What is ckd disease

Understanding CKD Disease

CKD disease, officially known as Chronic Kidney Disease, is a long-term condition in which the kidneys gradually lose their ability to filter waste products and excess water from the blood. The filtered waste becomes urine, which is stored in the bladder and eventually eliminated from the body. When the kidneys are damaged, waste accumulates in the blood, leading to health problems. CKD is defined by a glomerular filtration rate (eGFR) of less than 60 mL/min/1.73 m² or the presence of kidney damage persisting for three months or longer.

Primary Causes of CKD

Diabetes is the leading cause of CKD, accounting for approximately 35-40% of cases. High blood sugar damages the small blood vessels in the kidneys over time, reducing their filtering ability. High blood pressure (hypertension) is the second leading cause, responsible for 25-30% of CKD cases. Hypertension damages the delicate blood vessels in the kidneys, impairing their function. Other significant causes include glomerulonephritis (inflammation of kidney structures), polycystic kidney disease (inherited disorder), recurrent kidney infections (pyelonephritis), urinary tract obstructions, and prolonged use of certain medications like NSAIDs.

Five Stages of CKD Disease

CKD progresses through five distinct stages based on kidney function measured by eGFR:

• Stage 1: eGFR ≥ 90 with kidney damage but normal function; person typically feels fine
• Stage 2: eGFR 60-89 with mild loss of kidney function; still often asymptomatic
• Stage 3a: eGFR 45-59 with mild to moderate loss of kidney function; gradual symptom development
• Stage 3b: eGFR 30-44 with moderate to severe loss of kidney function; symptoms often appear
• Stage 4: eGFR 15-29 with severe loss of kidney function; urgent management needed
• Stage 5: eGFR < 15 or on dialysis representing end-stage renal disease (ESRD); kidney failure

Symptoms and Progression

Many people in early CKD stages (1-3) have no symptoms and don't realize they have the disease. This is why CKD is often called a silent disease. As CKD progresses to later stages, symptoms may include fatigue and weakness, shortness of breath, swelling in the legs and ankles, persistent itching, poor appetite, nausea and vomiting, and difficulty concentrating. The disease can progress at different rates depending on the cause, overall health, genetics, and how well the underlying conditions are managed.

Complications of CKD Disease

Advanced CKD leads to multiple serious complications. Anemia develops when kidneys fail to produce enough erythropoietin, reducing red blood cell production. Bone disease occurs as kidneys lose ability to regulate calcium and phosphorus. Cardiovascular disease is the leading cause of death in CKD patients due to increased heart and stroke risk. High blood pressure worsens as kidney function declines. Electrolyte imbalances and fluid retention develop, potentially causing dangerous heart rhythms.

Management and Treatment Options

Management focuses on slowing CKD progression and preventing complications. Blood pressure control is the most critical intervention, typically using ACE inhibitors or ARB medications. Diabetes management through blood sugar control is essential for diabetic CKD patients. Treatment may include medications for anemia, bone disease, cholesterol, and blood pressure. Lifestyle modifications include reducing salt and protein intake, maintaining healthy weight, limiting fluid intake in advanced stages, avoiding NSAIDs, and regular exercise. In Stage 5 CKD, patients require either dialysis (artificial kidney machine) or kidney transplantation to survive.