8.3 Kidney Failure, Dialysis, and Kidney Transplant

Kidney Failure:

• Kidney failure occurs gradually due to diseases like nephritis, diabetes, hypertension (high blood pressure), kidney stones, and certain medications.

• Sudden kidney failure can result from severe diarrhea, excessive blood loss, or other causes.

• Symptoms of kidney failure include difficulty urinating and increased creatinine levels in the blood.

Dialysis:

• Definition: Dialysis is a medical procedure used to filter harmful waste products from the blood when the kidneys are damaged or inactive.

• Process:

• The dialysis machine is used to purify the blood.

• A dialysis tube is inserted into the artery and vein of the patient’s wrist.

• Blood flows from the artery through the dialysis tube, which is semi-permeable.

• Waste substances like urea and uric acid pass through the membrane and are removed.

• The purified blood returns to the body through the vein.

• The dialysis tube is submerged in a liquid similar to blood plasma, aiding the removal of nitrogenous waste.

• Limitations: Dialysis is expensive, time-consuming, and typically required periodically.

Kidney Transplant:

• Definition: Kidney transplantation is the process of replacing damaged or inactive kidneys with a healthy kidney from another person.

• Types of Kidney Donation:

1. Live Donation: A kidney can be taken from a close relative (e.g., parent, sibling, uncle, or aunt).

2. Posthumous Donation: A kidney can be taken from a brain-dead person, where the organs are artificially kept alive.

• Matching: Before transplantation, tissue matching is necessary. The likelihood of a match is higher with close relatives.

• Legal and Ethical Issues: In some countries, legal complications prevent non-relatives from donating kidneys, depriving patients of a potential life-saving organ.

• Survival with One Kidney: A person can live with just one kidney, making kidney transplantation a viable solution for kidney failure.

Kidney Failure Treatment:

• Kidney transplantations have proven successful in treating kidney failure, providing millions of patients with healthy lives.

Urinary Tract Health:

• Urinary Tract Diseases: Poor health habits and inadequate water intake can cause urinary tract infections or diseases in the ureter.

• Infections: Ureter infections lead to burning sensations and other symptoms, but with proper treatment, most patients recover fully.

Water Intake Recommendations:

• Historical Advice: It was once believed that everyone should drink eight glasses of water daily, but modern research shows that water intake needs vary based on factors like gender, physical activity, illness, and climate.

• Hydration: Excessive water intake should be avoided unless necessary. Drink water according to thirst, not based on a fixed recommendation.

Saline Intake Precautions:

• Misuse of Saline: Many people drink saline when tired, sweating, or without any reason, which can be harmful, especially for the elderly.

• Proper Hydration: If you’re dehydrated due to diarrhea or vomiting, take the prescribed amount of saline as suggested by a doctor. For simple tiredness or sweating, water with lemon juice and a pinch of salt is sufficient. Sugar may be added for non-diabetic individuals.

Precautions for Kidney Health:

• Prevent Kidney Disease: Avoid tonsillitis and scabies in children, as they may contribute to kidney disease.

• Control Hypertension and Diabetes: Keep high blood pressure and diabetes in check.

• Prevent Kidney Failure: Immediate treatment for diarrhea, blood loss, smoking cessation, and avoiding pain-relieving medications that may harm kidney function.

• Hydration and Healthy Lifestyle: Drinking enough water and leading a healthy lifestyle is essential for maintaining kidney health.