Pathology 1 Flashcards
Is glomerulonepritis or pyelonephritis infective?
Pyelonephritis - bacterial infection
What is glomerulonephritis?
Group of renal conditions that are usually characterised by inflammation either of the glomeruli or small blood vessels in the kidneys
What is pyelonephritis?
Bacterial infection of the renal eliv, calyces. tubules and interstitium
Acute or chronic (more common)
What is the most common infecting organism of pyelonephritis?
E. coli
What other organisms can cause pyelonephritis?
Pseudomonas
Strep. Faecalis
Give the risk factors for pyelonephritis?
Female Pregancy - ureteric dilation Imstrumentation or surgery urinary tract obstruction Vesico-ureteric reflux (VUR) Diabetes
What can cause urinary tract obstruction?
Calculus Stricture Neoplasm Congenital anomaly - duplex systems, posterior urethral valves Prostatic disease (BPH) Uretheral pathology
What is Vesico-ureteric reflux (VUR)?
Incompetence of uretero-vsical valves - ureter enters bladder more perpendicularly
congenital or acquired
What can conribute to chronic pyelonephritis?
Hypertensio
Uraemia
Do patients with chronic pyelonephritis produce large volumes of urine?
Yes - can’t concentrate urine as nephrons don’t work
What is the spread of TB to cause tuberculus pyelonephritis?
Haematogenous spread usually from the lung
What oraganisms can cause cystitis?
E. coli
Klebseilla
Proteus
Pseudomonas
What is cystitis?
Lower urinary tract infection
acute inflammation but can become necrotizing if associated with outlet obtruction (prostatic disease in males)
What organism causes Schistosomiasis?
S. Haematobium
What does chronic Schistosomiasis predispose a pateint to?
Urothelial maligancy - esp. squamous carcinoma
What is hydronephrosis?
Water inside the kidney
urine back pressure into the calyces compresses the nephrons within the medullary pyramids leading to renal failure