Amyloidosis Month

03 Mar, 2021

Dr. Rajesh Bollam

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πŸ…5 Best Papers
πŸ’–Tips, Tricks & Thread
πŸ”΄Diagnostic delays➑️3 years from symptom onset
πŸ‘« may be evaluated > 5 specialists prior to receiving the correct diagnosis
βœ…vast majority of cardiac amyloidosis➑️transthyretin amyloidosis or light chain amyloidosis
βœ…β€œred flagβ€πŸš©suspicion for this diagnosisπŸ‘‡
πŸ’ŸECG⬇️voltage QRS amplitude limb leads (≀0.5 mV), pseudo-infarct pattern & relative⬇️voltage QRS (S wave in V1 + Rwave in V5 or V6 ≀15 mm) in the setting of LVH on #EchoFirst AV block
πŸ’ŸEcho concentric LVH, biatrial⬆️& small pericardialπŸ’¦, apical sparing of LV strain
πŸ’Ÿ#whyCMR Diffuse, subendocardial LGE. T1 mapping techniques & measurement of extracellular volumes
πŸ’Ÿ#CVnuc TTR-CA➑️91% sens & nearly 100% spec in the absence➑️monoclonal gammopathy
πŸ’ŸMajority of falseβž• tests➑️LC cardiac amyloidosis, exclusion➑️LC amyloidosis is critical
βœ…Several types of amyloidosis have been described based on the specific protein comprising the deposited fibrils
βœ…Uncommon for secondary (AA) amyloidosis
to affectπŸ«€& this is rarely seen inπŸ—ΊοΈwhere severe chronic inflammatory processes are generally well managed
πŸ”΄Clinical cardiac amyloidosis➑️extracellular deposition of proteins which have folded & aggregated such that they form amyloid fibrils
βœ…Val122IIe mutation, an hATTR subtype, is highly aggressive & therefore necessitates unique therapeutic and follow up regimens
βœ…CyBorD βž• Daratumumab works effectively
to produce responses in AL amyloidosis
🧬Genetic testing➑️critical component of the evaluation
of transthyretin amyloidosis, determining prognosis & treatment
πŸ”΅Val122Ile➑️1st common mutationπŸ‡ΊπŸ‡Έ
πŸ”΅Thr60Ala➑️2nd most common mutationπŸ‡ΊπŸ‡Έ
πŸ”΄Val30Met (pV50M)➑️most common🌏mutation outside of theπŸ‡ΊπŸ‡Έ. Endemic in πŸ‡―πŸ‡΅πŸ‡ΈπŸ‡ͺπŸ‡΅πŸ‡Ή
βœ…TTR genetic testing is recommended for all patients
with an established diagnosis of ATTR-CA regardless
of ageπŸ§’πŸ‘«πŸ‘΄πŸ§“
βœ…Once a patient carrying a pathological TTR gene
variant is identified, the predicted age of disease
onset (PADO) should be determined
πŸ”΄Recognizing a constellation of ATTR amyloidosis symptoms➑️suspicion of amyloidosis early in its course
πŸ”΄cardiac, neurologic, nephropathy or musculoskeletal manifestations
πŸ”΄ATTR amyloidosis➑️musculoskeletal manifestations 5 to 15 years prior to other symptoms
🟑Carpal tunnel syndrome🟑Trigger finger🟑Lumbar spinal stenosis
🚩trigger fingerβž•carpal tunnel syndrome reportedπŸ‡―πŸ‡΅family w/ATTRv
🟑Rupture distal biceps tendon (Popeye sign)🚩>50y
πŸ”΄ATTR amyloidosis is now a treatable disease, recognizing the constellation signs & symptoms, including those that are neurologic & musculoskeletal
πŸ”΄Early treatment will make a meaningful impact on a patient’s quality of life, autonomy, and physical function
πŸ”΄Previously considered a rare disease, CA is increasingly recognized among patients:
βœ…misdiagnosed as undifferentiated HFPEF
βœ…paradoxical low-flow/low-gradient aortic stenosis
βœ…otherwise unexplained left ventricular hypertrophy
πŸ”΄Basis for effective diagnostic & therapeutic
management of CA patients➑️early recognition and
suspicion of possible cases based on clinical red flags,
cardiac imaging, and biomarkers

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