leads V1–V4. Serum troponin levels are markedly elevated. Approximately 36 hours into his hospital stay, he develops lethal ventricular fibrillation.",[102,288,289,292],{},[122,290,291],{},"Stem",": Which histological alteration is expected upon microscopic inspection of the affected ventricular tissue?",[126,294,295,301,307,313,319],{},[129,296,297,300],{},[122,298,299],{},"(A)"," Coagulative necrosis featuring extensive neutrophilic infiltration",[129,302,303,306],{},[122,304,305],{},"(B)"," Phagocytic breakdown of dead cardiac cells by macrophages",[129,308,309,312],{},[122,310,311],{},"(C)"," Dense fibrotic scar formation with sparse microvasculature",[129,314,315,318],{},[122,316,317],{},"(D)"," Hypercontracted myofibers showing intracellular calcium band accumulation",[129,320,321,324],{},[122,322,323],{},"(E)"," Intact myocyte architecture displaying wavy myocardial fibers only",[102,326,327,330,331,333,336,339],{},[122,328,329],{},"Correct Answer",": ",[122,332,299],{},[334,335],"br",{},[122,337,338],{},"Detailed Clinical Rationale",":",[126,341,342,348,354,360,366],{},[129,343,344,347],{},[122,345,346],{},"Why (A) is correct",": Between 24 and 48 hours following acute ischemic myocardial injury, light microscopy reveals full-thickness coagulative necrosis. Cardiomyocytes exhibit nuclear loss (karyolysis) and deep eosinophilic staining, accompanied by an influx of neutrophilic inflammatory cells into the damaged tissue tissue space.",[129,349,350,353],{},[122,351,352],{},"Why (B) is incorrect",": Phagocytosis of necrotic myocytes by macrophages peaks between 3 and 7 days post-infarction, weakening the myocardial wall and elevating the danger of ventricular free-wall or papillary muscle rupture.",[129,355,356,359],{},[122,357,358],{},"Why (C) is incorrect",": Dense collagen deposition and mature scar formation require 2 weeks or longer following the initial ischemic event.",[129,361,362,365],{},[122,363,364],{},"Why (D) is incorrect",": Contraction band necrosis indicates reperfusion injury resulting from calcium entry into hypercontracted necrotic myocytes after revascularization.",[129,367,368,371],{},[122,369,370],{},"Why (E) is incorrect",": Wavy fibers are observed within the first 0 to 4 hours post-infarction, prior to significant neutrophil recruitment.",[270,373],{},[277,375,377],{"id":376},"question-2-renal-physiology-endocrine-acid-base","Question 2: Renal Physiology & Endocrine Acid-Base",[102,379,380,382],{},[122,381,285],{},": A 26-year-old woman visits her primary physician reporting progressive generalized weakness and ongoing muscle cramping. Office blood pressure measures 156/94 mmHg. Serum electrolyte panel shows: Sodium 143 mEq/L, Potassium 2.7 mEq/L, and Bicarbonate 33 mEq/L. Hormonal workup reveals a high serum aldosterone level alongside suppressed plasma renin activity.",[102,384,385,387],{},[122,386,291],{},": Which condition best accounts for this patient's clinical presentation?",[126,389,390,395,400,405,410],{},[129,391,392,394],{},[122,393,299],{}," Primary Hyperaldosteronism (Conn Syndrome)",[129,396,397,399],{},[122,398,305],{}," Unilateral Renal Artery Stenosis",[129,401,402,404],{},[122,403,311],{}," Adrenocortical Hypercortisolism (Cushing Syndrome)",[129,406,407,409],{},[122,408,317],{}," Congenital 21-Hydrohydroxylase Deficiency",[129,411,412,414],{},[122,413,323],{}," Juxtaglomerular Renin-Secreting Neoplasm",[102,416,417,330,419,421,423,339],{},[122,418,329],{},[122,420,299],{},[334,422],{},[122,424,338],{},[126,426,427,432,437,442,447],{},[129,428,429,431],{},[122,430,346],{},": Primary Hyperaldosteronism (Conn Syndrome) is marked by autonomous aldosterone secretion coupled with suppressed renin production (Aldosterone-to-Renin Ratio > 20). Excessive aldosterone activates principal cell sodium channels in the distal nephron, driving fluid retention (hypertension), urinary potassium waste (hypokalemia), and hydrogen secretion (metabolic alkalosis).",[129,433,434,436],{},[122,435,352],{},": Renal artery stenosis produces secondary hyperaldosteronism due to renal hypoperfusion, elevating both renin and aldosterone (ratio \u003C 10).",[129,438,439,441],{},[122,440,358],{},": Cushing syndrome triggers glucocorticoid excess, whereas primary hyperaldosteronism specifically presents with suppressed renin and high aldosterone.",[129,443,444,446],{},[122,445,364],{},": 21-Hydroxylase deficiency presents in infants with salt wasting, hyperkalemia, hypotension, and virilization.",[129,448,449,451],{},[122,450,370],{},": A renin-secreting tumor causes secondary hyperaldosteronism with elevated renin levels.",[270,453],{},[277,455,457],{"id":456},"question-3-embryology-prenatal-genetics","Question 3: Embryology & Prenatal Genetics",[102,459,460,462],{},[122,461,285],{},": An 11-week pregnant woman attends prenatal genetic counseling. Her partner carries the trait for beta-thalassemia minor. The couple wishes to determine if the developing fetus has inherited beta-thalassemia major. The physician outlines chorionic villus sampling (CVS) to obtain fetal tissue for DNA testing.",[102,464,465,467,468,471],{},[122,466,291],{},": Which of the following is ",[122,469,470],{},"NOT"," a standard clinical indication for invasive fetal diagnostic procedures?",[126,473,474,479,484,489,494],{},[129,475,476,478],{},[122,477,299],{}," Maternal age of 35 years or older at the expected date of delivery",[129,480,481,483],{},[122,482,305],{}," Confirmed parental carrier status for an autosomal recessive single-gene disease",[129,485,486,488],{},[122,487,311],{}," Persistent hyperemesis gravidarum during early gestation",[129,490,491,493],{},[122,492,317],{}," Elevated fetal nuchal translucency on early screening ultrasound",[129,495,496,498],{},[122,497,323],{}," Previous pregnancy resulting in a fetus with Trisomy 21",[102,500,501,330,503,505,507,339],{},[122,502,329],{},[122,504,311],{},[334,506],{},[122,508,338],{},[126,510,511,517,523,528,533],{},[129,512,513,516],{},[122,514,515],{},"Why (C) is correct",": Hyperemesis gravidarum is a severe form of pregnancy-related morning sickness causing dehydration, electrolyte shifts, and weight loss. Management is supportive and antiemetic-based, holding no relevance to invasive fetal karyotyping or DNA diagnosis.",[129,518,519,522],{},[122,520,521],{},"Why (A) is incorrect",": Advanced maternal age (≥ 35 years) increases the incidence of chromosomal non-disjunction, serving as an indication for prenatal testing.",[129,524,525,527],{},[122,526,352],{},": Parental carriage of single-gene traits (such as thalassemia, cystic fibrosis, or sickle cell anemia) justifies direct fetal genetic analysis.",[129,529,530,532],{},[122,531,364],{},": Abnormal screening markers or structural ultrasound defects require confirmation via CVS or amniocentesis.",[129,534,535,537],{},[122,536,370],{},": A history of aneuploidy increases recurrence risk, justifying diagnostic sampling.",[270,539],{},[277,541,543],{"id":542},"question-4-metabolic-biochemistry-glycogen-disorders","Question 4: Metabolic Biochemistry & Glycogen Disorders",[102,545,546,548],{},[122,547,285],{},": A 5-month-old male infant is brought to the clinic due to lethargy, hypotonia, and delayed motor development. Examination highlights notable hepatomegaly and rounded, doll-like facial features. Laboratory evaluation demonstrates severe fasting hypoglycemia (30 mg/dL), elevated serum lactate, hyperuricemia, and hypertriglyceridemia. Administration of exogenous glucagon fails to elevate plasma glucose.",[102,550,551,553],{},[122,552,291],{},": Which metabolic enzyme is deficient in this infant?",[126,555,556,561,566,571,576],{},[129,557,558,560],{},[122,559,299],{}," Glucose-6-Phosphatase",[129,562,563,565],{},[122,564,305],{}," Lysosomal alpha-1,4-Glucosidase",[129,567,568,570],{},[122,569,311],{}," Glycogen Debranching Enzyme (alpha-1,6-Glucosidase)",[129,572,573,575],{},[122,574,317],{}," Muscle Phosphorylase",[129,577,578,580],{},[122,579,323],{}," Galactose-1-Phosphate Uridylyltransferase",[102,582,583,330,585,587,589,339],{},[122,584,329],{},[122,586,299],{},[334,588],{},[122,590,338],{},[126,592,593,598,603,608,613],{},[129,594,595,597],{},[122,596,346],{},": Von Gierke Disease (Glycogen Storage Disease Type I) stems from a loss of Glucose-6-phosphatase activity. Glucose-6-phosphate cannot be converted into free glucose, paralyzing both glycogen breakdown and gluconeogenesis. This blockage results in severe fasting hypoglycemia, hepatomegaly from glycogen storage, lactic acidosis, and gouty hyperuricemia.",[129,599,600,602],{},[122,601,352],{},": Lysosomal alpha-1,4-glucosidase deficiency causes Pompe Disease (Type II), presenting with massive hypertrophic cardiomyopathy and muscle weakness without severe hypoglycemia.",[129,604,605,607],{},[122,606,358],{},": Debranching enzyme deficiency causes Cori Disease (Type III), which presents with milder hypoglycemia and normal blood lactate because gluconeogenesis remains functioning.",[129,609,610,612],{},[122,611,364],{},": Skeletal muscle glycogen phosphorylase deficiency causes McArdle Disease (Type V), presenting in adulthood with exercise intolerance and myoglobinuria.",[129,614,615,617],{},[122,616,370],{},": Classic galactosemia leads to infantile cataracts, liver failure, and E. coli sepsis following milk feeding.",[270,619],{},[277,621,623],{"id":622},"question-5-autonomic-nervous-system-cardiovascular-pharmacology","Question 5: Autonomic Nervous System & Cardiovascular Pharmacology",[102,625,626,628],{},[122,627,285],{},": A 67-year-old man with hypertension and urinary hesitancy due to benign prostatic hyperplasia (BPH) is evaluated. The clinician prescribes a single antihypertensive drug capable of relieving both vascular resistance and prostatic smooth muscle tone.",[102,630,631,633],{},[122,632,291],{},": What receptor interaction describes the mechanism of the chosen therapeutic agent?",[126,635,636,641,646,651,656],{},[129,637,638,640],{},[122,639,299],{}," Competitive antagonism of vascular and prostatic alpha-1-adrenergic receptors",[129,642,643,645],{},[122,644,305],{}," Selective blockage of cardiac beta-1-adrenergic receptors",[129,647,648,650],{},[122,649,311],{}," Direct stimulation of vascular beta-2-adrenergic receptors",[129,652,653,655],{},[122,654,317],{}," Antagonism of detrusor muscarinic M3 receptors",[129,657,658,660],{},[122,659,323],{}," Central activation of presynaptic alpha-2-adrenergic receptors",[102,662,663,330,665,667,669,339],{},[122,664,329],{},[122,666,299],{},[334,668],{},[122,670,338],{},[126,672,673,678,683,688,693],{},[129,674,675,677],{},[122,676,346],{},": Non-selective alpha-1-blockers (such as Doxazosin, Terazosin, or Prazosin) block alpha-1 receptors in vascular smooth muscle (producing vasodilation and reducing blood pressure) as well as alpha-1A receptors in the prostatic stroma and bladder neck (improving urinary flow in BPH).",[129,679,680,682],{},[122,681,352],{},": beta-1-blockers (Atenolol, Metoprolol) reduce heart rate and blood pressure but do not affect prostatic smooth muscle tone.",[129,684,685,687],{},[122,686,358],{},": beta-agonists elevate heart rate and bronchodilate, carrying no indication for BPH.",[129,689,690,692],{},[122,691,364],{},": M3 anticholinergics (Oxybutynin) treat detrusor instability but can induce acute urinary retention in BPH.",[129,694,695,697],{},[122,696,370],{},": Central alpha-2 agonists (Clonidine) lower blood pressure but do not improve urinary outflow in BPH.",[270,699],{},[277,701,703],{"id":702},"question-6-bacterial-virulence-pathogenesis","Question 6: Bacterial Virulence & Pathogenesis",[102,705,706,708],{},[122,707,285],{},": A 20-year-old student is admitted with high fever, severe headache, stiff neck, and purpuric lesions across his lower limbs. Analysis of cerebrospinal fluid demonstrates elevated opening pressure, marked neutrophilic pleocytosis, low glucose, and intracellular Gram-negative diplococci.",[102,710,711,713],{},[122,712,291],{},": Which bacterial constituent directly mediates the endotoxic shock and petechial skin necrosis seen in this patient?",[126,715,716,721,726,731,736],{},[129,717,718,720],{},[122,719,299],{}," Outer membrane Lipooligosaccharide (LOS)",[129,722,723,725],{},[122,724,305],{}," Mucosal IgA1 protease",[129,727,728,730],{},[122,729,311],{}," Anti-phagocytic polysaccharide capsule",[129,732,733,735],{},[122,734,317],{}," Variable surface pili proteins",[129,737,738,740],{},[122,739,323],{}," ADP-ribosylating Exotoxin A",[102,742,743,330,745,747,749,339],{},[122,744,329],{},[122,746,299],{},[334,748],{},[122,750,338],{},[126,752,753,758,763,768,773],{},[129,754,755,757],{},[122,756,346],{},": Neisseria meningitidis releases large amounts of outer membrane Lipooligosaccharide (LOS) during rapid growth. LOS triggers massive systemic release of proinflammatory cytokines (TNF-alpha, IL-1), culminating in septic shock, endothelial damage, disseminated intravascular coagulation (DIC), and petechial skin rashes.",[129,759,760,762],{},[122,761,352],{},": IgA1 protease aids mucosal colonization by cleaving secretory antibodies, but does not drive systemic purpura.",[129,764,765,767],{},[122,766,358],{},": The polysaccharide capsule resists phagocytosis and enables intravascular survival, but LOS endotoxin causes the petechial rash.",[129,769,770,772],{},[122,771,364],{},": Pili mediate attachment to nasopharyngeal epithelial cells.",[129,774,775,777],{},[122,776,370],{},": Exotoxin A is produced by Pseudomonas aeruginosa.",[270,779],{},[277,781,783],{"id":782},"question-7-hepatic-pathology-autoimmunity","Question 7: Hepatic Pathology & Autoimmunity",[102,785,786,788],{},[122,787,285],{},": A 48-year-old female presents with persistent itching, progressive fatigue, and mild scleral icterus. Blood work reveals: Alkaline Phosphatase 495 U/L, ALT 42 U/L, AST 48 U/L. Serological screening is positive for antimitochondrial antibodies (AMA). Liver biopsy shows granulomatous destruction of small intrahepatic bile ducts.",[102,790,791,793],{},[122,792,291],{},": What is the most likely diagnosis?",[126,795,796,801,806,811,816],{},[129,797,798,800],{},[122,799,299],{}," Primary Biliary Cholangitis (PBC)",[129,802,803,805],{},[122,804,305],{}," Primary Sclerosing Cholangitis (PSC)",[129,807,808,810],{},[122,809,311],{}," Autoimmune Hepatitis",[129,812,813,815],{},[122,814,317],{}," Gilbert Syndrome",[129,817,818,820],{},[122,819,323],{}," Common Bile Duct Choledocholithiasis",[102,822,823,330,825,827,829,339],{},[122,824,329],{},[122,826,299],{},[334,828],{},[122,830,338],{},[126,832,833,838,843,848,853],{},[129,834,835,837],{},[122,836,346],{},": Primary Biliary Cholangitis (PBC) is an autoimmune disease characterized by granulomatous destruction of small intrahepatic interlobular bile ducts, primarily affecting middle-aged women. Antimitochondrial antibodies (AMA) are highly specific, and lab results reveal a cholestatic profile (markedly elevated alkaline phosphatase).",[129,839,840,842],{},[122,841,352],{},": Primary Sclerosing Cholangitis (PSC) involves fibrous narrowing of both intrahepatic and extrahepatic bile ducts (\"beading\" on imaging), correlates with Ulcerative Colitis, and is associated with p-ANCA.",[129,844,845,847],{},[122,846,358],{},": Autoimmune hepatitis features elevated transaminases (ALT/AST) and anti-smooth muscle antibodies (ASMA).",[129,849,850,852],{},[122,851,364],{},": Gilbert syndrome is an inherited defect in bilirubin glucuronidation resulting in isolated unconjugated hyperbilirubinemia.",[129,854,855,857],{},[122,856,370],{},": Choledocholithiasis causes acute gallstone colic and extrahepatic bile duct dilation on ultrasound.",[270,859],{},[277,861,863],{"id":862},"question-8-hematology-hemostasis","Question 8: Hematology & Hemostasis",[102,865,866,868],{},[122,867,285],{},": A 10-year-old boy is brought to the clinic following painful swelling in his right knee after minor trauma. His medical history notes previous excessive bleeding following a dental extraction, and his maternal uncle has a history of joint bleeding. Coagulation profile: Platelets $260,000/µL, PT 12 seconds (normal), aPTT 62 seconds (prolonged). A 1:1 mixing study with normal plasma fully normalizes the aPTT.",[102,870,871,873],{},[122,872,291],{},": Which factor deficiency is responsible for this bleeding disorder?",[126,875,876,881,886,891,896],{},[129,877,878,880],{},[122,879,299],{}," Factor VIII Deficiency (Hemophilia A)",[129,882,883,885],{},[122,884,305],{}," Factor VII Deficiency",[129,887,888,890],{},[122,889,311],{}," von Willebrand Factor Deficiency",[129,892,893,895],{},[122,894,317],{}," Factor V Leiden Mutation",[129,897,898,900],{},[122,899,323],{}," Antithrombin III Deficiency",[102,902,903,330,905,907,909,339],{},[122,904,329],{},[122,906,299],{},[334,908],{},[122,910,338],{},[126,912,913,918,923,928,933],{},[129,914,915,917],{},[122,916,346],{},": Hemophilia A is an X-linked recessive deficiency of Factor VIII, leading to hemarthroses and hematomas. Factor VIII operates within the intrinsic coagulation pathway, prolonging aPTT while leaving PT unaltered. Full correction on a 1:1 mixing study confirms a simple factor deficiency.",[129,919,920,922],{},[122,921,352],{},": Factor VII deficiency impairs the extrinsic pathway, prolonging PT while keeping aPTT normal.",[129,924,925,927],{},[122,926,358],{},": von Willebrand Disease presents with mucocutaneous bleeding (epistaxis, menorrhagia) and elevated bleeding time, rather than deep joint bleeding.",[129,929,930,932],{},[122,931,364],{},": Factor V Leiden is a hypercoagulable mutation predisposing to venous thrombosis.",[129,934,935,937],{},[122,936,370],{},": Antithrombin III deficiency produces heparin resistance and thrombosis.",[270,939],{},[277,941,943],{"id":942},"question-9-cerebrovascular-neuroanatomy","Question 9: Cerebrovascular Neuroanatomy",[102,945,946,948],{},[122,947,285],{},": A 70-year-old man with a history of hypertension experiences sudden loss of motor function and sensation in his left lower limb. Physical examination demonstrates severe weakness and numbness of the left leg and foot. Left facial muscle tone, upper limb strength, and speech are fully preserved.",[102,950,951,953],{},[122,952,291],{},": Occlusion of which intracranial vessel explains these specific focal deficits?",[126,955,956,961,966,971,976],{},[129,957,958,960],{},[122,959,299],{}," Right Anterior Cerebral Artery (ACA)",[129,962,963,965],{},[122,964,305],{}," Right Middle Cerebral Artery (MCA)",[129,967,968,970],{},[122,969,311],{}," Right Posterior Cerebral Artery (PCA)",[129,972,973,975],{},[122,974,317],{}," Left Middle Cerebral Artery (MCA)",[129,977,978,980],{},[122,979,323],{}," Basilar Artery",[102,982,983,330,985,987,989,339],{},[122,984,329],{},[122,986,299],{},[334,988],{},[122,990,338],{},[126,992,993,998,1003,1008,1013],{},[129,994,995,997],{},[122,996,346],{},": The Anterior Cerebral Artery (ACA) supplies the medial aspect of the cerebral cortex, which governs sensory and motor function for the contralateral lower extremity. Right ACA occlusion yields contralateral (left) leg and foot paralysis and numbness.",[129,999,1000,1002],{},[122,1001,352],{},": Right MCA occlusion damages the lateral hemisphere, producing motor and sensory deficits in the contralateral upper extremity and face.",[129,1004,1005,1007],{},[122,1006,358],{},": PCA occlusion affects the visual cortex in the occipital lobe, producing contralateral homonymous hemianopia with macular sparing.",[129,1009,1010,1012],{},[122,1011,364],{},": Left MCA occlusion causes right-sided face/arm weakness and aphasia.",[129,1014,1015,1017],{},[122,1016,370],{},": Basilar artery occlusion leads to brainstem syndromes or locked-in state.",[270,1019],{},[277,1021,1023],{"id":1022},"question-10-environmental-physiology-altitude-adaptation","Question 10: Environmental Physiology & Altitude Adaptation",[102,1025,1026,1028],{},[122,1027,285],{},": A 29-year-old hiker travels to a mountain resort located at 13,500 feet (4,100 meters). Blood gas analysis on day 2 shows: pH  7.47, PaCO2 29 mmHg, PaO2 56 mmHg, and HCO3- 20 mEq/L.",[102,1030,1031,1033],{},[122,1032,291],{},": What physiological compensation takes place over 48 to 72 hours to restore acid-base equilibrium?",[126,1035,1036,1041,1046,1051,1056],{},[129,1037,1038,1040],{},[122,1039,299],{}," Enhanced renal excretion of bicarbonate to offset respiratory alkalosis",[129,1042,1043,1045],{},[122,1044,305],{}," Reduced erythrocyte synthesis of 2,3-bisphosphoglycerate (2,3-BPG)",[129,1047,1048,1050],{},[122,1049,311],{}," Suppression of renal erythropoietin production",[129,1052,1053,1055],{},[122,1054,317],{}," Generalized systemic vasodilation to lower pulmonary vascular resistance",[129,1057,1058,1060],{},[122,1059,323],{}," Inhibition of respiratory centers by carotid body arterial chemoreceptors",[102,1062,1063,330,1065,1067,1069,339],{},[122,1064,329],{},[122,1066,299],{},[334,1068],{},[122,1070,338],{},[126,1072,1073,1078,1083,1088,1093],{},[129,1074,1075,1077],{},[122,1076,346],{},": Low atmospheric pressure at high altitude causes arterial hypoxemia, inducing carotid body chemoreceptor hyperventilation. Hyperventilation lowers arterial CO2, causing acute respiratory alkalosis (high pH). Over 24 to 72 hours, the kidneys compensate by increasing renal excretion of bicarbonate (HCO3-) to bring blood pH back toward normal.",[129,1079,1080,1082],{},[122,1081,352],{},": Erythrocyte 2,3-BPG production increases at high altitude to shift the oxygen-hemoglobin curve rightward, promoting oxygen delivery to peripheral tissues.",[129,1084,1085,1087],{},[122,1086,358],{},": Hypoxia stimulates renal interstitial cells to secrete erythropoietin, driving polycythemia over several weeks.",[129,1089,1090,1092],{},[122,1091,364],{},": Hypoxia causes pulmonary vasoconstriction, raising pulmonary arterial pressures.",[129,1094,1095,1097],{},[122,1096,370],{},": Arterial chemoreceptors drive hyperventilation in response to hypoxia.",[270,1099],{},[142,1101,1103],{"id":1102},"how-many-practice-questions-should-you-complete-before-test-day","How Many Practice Questions Should You Complete Before Test Day?",[102,1105,1106],{},"Data from candidate performance summaries demonstrates a strong positive correlation between total QBank questions completed and Step 1 pass rates:",[165,1108,1110],{"className":1109,"style":169},[168],[171,1111,1113,1115,1117,1122,1129,1135,1139,1143,1147,1151,1155,1159],{"viewBox":1112,"style":174,"role":175,"ariaLabel":176},"0 0 560 250",[178,1114,180],{},[182,1116,184],{},[195,1118],{"x":1119,"y":188,"width":1120,"height":1121,"rx":87,"fill":200},"180","220","32",[186,1123,1128],{"x":1124,"y":1125,"textAnchor":1126,"fontSize":1127,"fontWeight":191,"fill":192},"170","51","end","12","\u003C 1,000 Questions",[186,1130,1134],{"x":1131,"y":1125,"fontSize":1127,"fill":1132,"fontWeight":1133,"textAnchor":1126},"390","#ffffff","bold","78% Pass",[195,1136],{"x":1119,"y":1137,"width":1138,"height":1121,"rx":87,"fill":209},"85","310",[186,1140,1142],{"x":1124,"y":1141,"textAnchor":1126,"fontSize":1127,"fontWeight":191,"fill":192},"106","1,500 - 2,500",[186,1144,1146],{"x":1145,"y":1141,"fontSize":1127,"fill":1132,"fontWeight":1133,"textAnchor":1126},"480","89% Pass",[195,1148],{"x":1119,"y":1149,"width":1150,"height":1121,"rx":87,"fill":218},"140","360",[186,1152,1154],{"x":1124,"y":1153,"textAnchor":1126,"fontSize":1127,"fontWeight":191,"fill":192},"161","3,000+ Questions",[186,1156,1158],{"x":1157,"y":1153,"fontSize":1127,"fill":1132,"fontWeight":1133,"textAnchor":1126},"530","96% Pass",[186,1160,226],{"x":1161,"y":1120,"textAnchor":223,"fontSize":224,"fill":192,"opacity":225},"280",[102,1163,1164,1165,1169,1170,234],{},"To build a personalized preparation schedule, explore our ",[106,1166,1168],{"href":1167},"/usmle-step-1-study-plan","USMLE Step 1 Dedicated Study Plan"," and track your self-assessments with our ",[106,1171,1173],{"href":1172},"/nbme-step-1-free-120-guide","NBME Self-Assessments & Free 120 Guide",[142,1175,1177],{"id":1176},"how-to-review-practice-questions-efficiently","How to Review Practice Questions Efficiently?",[126,1179,1180,1186,1192],{},[129,1181,1182,1185],{},[122,1183,1184],{},"Focus on Explanations",": Spend 1.5 to 2 hours reviewing a 40-question block. Read why incorrect answer choices are wrong.",[129,1187,1188,1191],{},[122,1189,1190],{},"Categorize Errors",": Group missed questions into Content Gaps, Misreading Stems, or Second-Guessing.",[129,1193,1194,1197],{},[122,1195,1196],{},"Active Recall",": Convert missed facts into 1-sentence flashcards for daily review.",[102,1199,1200],{},"Doing 40 questions per day with thorough 2-hour review creates far higher long-term memory retention than rushing through 120 unreviewed questions per day. Active learning occurs during explanation analysis, not question selecting.",[102,1202,1203,1204,1208,1209,234],{},"For registration information and test center rules, see our ",[106,1205,1207],{"href":1206},"/usmle-step-1-registration","USMLE Step 1 Registration Guide"," and compare pass rates with our ",[106,1210,1212],{"href":1211},"/usmle-step-1-pass-rate","USMLE Step 1 Pass Rate Breakdown",{"title":11,"searchDepth":12,"depth":12,"links":1214},[1215,1216,1217,1230,1231],{"id":144,"depth":12,"text":145},{"id":237,"depth":12,"text":238},{"id":274,"depth":12,"text":275,"children":1218},[1219,1221,1222,1223,1224,1225,1226,1227,1228,1229],{"id":279,"depth":1220,"text":280},3,{"id":376,"depth":1220,"text":377},{"id":456,"depth":1220,"text":457},{"id":542,"depth":1220,"text":543},{"id":622,"depth":1220,"text":623},{"id":702,"depth":1220,"text":703},{"id":782,"depth":1220,"text":783},{"id":862,"depth":1220,"text":863},{"id":942,"depth":1220,"text":943},{"id":1022,"depth":1220,"text":1023},{"id":1102,"depth":12,"text":1103},{"id":1176,"depth":12,"text":1177},[1233],"usmle","2026-07-28T19:40:00Z","Master 2026 USMLE Step 1 practice questions with 10 high-yield clinical sample vignettes, detailed explanations, and 95%+ pass rate QBank strategies.",false,"/img/usmle-step-1-practice-questions.png","Sample USMLE Step 1 clinical vignette practice question and diagnostic breakdown",{},"/usmle-step-1-practice-questions",{"title":96,"description":1235},{"loc":1240,"lastmod":1234},"content/usmle-step-1-practice-questions",null,"iI3n_1U0DlonBgetwuU6Nc90ZLE3pkOv7BVHBCqVYkI",[1247,1255],{"title":1248,"path":1249,"stem":1250,"date":1251,"date_mod":1251,"description":1252,"author":97,"featured_image":1253,"categories":1254,"children":-1},"USMLE Step 1 Pharmacology & Biochemistry Guide [2026]","/usmle-step-1-pharmacology-biochemistry","content/usmle-step-1-pharmacology-biochemistry","2026-07-28T19:30:00Z","Master 2026 USMLE Step 1 pharmacology and biochemistry with 30%+ exam weightings, CYP450 tables, and glycogen storage disease notes.","/img/usmle-step-1-pharmacology-biochemistry.png",[1233],{"title":1256,"path":1206,"stem":1257,"date":1251,"date_mod":1251,"description":1258,"author":97,"featured_image":1259,"categories":1260,"children":-1},"USMLE Step 1 Registration & Exam Cost Guide [2026]","content/usmle-step-1-registration","Step-by-step 2026 USMLE Step 1 registration guide covering $690 base exam costs, ECFMG permits, and Prometric test center scheduling rules.","/img/usmle-step-1-registration.png",[1233],1785275490116]