Nephrology, Fluid–Electrolyte Disorders, Acid–Base Balance, and Urological Medicine
Updated: Aug 23
| Cerebral Link | Publish by Cerebral Publication Private Limited | 2026 | Volume 2 | Page 92-114 | ISBN: 978-81-689463-2-3 | Book Title: - Textbook of Modern General Medicine | Chapter-5: Nephrology, Fluid–Electrolyte Disorders, Acid–Base Balance, and Urological Medicine
Abstract
Renal and urological disorders constitute an important component of general medicine because of their substantial contribution to acute illness, chronic disease, hospitalization, and long-term morbidity. This chapter provides a comprehensive overview of the fundamental principles of nephrology, fluid and electrolyte disorders, acid–base balance, and urological medicine, emphasizing systematic clinical assessment, appropriate diagnostic evaluation, evidence-based management, and prevention of complications. Major renal disorders discussed include acute kidney injury, chronic kidney disease, glomerular diseases, nephrotic and nephritic syndromes, tubulointerstitial disorders, diabetic kidney disease, hypertensive nephropathy, and hereditary renal conditions. Particular attention is given to assessment of renal function through serum creatinine, estimated glomerular filtration rate, urinalysis, urinary protein assessment, imaging, and other specialized investigations.
Fluid and electrolyte disturbances, including abnormalities of sodium, potassium, calcium, magnesium, and body water balance, are reviewed with emphasis on underlying mechanisms, clinical manifestations, diagnostic interpretation, and safe correction strategies. Acid–base disorders are approached systematically through arterial or venous blood gas interpretation, bicarbonate levels, anion gap assessment, and recognition of metabolic and respiratory acidosis and alkalosis, including mixed disturbances. Principles of renal replacement therapy, including hemodialysis, peritoneal dialysis, and indications for urgent dialysis, are also considered.
The urological section addresses urinary tract infections, urolithiasis, urinary obstruction, lower urinary tract symptoms, benign prostatic enlargement, hematuria, urinary incontinence, and selected urological malignancies and emergencies. Integration of clinical findings with laboratory investigations and appropriate imaging facilitates early diagnosis and timely intervention. Preventive strategies, medication safety, appropriate fluid management, cardiovascular risk reduction, and multidisciplinary care are emphasized throughout. A structured and patient-centered approach to renal, electrolyte, acid–base, and urological disorders is essential for preserving kidney function, preventing complications, and improving overall clinical outcomes.
Keywords: Nephrology; Acute Kidney Injury; Chronic Kidney Disease; Electrolyte Disorders; Acid–Base Balance; Renal Replacement Therapy; Urology; Urolithiasis; Urinary Tract Disorders
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