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Acute kidney injury (AKI) occurs when the kidneys suddenly lose their ability to filter waste products from the blood. As wastes and fluids build up, the body’s chemical balance can become dangerously disrupted. AKI was previously called acute kidney failure and is most common in hospitalized patients, especially those in intensive care. AKI can range from mild to severe. In serious or untreated cases, it can be life-threatening. However, when identified early and managed properly, AKI is often reversible, and many people—especially those who were previously healthy—can recover normal or near-normal kidney function. Symptoms AKI may cause: Reduced urine output Fluid buildup leading to swelling of legs, ankles or feet, and shortness of breath Fatigue and weakness Confusion or mental fog Nausea or loss of appetite Pain in the abdomen or side below the ribs Irregular heartbeat Itching Chest pain or pressure Seizures or coma in severe cases Sometimes AKI causes no noticeable symptoms and is discovered through routine blood tests. When to see a doctor Seek medical attention immediately if you have symptoms suggestive of acute kidney injury. Early diagnosis and treatment are critical to prevent serious complications.

What is an ischaemic stroke? An ischaemic stroke, also called a cerebral infarction, happens when a blood clot or other obstruction blocks an artery supplying blood to the brain. This blockage sharply reduces blood flow, depriving brain tissue of oxygen and nutrients. Without oxygen, brain cells begin to die within minutes. Ischaemic strokes are the most common type of stroke, accounting for around 80% of all cases, and they are a medical emergency. Rapid treatment is critical to limit brain damage, disability, and life-threatening complications. Types of ischaemic stroke 1. Thrombotic stroke Caused by a blood clot (thrombus) that forms directly in an artery supplying the brain Commonly linked to atherosclerosis, where fatty plaques narrow the arteries Often develops during sleep or rest 2. Embolic stroke Occurs when a clot forms elsewhere in the body, most often in the heart The clot travels through the bloodstream and becomes lodged in a brain artery Frequently associated with atrial fibrillation, heart valve disease, or recent heart attack 3. Lacunar stroke Involves blockage of small, deep arteries within the brain Usually caused by long-standing high blood pressure leading to thickened vessel walls Can also be linked to diabetes or rare genetic conditions Symptoms of an ischaemic stroke Symptoms depend on which area of the brain is affected, but commonly include: Sudden numbness or weakness, especially on one side of the face, arm, or leg Sudden difficulty speaking or understanding speech Sudden vision problems in one or both eyes Sudden dizziness, loss of balance, or difficulty walking Sudden severe headache with no known cause When to seek emergency medical attention – ACT FAST Call emergency services immediately if you notice: F – Face drooping when smiling A – Arm weakness when raising one or both arms S – Speech difficulty or slurred speech T – Time to call emergency services Early treatment can be lifesaving and can significantly reduce long-term disability. What causes an ischaemic stroke? Several conditions can lead to artery blockage, including: Atherosclerosis (plaque build-up in arteries) Blood clots from the heart, often due to atrial fibrillation or heart valve disease High blood pressure, which damages and narrows blood vessels Carotid artery disease, causing reduced blood flow to the brain Blood disorders, such as sickle cell disease or clotting abnormalities Inflammatory or genetic blood vessel diseases Complications and related conditions An ischaemic stroke can cause long-term or permanent complications, such as: Paralysis or weakness, usually on one side of the body Speech and swallowing difficulties (dysphagia) Memory, concentration, and cognitive problems Chronic pain, numbness, or abnormal sensations Depression, anxiety, and emotional changes Secondary issues including pneumonia, pressure sores, or deep vein thrombosis due to reduced mobility How can ischaemic strokes be prevented? Prevention focuses on controlling risk factors and maintaining vascular health: Control blood pressure, diabetes, and cholesterol Eat a balanced, heart-healthy diet low in saturated fat and salt Exercise regularly Stop smoking and limit alcohol intake Take prescribed medications for heart rhythm disorders or clot prevention Attend regular health check-ups to monitor stroke risk factors