Renal Conditions Flashcards
Conditions in Renal for 3rd year ICSM
Define Acute Kidney Injury
Sudden episode of kidney failure / damage leading to an increased nitrate formation
What are the three different classifications of cause of AKI?
Pre-Renal
Renal
Post-Renal
What Pre-Renal causes are there of AKI?
Hypovolaemia (Haemorrhage, GI bleed)
Decreased CO
Drugs that lower BP, volume or renal flow (ACEi, ARBs, NSAIDs, Loop diruetics)
What are the Renal causes of AKI?
Toxins + Drugs (ABx, Chemo)
Vascular (Vasculitis, thrombosis)
Glomerular (Glomerulonephritis)
Tubular (Acute tubular necrosis, rhabdomyolysis)
Interstitial causes (Interstitial nephritis, lymphatic infiltration)
What are the Post-Renal causes of AKI?
Obstruction (Renal cancer, Enlarged prostate, neurogenic bladder)
What are the Risk Factors for AKI?
75+ Hx of AKI CKD Sepsis Nephrotoxic drugs Iodinated agents
What are the signs of AKI
Depends on the Cause! Decreased urinary output Jaundice Hypertension Hearing loss Pulsatile abdomen Pelvic or Renal mass
How do you stage AKI?
1 - Creatinine up by 1.5-2x, 20.5mL/kg/hour >6hrs
2- 2-3x Creatinine, <0.5mL/kg/hour in >10hrs
3- >3x base creatinine, <0.3mL/kg/hour for 12hrs
What Investigations to be done for AKI?
U&Es - Raised Creatinine, Hyperkalaemia
Urinalysis - RBC, WBC, nitrites, proteins, bacteria
FBC - Anaemia, leucocytosis, thrombocytopenia
CXR - look for HF
How do you manage AKI?
Furosemide
Bicarbonate
IV glucose and Insulin (hyperkalaemia)
Insert Catheter
If needed: Haemodialysis
In AKI, what constitutes an urgent referral
Suspect rapidly progressive glomerulonephritis
Indication for dialysis
Stage 3 or Stage 2 without improvement for 1-2 days, renal target, dialysis needed
What constitutes a non-urgent referral for AKI
Stage 2 AKI
Nephrotic syndrome
Positive ANCA/ANA
Malignant hypertension
Complications of AKI
Volume Overload Electrolyte disturbances Acid-Base disturbances Anaemia Increased infection risk
What does an ECG of someone with Hyperkalaemia look like?
Tented T waves Prolonged PR interval Wide, flat P waves Widened QRS ST depression
Define Amyloidosis
Excess amount of amyloid in the body - illness caused by excess deposition of amyloid proteins in organs
What are the classifications of amyloidosis?
Primary Amyloidosis - AL (immunoglobulin light chain) - most common, bones produce abnormal Abs that cant be broken down
Secondary - AA (Familial) and AF (non familial)
Dialysis-related - Protein in blood deposits in joints and tendons
Where do the different types of amyloidosis affect?
AL - Kidneys, Heart, nerves, gut, vasculature
AA - Kidneys, Liver, spleen
AF - Liver, nerves, heart and kidney
Dialysis - Joints + tendons
Risk Factors of amyloidosis
People of Colour 60+ Men Chronic disease Dialysis Family history
Signs and symptoms of amyloidosis
Based on organ affected:
Renal - Proteinuria, nephrotic syndrome, renal failure
Cardiac: Restrictive cardiomyopathy, HF, arrhythmia, angina
Neuro: Sensory/motor/autonomic neuropathy, carpal tunnel
Skin: Waxy, easy bruising
Joints: Painful enlargement of anterior shoulder
Investigations for amyloidosis
Serum/Urine immunofixation (monoclonal protein)
Immunoglobulin free light chain assay: Abnormal kappa:Lambda
Bloods (Checks function)
- CRP
- LFTs
- U&Es
SAP scan: Show amyloid deposits
Tissue Biopsy: Green bifringence when stained with congo red
Define Benign Prostatic hyperplasia (BPH)
A common noncancerous enlargement of the prostate
What are the causes of BPH
Hormonal changes as we age
What are the Risk Factors of BPH
Age (1/3 of people at 60, 1/2 of people at 80) Family history Diabetes Heart disease Obesity Non-Asian race Cigarrette smoking Male pattern baldness
Symptoms and Signs of BPH
LUTS Acute retention symptoms (Severe pain) Chronic retention (Painless, nocturia) Haematuria Bladder sotnes UTI
Investigations of BPH
Urinalysis (Pyuria, nitrates, bacteria, lymphocytes)
U&Es (Check renal function)
MSU (MC&S)
PSA (Raise)
Management of BPH
Catheterise in emergency Lifestyle advice (Avoid caffeine, alcohol, relax when voiding)
What is the medical management of BPH
Tamsulosin - Alpha blockers
Finasteride - 5alpha reductase inhibitors
What are the surgical managements of BPH
TURP
TUIP
Open prostatectomy
Complications of BPH
Recurrent UTI Urinary retention Urinary stasis Obstructive renal failure AKI
Prognosis of BPH
Mild symptoms can be controlled well medically
TURP has good response
What is Bladder Cancer
Malignancy of bladder cancer
- Most are transitional cell carcinomas
- Rarely squamous cell carcinomas with chronic inflammation
9th most common in world
More common in Egypt, Western Europe and North America
What are the Risk Factors of Bladder cacner
Smoking
Aromatic amines - rubber industry, dye stuff
Chronic cystitis
Cyclophosphamide treatment
Pelvic irradiation
Schistosomiasis - increased risk of squamous cell carcinomas
What are the symptoms of bladder cancer?
Blood clots / Haematuria Pain/Burning while urinating Frequent urination Urgency Nocturia Lower back pain
What are the signs of Bladder cancer
Haematuria
Nothing else
Investigations for bladder cancer
Urine dip (Blood ++) Cystoscopy (Find tumour/red patch) Biopsy Ultrasound (imaging) MRI (imaging)
Define CKD
Pathological abnormality of kidney function
What causes CKD?
Diabetes is the most common cause
Hypertension & Glomerular disorders due to causing kidney damage
Risk Factors for CKD
Diabetes Hypertension AKI history Nephrotoxic drug use Smoking Family history of Diabetes and HTN 60+ People of colour Male CVD Proteinuria Obstructed urinary flow
Staging of CKD
1 - GFR >/= to 90 2 - GFR 60-89 3a - GFR 45-59 3b - GFR 30-44 4 - GFR 15-29 5 - GFR < 15
Symptoms of CKD
Stage 1-3: Asymptomatic and found accidentally
Stage 4-5: Weight loss, anorexia, swollen ankles, SOB, Tiredness, Haematuria, Urgency, Nocturia, Insomnia, itchy skin, muscle cramps, nausea, headache, rash, dyspnoea
Investigations for CKD
Serum Creatinine
Urinalyis
Renal ultrasound (atrophy and/or hydronephrosis)
eGFR
Antibodies (ANA [SLE], c-ANCA [Wegener’s], Anti-GBM [Goodpasture’s])
Signs of CKD
Proteinuria
Haematuria
Rash
What are LUTS symptoms
FUND HIPS F - Frequency U - Urgency N - Nocturia D - Dysuria H - Hesitancy I - incomplete voiding P - Poor Stream S - Smell/odour
What is the definition of Epididymitis
Swelling / pain in the epididymis
What is the definition of Orchitis
Swelling/pain in the testicle
What are the causes of Epididymitis / Orchitis?
Acute:
In children - E. Coli
In Men - Usually an STD
Sometimes caused by: Enlarged prostate, prostatitis, blocked urethra, recurrent catheter use, amiodarone, bloodstream infections (TB)
Chronic:
After acute, often idiopathic
What are the Risk Factors for Epididymitis & Orchitis?
Frequent UTIs Bacterial Prostatitis Bacterial STD Urinary Catheterisation Unprotected sex Compromised Immunity Bladder obstruction
What are the symptoms of Epididymitis & orchitis
Swollen testis
Red, firm, tender, warm & spreads
Sources:
- Urethritis (Pain/burning w/ haematuria)
- Cystitis (lower abdo pain, urgency with burning)
- Prostatitis (Pain scratures)
- Pyelonephritis (Fever, testis pain)
Investigations of Epididymitis & Orchitis
Gram stain
Urethral swab
Doppler (Exclude torsion)
ESR/CRP - Raised
Management plan for Epididymitis & Orchitis
If Gonococcal/Chlamydial - Ceftriaxone + Doxycycline
If <14 or 35< - Ofloxacin
Complications of Epididymitis & Orchitis
Abscess + Testicular infarct, may spread
May need Epididymectomy
Define Glomerulonephritis
An immunological mediated inflammation of the Renal glomeruli and nephron
What are the early signs of Glomerulonephritis/
Puffy face
Less often urinating
Haematuria
Coughing
What are the 2 classes of Glomerulonephritis and what are the types within them?
Non-Proliferative
- Minimal change
- Focal Segmental
- Membranous
Proliferative
- IgA Nephropathy
- Membranoproliferative
- Post infectious
- Rapidly progressive (Has two types: Good Pastures and Vasculitic)
Of all the types of Glomerulonephritis, ‘Rapidly progressive’ has types, what are they?
Good pastures syndrome
Vasculitic disorders
- Wegners granulomatosis
- Microscopic polyangitis
What are the risk factors for glomerulonephritis?
Hypertension Diabetes Cancer Recent strep throat Regular NSAID use Bacterial endocarditis Viral infection
What are the investigations for Glomerulonephritis?
Urinalysis (Haematuria, Proteinuria, dysmorphic RBCs, Leucocytes, epithelial casts)
Metabolic profile (Liver enzymes, hypoalbuminaemia, FBC (anaemia)
Albumin:Creatinine ratio (>220)
Antibodies (ANA, Anti-dsDNA, ANCA, Anti-GBM anitbody)
What are the symptoms of Glomerulonephritis?
Haematuria SC oedema Polyuria or Oliguria History of recent infection Symptoms of uraemia or chronic infection
Patients with Glomerulonephritis present specific syndromes what are they?
Nephritic
Nephrotic
What is Nephrotic syndrome?
Increased permeability of the glomerulus leading to loss of proteins into the tubules - losing proteins
What are common causes of Nephrotic syndrome?
Primary:
Membranous glomerulonephritis
Minimal change disease
Mesangiocapillary glomerulonephritis
Secondary: Diabetes SLE (Class V nephritis) Amyloidosis Hepatitic B/C
What is Nephritic syndrome?
Thin glomerular basement membrance with pores that allow protein and blood into the tubule
Causes of Nephritic syndrome?
Primary:
IgA Nephropathy
Mesangiocapullary GN
Secondary: Post streptococcal Vasculitits SLE Anti-GBM disease
What are the signs of GN
Hypertension Proteinuria Haematuria (especially IgA nephropathy) Renal failure Nephrotic triad Niphritic triad
What do you see in Nephrotic syndrome on examination?
Normal/Elevated BP
Proteinuria
Normal/lowered GFR
What is the triad of Nephrotic syndrome?
Proteinuria >3.5g/24hrs
Low Serum album <24g/L
Oedema
Note: Hypoalbminaemia leads to hyperlipidaemia by liver compensation
What do you see in Nephritic syndrome on examination?
Moderate-severe raised BP
Haematuria (mild-macro)
Moderate/severe decreased GFR
What is the triad of Nephritic syndrome?
Hypertension
Proteinuria
Haematuria