Conference Notes 1/8/2024

  • Nephritis/Nephrosis – Dr. Samuels
    • Nephritic vs Nephrotic
      • Nephritic Syndromes
        • Hypertension
        • Decreased Urine Output
        • Proteinuria +/-
        • RBC casts
        • Examples:
          • PSGN
          • Rapidly Progressive Glomerulonephritis
          • IgA Nephropathy
      • Nephrotic
        • >3.5 grams protein excreted per 24h
        • Hypoalbuminemia >lipid formation
        • Edema/anasarca
        • Hypercoagulable state (loss of antithrombin III, protein C & S)
        • Examples:
          • FSGS (focal segmental glomerulosclerosis)
          • Membranous Nephropathy
          • Diabetic Nephropathy
  • Urinary Infections – Dr. Stanforth
    • Urinary Tract Infections
      • Pathophys
        • Bacteria ascend through the urethra
        • Complicated vs uncomplicated
        • Relapse = recurrence of symptoms within 1 month despite treatment (typically same organism)
        • Reinfection = symptoms develop 1-6 months after treatment (typically different organs mim)
      • Risk factors
        • Anatomical abnormalities
        • Advanced age (men)
        • Nursing home residency
        • Neonatal
        • Diabetes, sickle cell disease
        • Pregnancy
        • Immunosuppression
        • Advanced neurologic disease
      • General workup
        • UA
          • WBC >5 w/ symptoms is diagnostic
        • Urine culture
        • Consider labs: CBC, CMP, lactic
        • Blood cultures not always indicated as cultured organsmi will typically match urine culture (97%)
      • Types
        • Renal
          • Pyelonephritis
            • Flank pain, fevers, chills, nausea, vomiting
              • CVA tenderness alone could be referred pain from cystitis
            • Complications
              • Bacterial Nephritis
              • Renal/perinephric abscess
              • Emphysematous pyelonephritis
        • Ureteral
          • Infected stone (8-15% of stones have co-infection)
          • Systemic symptoms: urology consult, close follow-up
          • Obstruction with infectious symptoms -> urologic emergency
          • Imaging considerations
        • Cystitis
          • Infection of bladder
          • Complicated
            • Symptoms >7 days
            • DM
            • UTI in previous 4 weeks
            • Men
            • > 65years old
            • Women using spermicides or diaphragm
            • Relapse
            • Pregnancy
          • Treatment
            • Refer to system/community based antibiogram
        • Urethritis
          • UA, Urine GC/Chlamydia, M. genitalium and trichomonas testing
          • Treatment: Empirically cover gonorrhea and chlamydia
          • Partner treatment
        • Prostatitis
          • E. coli makes up about 80% of cases
          • Enterococcus, Staph. N. gonorrhoeae, Chlamydia
          • Prostate manipulation: increased risk of pseudomonas infections
        • Management:
          • Prolonged antibiotic course
      • Asymptomatic bacteriuria
        • Do not treat unless immunocompromised or pregnant
  • PEM: Renal Disorders – Dr. Lund
    • Pediatric Renal/GU
      • UTI
      • UTI: Diagnosis
        • Culture showing leukocyte esterase or pyuria AND …
          • 1,000 CFU SPA
          • 50,000 CFU catheterized specimen
          • 100,000 CFU clean catch
        • 2-24 months first febrile UTI or recurrent UTI in older child needs RBUS
      • UTI: Treatment
    • PIGN
      • One of the most common causes of acute glomerulonephritis in children
      • PSGN: Clinical features
        • M>F
        • 4-14 y/o, rare before 2 y/o
        • Latency 1-2 weeks for pharyngeal infections and 3-5mfor skin infection
      • Acute nephritic syndrome
        • Hematuria
        • Hypertension
        • Edema
        • Oliguria
      • PSGN: Treatment
        • Treat underlying infection
        • Treat nephritic syndrome, if needed
          • Diuretics
          • Antihypertensives
          • RRT
    • Hemolytic Uremic Syndrome
      • Triad of microangiopathic hemolytic anemia, thrombocytopenia and acute kidney injury
      • Many etiologies with most common being shiga-toxin producing E. coli (STEC)
      • Treatment
        • pRBC
        • Fluid/electrolyte anagment
        • Dialysis
        • Platelets
    • Henoch Schonlein purpura
      • IgA depositions in blood vessel walls – kidneys, GI tract, skin, joints
      • Clinical manifestation
        • Palpable purpura
        • Joint pain
        • GI complaints
        • Renal involvement
        • Cerebral vasculitis
        • Testicular hemorrhage
        • Interstitial pulmonary  hemorrhage
      • Pathogenesis
        • Preceding URI
        • IgA complexes deposit in the small vessels in the skin joints, kidneys and GI tract. 
      • Diagnosis
        • Mandatory criterium:
          • Purpura or petechiae with lower limb predominance
        • Minimum Criteria(1 of 4)
          • Diffuse abdominal pain with acute onset
          • Arthritis or arthralgia of acute onesie
          • Renal involvement in the form of proteinuria or hematuria
          • Histopathology showing leukocytoclastic vasculitis or proliferative glomerulonephritis, with predominant immunoglobulin A deposits
      • Treatment
        • Non renal involvement -> symptomatic treatment
        • No consensus on HSP nephritis/severe complications
          • Steroids
          • Cyclosporine, mycophenolate, cyclophosphamide, rituximab, dapsone 
      • Approach to Hematuria
        • Pathophysiology
          • Glomerular
            • Disruption of the glomerular basement membrane with leakage of RBS and protein
            • RBC casts 
            • Brown, smoky coca-cola colored
          • Non-glomerular
            • Renal papillae
            • Sickle cell disease, trait
            • Tubules are site inflammation caused by NSAIDs and antibiotics
            • Pink, bright red with ot without clots more likely lower in urinary tract
            • Increased vascularity from infection or chemical irritation
        • Evaluation
          • Confirm blood in urine
          • Detailed patient and family history
          • Life Threatening causes
            • Trauma
            • Acute glomerulonephritis
            • HUS
            • Renal stones with obstruction
            • Tumor
            • Hematologic disorders
            • toxin/xenobiotic
        • Trauma
          • Hematuria is “cardinal marker of renal injury, with magnitude of hematuria paralleling the severity of renal injury (except renal pedicle injuries, which may have no associated hematuria
          • Presence of gross hematuria or significant microscopic hematuria (>50 RBCs/HPF) along with mechanism point to emergent imaging
  • Testicular Infections/STI – Dr. Scott
    • Sexually Transmitted Infections
      • Ulcerative
        • Painful Ulcers
          • HSV
            • HSV-2
              • Multiple painful lesions
              • Starts as blisters
              • Clinical Dx
              • Acyclovir 400 mg q8h x7-10 days or valacyclovir 1 g q12h x 7-10 days
          • Chancroid
            • H. ducreyi
            • Begins as chancre -> unilateral painful inguinal lymphadenopathy forms (buboes)
            • Can form abscess
            • Azithro 1 g PO x1 dose
        • Painless
          • Syphilis
            • Chancre painless
            • Secondary
              • Maculopapular ras on trunk and extremities
              • CSF involvement (40%) 
            • Late
              • Most commonly neuro, associated with HIV
              • Gummas
              • Cardiovascular
            • Diagnosis
              • RPR or VDRL -> antibody if reactive
              • Antibody test -> RPR or VDRL
            • Tx:
              • Penicillins
              • Doxycycline
              • Ceftriaxone if neurosyphilis
              • Jarish-Herxmeier reaction: fever. Chills, myalgias, headache
          • LGV
            • Chlamydia trachomatis
            • Associated with HIV
            • Primary: painless ulcer x2-3 days
            • Secondary: painful ulcer 2*6 weeks later
              • Fever, mylagia, malaise
          • Gonorrhea chlamydia/chlamydia
            • Arthritic, PID
            • Urine culture
            • Ceftriaxone/doxy
          • Epididymitis
            • <35, GC/chlamydia
            • >35 (or anal intercours): e. Coli, pseudomanas, TB, enterovacrer, syph
              • Scrotal elevation
              • Pain relief
              • GC/Chlamydia treatment
          • Orchitis
            • Testes inflammation
            • Most commonly mumps
            • GC, chlamydia, E. coli
  • Torsion – Dr. Gosser
    • Ovarian torsion
      • Most common in reproductive-aged females but is found in females of any age
      • Risk factors
        • Ovary > 4cm
        • Pregnancy
        • Patients undergoing IVF, patients after tubal ligation
      • Mechanism: enlarged ovary rotates on the axis of its ligaments leading to twisting of the ligaments restricting lymphatic outflow, swelling that will inhibit venous return that in-turn compromises arterial blood flow. 
      • Requires emergent OB/Gyn consult for operative management
    • Testicular torsion
      • Bimodal incidence
        • Peaks in first year of life and in puberty
      • Risk Factors
        • Mechanical: exertional/exercise, trauma
        • Testicular masses
        • Undescended testicle
        • Bell-clapper deformity
      • Evaluation
        • Emergent urology consult
        • UA
        • US for equivocal cases
        • TWIST Score
      • Mechanism
        • Twisting of the testis on its blood supply
        • Tunica vaginalis is secured to the scrotal wall on the posterolateral side, prevents movement of the testis
          • If this attachment occurs too superiorly, this can lead to torsion
      • Treatment
        • Manual detorsion (temporizing measure)
          • Medial to lateral rotation (open book)
        • Urological consultation for detorsion and orchipexy
        • Salvage rates
          • 100% at 6 hours
          • 20% at 12 hours
          • Little to no salvageability at >24 hours
  • ITE Tox Review – Dr. Eisenstat
    • Toxicology ITE Prep
      • self-review
  • Renal Emergencies – Dr. Thomas
    • Hyperkalemia and Emergent Hemodialysis
      • Causes of hyperkalemia
        • The Kidney
          • Renal insufficiency
          • ARF
          • Addison’s Disease, Adrenal insufficiency
          • ACEs
          • ARBs
        • Intake
          • Excessive K+ supplementation
          • Excessive K+ in diet
          • Dehydration
            • Prerenal cause of insufficiency
            • Causes shift in electrolytes with more K+ now extracellular
        • Tissue Damage
        • Endocrine
        • The Lab/Phlebotomy
      • Hyperkalemia
        • Generally >5 or 5.5
        • The serum concentration of K+ is important
        • The rate of change in the concentration of serum K+ is MORE important
        • EKG changes
          • Mild 5.5-6.5  – Peaked T Waves and or Prolonged PR segment
          • Moderate 6.5-8 – Loss of P Wave, Prolonged QRS complex, ST-Segment elevation, Ectopic beats
          • Severe >8.0 – Progressive widening of the QRS, Sine wave morphology, V-fib, Asystole, axis deviations, BBB, Fascicular blocks
      • Therapy
        • Calcium
        • Insulin/dextrose
        • Albuterol
        • Bicarb
          • Only really worthy of consideration in setting of metabolic acidosis
        • Diuretics
        • GI elimination
          • NOT RAPID
          • NOT FOR EMERGENCY TREATMENT
        • Hemodialysis
      • Emergent Hemodialysis
        • AEIOU
          • Acidosis
            • pH ,7.1
          • Electrolytes
            • Refractory hyperkalemia
          • Intoxication/Ingestions
            • Toxic alcohols, salicylates, lithium, etc
          • Overload
            • Congestive Heart Failure
          • Uremia
            • Uremic pericarditis, uremic encephalopathy
        • I STUMBLED (Toxins removed by HD)
          • I – INH, Isopropyl alcohol
          • S – Salicylates
          • T – Theophylline, Tenormin (atenolol)
          • U – Uremia
          • M – Methanol
          • B – Barbiturates
          • L – Lithium
          • E – Ethylene glycol
          • D – Dabigatran, Depakote