Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

TIA · Transient Ischemic Attack

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In one line

·A blood clot briefly plugs a brain artery, then breaks apart before brain cells die—but the next clot might not dissolve in time.

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Normal physiology

·Your brain runs on oxygen delivered every second by blood flowing through a branching tree of arteries—the carotid and vertebral arteries in your neck split into smaller cerebral arteries inside your skull, feeding every brain region with a steady stream of oxygen and sugar so nerve cells can fire signals and keep you thinking, moving, seeing, and speaking.

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What goes wrong

·A blood clot or a chunk of fatty plaque suddenly plugs one of the brain arteries, cutting off oxygen to a patch of brain cells—those cells stop working instantly (causing weakness, slurred speech, or vision loss), but the clot breaks apart or squeezes through before the cells actually die, so symptoms vanish and the brain recovers completely.

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Hallmark signs

·Sudden weakness or numbness on one side of the body (face, arm, or leg)
·Sudden trouble speaking or understanding words (slurred speech, wrong words, or can't get words out)
·Sudden vision loss or double vision in one or both eyes
·Sudden severe dizziness, loss of balance, or trouble walking
·Sudden severe headache with no clear cause
·Confusion or sudden trouble thinking clearly
·All symptoms resolve completely within 24 hours (usually within minutes to one hour)
·Normal neurologic exam when the patient arrives at the hospital

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Red flags · escalate now

·Symptoms lasting longer than one hour or not fully gone (may be a stroke, not a TIA)
·New or worsening weakness, numbness, or speech trouble after the first episode clears
·Sudden severe headache, worst of your life, or headache with stiff neck or confusion
·Loss of consciousness, seizure, or severe trouble staying awake
·Symptoms return in waves or happen more than once in a short time (high risk of full stroke within hours to days)

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Workup

·MRI brain with diffusion-weighted imaging (DWI)
·CT head (non-contrast)
·Carotid Doppler ultrasound or CT/MR angiography of the neck
·12-lead ECG and continuous telemetry monitoring
·Transthoracic echocardiogram (TTE) or transesophageal echocardiogram (TEE)
·Fasting lipid panel (total cholesterol, LDL, HDL, triglycerides)
·Hemoglobin A1c
·Complete blood count (CBC) with platelet count

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Treatment

·Dual antiplatelet therapy: aspirin 325 mg loading dose, then 81 mg daily, PLUS clopidogrel 300–600 mg loading dose, then 75 mg daily for 21 days (CHANCE/POINT protocol), then aspirin alone
·High-intensity statin: atorvastatin 80 mg or rosuvastatin 20–40 mg daily, regardless of baseline LDL
·Blood pressure control: target < 140/90 mmHg for most patients, < 130/80 mmHg if diabetes or chronic kidney disease (individualize based on age and comorbidities)
·Carotid imaging (Doppler ultrasound, CT angiography, or MR angiography) followed by carotid endarterectomy or stenting within 2 weeks if symptomatic narrowing (stenosis) ≥ 70% (or 50–69% in select cases)
·Anticoagulation (warfarin with INR 2–3, or a DOAC such as apixaban 5 mg twice daily, rivaroxaban 20 mg daily, edoxaban 60 mg daily, or dabigatran 150 mg twice daily) if atrial fibrillation (an irregular, quivering heartbeat) or left ventricular a blood clot (thrombus) is found
·Diabetes control: target A1c < 7% with metformin, SGLT2 inhibitors, or GLP-1 agonists (which also lower cardiovascular risk)
·Lifestyle modification: smoking cessation, weight loss if BMI ≥ 25, regular aerobic exercise (150 minutes per week), and a Mediterranean or DASH diet

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NCLEX trap

·A TIA is a medical emergency. The risk of a full stroke is highest in the first week, especially the first 48 hours. Admit the patient right away, start two blood thinners together (aspirin and clopidogrel) for 21 days, give a statin to protect the blood vessels, and do brain imaging and heart tests before discharge. Every TIA is a loud alarm that a stroke is coming — you have a small window to stop it.
·In a TIA, the brain imaging is usually normal because the blood vessel was blocked for such a short time that no brain cells died. The normal scan is actually what we expect. A TIA is very real and very dangerous — it means the brain was starved of oxygen and the next time the block might not clear on its own. The normal imaging does not mean the patient is fine; it means you caught the warning before permanent damage happened.
·Aspirin alone is not enough after a TIA. Two big studies (CHANCE and POINT) showed that aspirin plus clopidogrel together for 21 days, then aspirin alone after that, cuts the stroke risk much more than aspirin by itself. This double blood thinner treatment for 3 weeks is now the proven standard for TIA care — it is what the evidence tells us works best.
·A TIA is different from a stroke. In a TIA, the blood vessel gets blocked but then clears before any brain tissue dies, so the damage is reversible and the symptoms go away. In a stroke, the block lasts long enough that brain cells die and the damage is permanent. A TIA is a warning sign — your chance to prevent the stroke before it happens. Treat it as an emergency.
·A TIA is any brain symptom caused by a blocked blood vessel that goes away in less than 24 hours. Even if the symptoms vanish in 20 minutes, it is still a TIA and needs the same urgent workup and treatment. The fact that it resolved quickly does not mean the risk is low — the danger of a full stroke in the next week is just as high. Time does not matter; the cause matters.
·Every patient with a TIA needs imaging of the carotid arteries — usually an ultrasound or a CT scan of the neck vessels — no matter their age or what the physical exam sounds like. If the carotid is 70 to 99 percent blocked, the patient may need surgery (carotid endarterectomy) or a stent within 2 weeks to prevent a stroke. You cannot tell how blocked the artery is just by listening or by age — you have to look inside with imaging.

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