Genitourinary Disorders Notes

Focus on Urinary Tract Infections (UTIs), Urolithiasis (Kidney Stones), and Renal Failure

Common Infections
- Very prevalent; urines serve as a good growth medium.
- Most UTIs are caused by Escherichia coli and majority are ascending (begin in the urethra and move upward).
- Can lead to life-threatening complications like urosepsis.
Types of UTIs
- Lower UTIs
- Cystitis: inflammation of the bladder.
- Urethritis: inflammation of the urethra.
- Upper UTIs
- Pyelonephritis: infection spreads to the kidneys, resulting in severe complications.
Risk Factors
- Women are more susceptible due to shorter urethra and proximity to the anus.
- Older men may suffer from prostatic hypertrophy leading to urine retention.
- Congenital abnormalities and bladder instrumentation can increase risk.
Symptoms of Lower UTIs
- Painful urination, frequent urges, bladder pain in women, prostate pain in men.
- Foul-smelling or cloudy urine.
Symptoms of Upper UTIs (Pyelonephritis)
- Pain is present in lower back/flank area, systemic signs like fevers.
- Dull aching pain, presence of leukocytes in urine.
Management
- Supportive care including pain management, IV fluids if sepsis is suspected.
- Transport to appropriate facilities for evaluation.

Description
- Also known as calculi; can occur anywhere in urinary tract.
- Form due to excessive solutes in urine, insufficient fluid intake, or infections.
Types of Stones
- Calcium salts, uric acid, struvite, cysteine.
- Formation associated with high calcium, alkaline urine, or hyperuricemia.
Symptoms
- Often asymptomatic until obstruction occurs; may cause flank pain, renal colic.
- Nausea, vomiting, and signs of UTI may occur if obstruction persists.
Management
- Pain relief is critical; may employ IV fluids and transport for further care.

Definition
- Accumulation of urine within the kidney due to obstruction; often asymptomatic.
Causes
- Complications from calculi, tumors, prostatic enlargement, developmental abnormalities.

Types
- Acute Kidney Injury (AKI)
- Sudden decline in kidney function; reversible if treated promptly. High mortality if untreated.
- Chronic Kidney Disease (CKD)
- Progressive loss of kidney function seen in various populations; defined stages based on GFR (Glomerular Filtration Rate).
Acute Kidney Injury
- Can be prerenal, intrinsic, or postrenal in origin.
- Prerenal involves decreased blood flow, intrinsic involves damage to kidney structures, postrenal involves urine outflow obstruction.
Management of AKI
- Supportive care for ABCs (airway, breathing, circulation). May require rapid transport to prevent complications.
Chronic Kidney Disease Stages
- Decreased Renal Reserve: Symptoms are absent, slight GFR reduction.
- Renal Insufficiency: Noticeable GFR decrease, high nitrogen waste retention.
- End-Stage Renal Failure: Very low GFR, requires dialysis or transplant.

Types
- Hemodialysis: Blood filtered through a machine; requires access points like arteriovenous fistula.
- Peritoneal Dialysis: Uses the peritoneum as a semipermeable membrane for waste extraction.
Risks & Complications
- Common complications include hypertension, fluid overload, infections, and anemia during treatment.
- Emergencies include symptomatic hypotension, hyperkalemia, air embolism, and disequilibrium syndrome.
Emergency Management
- For emergencies like hypotensive shock or air embolism, immediate transport and supportive measures are crucial.
- Monitoring for ECG changes in hyperkalemia is essential.

Understanding UTIs, urolithiasis, and renal failure is crucial for managing genitourinary disorders.
Focus on early detection, supportive care, and risk factor modification to improve outcomes and manage symptoms effectively.