Cases (Day 1) Flashcards
What is your first step?
- pamidronate 30mg IV over 6 hrs
- IV NS bolus + 150cc/hr
- furosemide 40mg IV
- Denosumab
- Calcitonin
What is the mostly cause of hyperCa?
- primary HPTH
- secondary HPTH
- malignancy
- Vit D intoxication
- fluids
- Malignancy
- seen in SCC head, neck, lung (MCC), esophagus
- breast
- RCC
- lymphoma/myeloma
How is calcium reabsorbed?
What is the effect of loop diuretics?
What is the drug of choice/Level I evidence supported medication for hyperCa of malignancy?
Bisphosphonates - high affinity for hydroxyapatite, inhibit resorption/bone turnover
- more potent: zoledronate, pamidronate, ibandronate - higher rate of Ca normalization and lower rate of relapse
What is a useful adjunct with bisphosphonates in rapidly reducing calcium?
Calcitonin - inhibits osteoclasts
- rapid, short half-life
- tachyphylaxis around 48hrs
4-8IU/kg IM/SQ q6 hrs
Which hyperCa therapy doesn’t require dose adjustment for low GFR?
Denosumab - RANKL-Ab, inhibits rank-l mediated resorption
*can cause hypoCa if Vit D not replete
Review of tx of HyperCa of malignancy
What’s the dx?
- Light chain nephropathy (MM)
- acute uric acid nephropathy (TLS)
- acute nephrocalcinosis (Ca/phos dep)
- Acute granulomatous interstitial nephritis from NSAIDS
- acute infiltrating nephritis from lymphoma
fractured glassy casts
Pathology review
Prior to chemo, which should be administered?
- HD
- Urine alkalization
- glucose/insulin
- IV Calcium
- IV Fluid challenge
Flip for treatment of TLS
Which of the following labs explain his lab abnormalities?
- aldo
- cortisol
- ACTH
- TSH
- glucagon
Pathophysiology of HTN, HypoK, Met. Alkalosis in Small Cell lung CA (flip)
Kidney US with 18cm size bilaterally.
What is the most likely cause of AKI?
- obstructive uropathy
- AIN
- lymphomatous infiltration
- MN 2ndary to neoplasm
- renal vein thrombosis
Renal lymphoma
- enlarged on US/CT
- RP can cause obstruction or masses in kidney
What is the most likely cause of this condition?
- cisplatin induced renal salt wasting
- SIADH
- Bleomycin induced renal salt wasting
- Paclitaxel autonomic neuropathy
Cisplatin
- dose-related nephrotoxicity (primarily tubular) and ototoxicity
How can you prevent/treat Cisplatin-AKI/tubulopathy?
IV NS or 3% for forced diuresis
Amifostine (glutathione analog)
change to carbo/oxaplatin (don’t use OCT-2)
Na-thiosulfate
What is the likely cause of her electrolytes disorder?
- Paclitaxel toxicity
- 2ndary hyperaldo
- stimulation of FGF23 by tumor
- Ifosfamide toxicity
- obstructive uropathy
Ifosfamide
vs. cyclophosphamide - hemorrhagic cystitis
- toxic metabolite of ifos is chloroacetaldehyde = causes problem in PCT
causes fanconi/neph DI, AKI/ATN
Tx: dose reduction/supportive care
What is the cause of kidney disease?
- naproxen
- breast cancer
- pamidronate
- gemcitabine
- paclitaxel
Pamidronate - seen in long term, high doses
- AKI with nephrotic syndrome, collapsing FSGS and chronic tubulointerstitial disease
Zolendronate - after several doses, AKI/ATN
- CI if eGFR <30
What is the most likely cause of hypoMg?
- irinotecan
- oxaliplatin
- cetuximab
- pantoprazole
- leucovorin
Cetuximab
- PPI cause GI Mg wasting, not renal
- EGFR inhibitor to treat epithelial cell malignancies (colorectal, head and neck, breast, lung)
Panitumumab also (cousin)
What is the likely lesion seen in this patient?
- TMA
- FSGS
- crystalline-induced tubular injury
- AIN
- ATI/ATN
Immune checkpoint AIN
- CTLA-4 blockers and PD-L1 Ab
Other pathologies associated with immune checkpoint inhibitors
<4% from ICPI induced AKI
usually AIN, can be GN/vasculitis
- no labs helpful, needs biopsy
- can be steroid responsive
- re-challenge reasonable with close monitoring (23% recurrence)
Other pathologies associated with immune checkpoint inhibitors
<4% from ICPI induced AKI
usually AIN, can be GN/vasculitis
- no labs helpful, needs biopsy
- can be steroid responsive
- re-challenge reasonable with close monitoring (23% recurrence)
UA: SG-1.018, pH 6, protein 1+, blood 3+, gluc neg, LE trace
Hb 10, WBC 8.7 w/ 3% eos
What is present on urine micro?
- dysmorphic RBC
- budding yeast
- renal tubular epithelial cells
- isomorphine RBCs
- WBC
What is the most likely diagnosis?
- IgA
- AIN
- bladder cancer
- ATN
- acute pyelonephritis
see next question in order
Lytes: ok, alb 3.2
BUN 75, Cr 4.9
WBC 18/5, eos. 5%
UA: SG 1.010, pH 5.5, prot 2+, gluc 1+, blood neg, LE, neg
What is the cell on urine micro?
Based on type of cell, what is the diagnosis?
- TMA
- ATI/ATN
- AIN
- HCV GN
- Uroepithelial cancer
see next question in order
single nucleus
What on the urine micro?
What’s the diagnosis?
- pre-renal AKI from SGLT2
- ATI/ATN
- AIN
- UTI
- progressive DKD
see next question in order
Whats seen on microscopy?
What is the Dx?
see next question in order
What’s the cell on micrscopy?
What is the diagnosis?
- renal limited anti-GBM
- ATI/ATN
- AIN
- IgA vasculitis
- candida pyelonephritis
see next question in order