| Condition | Key Finding | Association | Board Exam Tip |
| Subarachnoid Hemorrhage | Worst headache of life; N/V | Non-contrast Head CT -> LP for xanthochromia | Always remember to control BP (Labetalol) and give seizure prophylaxis (Mezopramide). |
| Acute Limb Ischemia | Pale, cold limb; severe pain | History of DVT/MI; Time is limb. | Immediate management is Heparin infusion + Vascular Surgery consult. Do NOT delay for imaging. |
| Thyroid Storm | Fever, Tachycardia ( 140 bpm), Altered mental status | -blockers (Propranolol) first line; PTU/Carbimazole second line. | Propranolol is the first drug administered to stabilize cardiac function. |
| Idiopathic Intracranial Hypertension | Morning headaches, blurry vision, BMI 30 | Acetazolamide; LP confirmation. | The diagnosis is often a "pseudo-tumor" and requires ruling out secondary causes (e.g., medication effects). |
| Topic | Key Point | Context | Exam Relevance |
| SAH Workup | Non-contrast Head CT -> LP for xanthochromia | Suspected SAH, negative CT scan. | The lumbar puncture is the definitive step to rule out blood products in CSF. |
| Acute Mesenteric Ischemia | Angiography (Diagnostic & Therapeutic) | History of embolus/MI; severe abdominal pain. | This condition requires immediate vascular imaging and potential revascularization. |
| Hypothyroidism | Fatigue, bradycardia ( 60 bpm), low mood | Routine physical exam or TSH testing. | Bradycardia is a classic finding; the initial test to confirm is TSH. |
| Acute Pancreatitis | Abdominal pain, elevated Lipase/Amylase | Alcohol abuse history. | Initial management is supportive: IV fluids and NPO status. Antibiotics are generally not indicated. |
| Board-speak / Vignette phrase | Diagnosis / Concept | Why it fits |
| Patient presents with the "worst headache of his life" starting 30 minutes ago. | Subarachnoid Hemorrhage (SAH) | Classic presentation; requires immediate non-contrast head CT, followed by LP if CT is negative but suspicion remains. |
| A patient has a history of atrial fibrillation and presents with TIA symptoms. | Anticoagulation required for TIA/Stroke prevention | A Fib increases embolic risk; anticoagulants (Warfarin/Heparin) are necessary over antiplatelets in this specific high-risk scenario. |
| Patient develops severe abdominal pain, tender abdomen, following recent MI/history of embolus. | Acute Mesenteric Ischemia | Emboli usually originate from the left atrial appendage (A Fib). Diagnosis requires angiography; management is urgent revascularization. |
| A patient with chronic liver disease and fever shows mild abdominal tenderness on exam. | Spontaneous Bacterial Peritonitis (SBP) | Requires paracentesis, looking for >250 neutrophils in the ascitic fluid. Treatment is Ceftriaxone. |
| Patient presents with morning headaches, blurry vision, and BMI 30. | Idiopathic Intracranial Hypertension (IIH)/Pseudotumor Cerebri | Requires LP to confirm elevated ICP; treatment involves Acetazolamide and lifestyle modifications (weight loss). |
| A patient on SSR Is reports difficulty achieving erection. | Sexual side effects of SSR Is | The goal is to switch the antidepressant to a drug class that does not cause sexual dysfunction, such as Bupropion (NDRI) or Mirtazapine. |
| Key Features | Distinguishing Findings | Next Step |
| Spontaneous Bacterial Peritonitis (SBP) | Ascitic fluid analysis; fever, abdominal tenderness. | Paracentesis: >250 neutrophils in ascitic fluid culture. Treat with Ceftriaxone. |
| Acute Colitis | Fever, right upper quadrant pain, leukocytosis. | Right Upper Quadrant Ultrasound -> If negative/equivocal after 4 hours -> Consider percutaneous colostomy. |
| Key Features | Distinguishing Findings | Next Step |
| Acute Dystonia | Sudden, severe muscle spasms/posturing after drug initiation. | Treat with anticholinergics (Benztropine) or antihistamines (Diphenhydramine). |
| Parkinsonism | Resting tremor, rigidity, bradykinesia. | First line: Anti-cholinergics; Second line: Dopamine agonists/L-Dopa. |
| Condition | Association | Mechanism | Clinical Significance |
| Transient Ischemic Attack (TIA) | Carotid Ultrasound | Embolic source from carotid stenosis. | Requires antiplatelet therapy; if A Fib is present, anticoagulation is mandatory. |
| Acute Mesenteric Ischemia | Superior Mesenteric Artery (SMA) embolus | Often originates from the left atrial appendage thrombus (A Fib). | Diagnosis requires angiography and urgent revascularization; time is limb/gut. |
| Hypothyroidism | Bradycardia, fatigue, weight gain | Decreased metabolic rate affecting cardiac conduction. | TSH measurement is the primary screening tool for diagnosis. |
| Restless Legs Syndrome (RLS) | Iron deficiency, dopamine agonists | Dopamine dysregulation in the nigrostriatal pathway. | Treatment involves dopamine agonists (Pramipexole) or iron supplementation. |
| Term | Definition | Context | Example |
| Xanthochromia | Yellowish discoloration of CSF due to breakdown products of hemoglobin. | Subarachnoid Hemorrhage workup via LP. | Finding xanthochromia confirms the presence of blood products in the CSF, even if CT is negative. |
| Antiplatelet Agent | Drug that inhibits platelet aggregation (e.g., Aspirin). | TIA/Stroke prevention; stable CAD management. | Aspirin or Clopidogrel are used for patients without high embolic risk. |
| Paracentesis | Aspiration of fluid from the peritoneal cavity. | Suspected SBP in chronic liver disease. | Analyzing ascitic fluid for neutrophil count is diagnostic for SBP. |
| Acetazolamide | Carbonic anhydrase inhibitor; carbonic acid excretion promoter. | Treatment of Idiopathic Intracranial Hypertension (IIH). | Reduces CSF production, thereby lowering intracranial pressure. |
| Topic | Study Approach | Priority | Resources |
| Acute Emergencies | Flowchart/Algorithm-based review | High (Must know the first 3 steps) | Review board question banks focusing on "Next Best Step." |
| Endocrine Disorders | Symptom -> Test -> Diagnosis -> Tx | Medium-High | Create a table comparing hypo- vs hyperthyroidism and adrenal insufficiency. |
| Vascular Pathology | Etiology/Source tracing (A Fib, Atherosclerosis) | High | Focus on the specific imaging modality (CTA/MRA/Angiography) for each condition. |
🚫Mistake 1: Assuming all three Light's criteria must be positive for exudative effusion. Correction: Only ONE of the three criteria (Pleural fluid/serum protein > 0.5, Pleural fluid/serum LDH > 0.6, or pleural LDH > 2/3 ULN) needs to be met to classify an effusion as exudative.