Ictus (Stroke): A Complete Guide for Patients

What is Ictus (Stroke)?

The term ictus is the medical Spanish word for “stroke.” A stroke occurs when blood flow to a part of the brain is interrupted, depriving brain cells of oxygen and nutrients. Within minutes, affected cells start to die, which can lead to sudden neurological deficits that last from a few minutes to a lifetime.

Strokes are broadly classified into two major types:

• Ischemic stroke – caused by a blockage (thrombus or embolus) in an artery supplying the brain. It accounts for about 85 % of all strokes.
• Hemorrhagic stroke – caused by bleeding into or around the brain due to a ruptured vessel. This includes intracerebral hemorrhage and subarachnoid hemorrhage.

Both types are medical emergencies because brain tissue cannot regenerate; rapid treatment is essential to restore blood flow, limit damage, and improve outcomes.

Common Causes

Many medical conditions increase the risk of an ictus. Below are the most frequently implicated causes:

• Hypertension (high blood pressure) – the single biggest modifiable risk factor for both ischemic and hemorrhagic strokes.
• Atrial fibrillation (AFib) – irregular heart rhythm that can throw clots into the bloodstream.
• Atherosclerosis – plaque buildup in carotid or cerebral arteries causing narrowing or sudden plaque rupture.
• Diabetes mellitus – accelerates vascular damage and promotes clot formation.
• Smoking – toxins damage blood‑vessel lining and raise clotting tendency.
• High cholesterol – especially elevated LDL, contributes to plaque formation.
• Obstructive sleep apnea – intermittent hypoxia raises blood pressure and inflammation.
• Heavy alcohol use – can trigger hypertension and atrial fibrillation.
• Previous TIA or stroke – a “mini‑stroke” often precedes a larger event.
• Blood clotting disorders – e.g., antiphospholipid syndrome, factor V Leiden mutation.

Associated Symptoms

Because the brain controls every bodily function, stroke symptoms vary with the area affected. Common accompanying signs include:

• Sudden weakness or numbness, especially on one side of the face, arm, or leg.
• Difficulty speaking or understanding speech (aphasia).
• Blurred or loss of vision in one or both eyes.
• Loss of balance, coordination, or sudden dizziness.
• Severe, sudden headache with no known cause (more typical in hemorrhagic stroke).
• Difficulty swallowing (dysphagia).
• Confusion, memory loss, or sudden change in mental status.
• Seizures (more common in hemorrhagic strokes).

When to See a Doctor

Any of the following warrants immediate medical attention, even if symptoms improve quickly:

• Sudden facial droop or uneven smile.
• Weakness or numbness in an arm or leg, especially if it’s one‑sided.
• Speech that is slurred, garbled, or difficult to understand.
• Sudden trouble seeing out of one or both eyes.
• Loss of balance, coordination, or a sudden, severe headache.
• Any neurological change that appears suddenly and lasts more than a few minutes.

If you suspect a stroke, call emergency services (e.g., 911 in the U.S.) right away—time is brain.

Diagnosis

Emergency physicians use a combination of clinical assessment and imaging to confirm a stroke and identify its type.

Initial Clinical Evaluation

• NIH Stroke Scale (NIHSS) – quantifies neurological deficit.
• Rapid blood glucose check – to rule out hypoglycemia that can mimic stroke.
• Blood pressure, cardiac rhythm, and basic labs (CBC, electrolytes, coagulation profile).

Imaging

• Non‑contrast CT scan – performed within the first hour; detects hemorrhage quickly.
• CT angiography (CTA) or MR angiography (MRA) – visualizes arterial blockages.
• Diffusion‑weighted MRI – most sensitive for early ischemic changes.
• CT perfusion – helps identify salvageable brain tissue (penumbra).

Additional Tests

• Carotid duplex ultrasound – evaluates plaque in neck arteries.
• Echocardiogram (transthoracic or transesophageal) – looks for cardiac sources of emboli.
• Electrocardiogram (ECG) and continuous cardiac monitoring – to detect atrial fibrillation or other arrhythmias.
• Blood work for clotting disorders, lipid profile, and inflammatory markers.

Treatment Options

Treatment differs markedly between ischemic and hemorrhagic strokes and must be started as quickly as possible.

Acute Ischemic Stroke

• Intravenous thrombolysis (tPA) – alteplase given within 3‑4.5 hours of symptom onset to dissolve the clot.
• Endovascular thrombectomy – mechanical removal of large clots, effective up to 24 hours in selected patients.
• Antiplatelet agents (e.g., aspirin) if tPA is contraindicated.
• Management of blood pressure, glucose, and temperature to optimize brain perfusion.
• Admission to a stroke unit for close monitoring.

Hemorrhagic Stroke

• Blood pressure control – rapid but careful reduction to prevent re‑bleeding.
• Reversal of anticoagulation – vitamin K, prothrombin complex concentrate, or idarucizumab if on dabigatran.
• Surgical evacuation for large intracerebral hemorrhages or clot removal in subarachnoid hemorrhage.
• Management of intracranial pressure (ICP) with head elevation, osmotic agents, or ventriculostomy.

Rehabilitation & Long‑Term Care

• Physical, occupational, and speech therapy to regain function.
• Medications to prevent recurrence – antiplatelets (aspirin, clopidogrel) or anticoagulants (warfarin, DOACs) based on cause.
• Lifestyle modification counseling (smoking cessation, diet, exercise).
• Psychological support for depression, anxiety, or post‑stroke cognitive changes.

Prevention Tips

Most risk factors are modifiable. Incorporate these evidence‑based strategies to lower your stroke risk:

• Control blood pressure – aim for < 130/80 mmHg; use prescribed antihypertensives.
• Maintain a healthy weight – BMI 18.5‑24.9.
• Adopt a Mediterranean‑style diet rich in fruits, vegetables, whole grains, fish, and olive oil; limit saturated fat and sodium.
• Engage in regular aerobic activity – at least 150 minutes of moderate‑intensity exercise per week.
• Stop smoking – use nicotine replacement or counseling programs.
• Limit alcohol – no more than one drink per day for women, two for men.
• Manage diabetes – keep A1C <7 % (or target set by your provider).
• Screen for atrial fibrillation – especially in people over 65; consider anticoagulation if AFib is confirmed.
• Take prescribed antiplatelet or anticoagulant medication exactly as directed.
• Get regular cholesterol checks and treat high LDL with statins when indicated.

Emergency Warning Signs

References

• Mayo Clinic. “Stroke.” Mayoclinic.org, 2023.
• American Heart Association/American Stroke Association. “2022 Guideline for the Early Management of Patients With Acute Ischemic Stroke.” Stroke, 2022.
• Centers for Disease Control and Prevention. “Stroke Facts.” CDC.gov, 2023.
• National Institutes of Health. “Understanding Stroke.” NIH.gov, 2022.
• World Health Organization. “Stroke: A Global Response.” WHO, 2021.
• Cleveland Clinic. “Stroke Prevention.” ClevelandClinic.org, 2023.