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{{Multiple myeloma}}
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==Overview==
There are two indications for obtaining an electrocardiogram in the workup and management of multiple myeloma: carfilzomib use and evaluation of cardiac amyloidosis. In both of these situations, a baseline electrocardiogram may be useful. Subsequent electrocardiograms may be useful for monitoring. Electrocardiogram abnormalities include atrioventricular block and low voltage QRS complexes.
==Electrocardiogram==
There are two indications for obtaining an [[electrocardiogram]] in the workup and management of [[multiple myeloma]]:
*'''Use of [[carfilzomib]]''': [[Carfilzomib]] is a second-generation [[proteasome inhibitor]] that is used in previously treated [[multiple myeloma]]. This medication is usually given along with either [[dexamethasone]] or the combination of [[lenalidomide]] plus [[dexamethasone]]. [[Carfilzomib]] is known to cause [[cardiomyopathy]] and [[cardiac]] [[toxicity]]. [[Electrocardiogram]] is indicated if [[cardiomyopathy]] ensues. A baseline [[electrocardiogram]] may also be useful prior to the start of [[carfilzomib]].<ref name="pmid25471129">{{cite journal| author=Chari A, Hajje D| title=Case series discussion of cardiac and vascular events following carfilzomib treatment: possible mechanism, screening, and monitoring. | journal=BMC Cancer | year= 2014 | volume= 14 | issue=  | pages= 915 | pmid=25471129 | doi=10.1186/1471-2407-14-915 | pmc=4289164 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25471129  }} </ref>
*'''Evaluation of [[cardiac amyloidosis]]''': In some cases of [[multiple myeloma]], there can be concurrent [[amyloidosis]], which refers to systemic deposition of abnormally folded [[proteins]] called [[amyloid]]. Amyloid usually consists of ''lambda'' [[Light chain|light chains,]] and [[amyloid]] can deposit in the [[cardiac]] [[tissue]] if there is excess free [[light chain]] production. [[Cardiac arrhythmias]] can occur if [[amyloid]] fibrils deposit in the electrical conduction system. This can result in low amplitude [[QRS complexes]] and [[heart block]]. Severe [[cardiac amyloidosis]] can cause significant infiltrative [[heart]] disease such that a high-degree [[atrioventricular block]] ensues. These changes can be detected readily on [[electrocardiogram]]. In some cases, serial [[electrocardiograms]] need to be done for routine [[Heart|cardiac]] monitoring.<ref name="pmid22058156">{{cite journal| author=Guan J, Mishra S, Falk RH, Liao R| title=Current perspectives on cardiac amyloidosis. | journal=Am J Physiol Heart Circ Physiol | year= 2012 | volume= 302 | issue= 3 | pages= H544-52 | pmid=22058156 | doi=10.1152/ajpheart.00815.2011 | pmc=3353775 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22058156  }} </ref>
==References==
{{Reflist|2}}
[[Category:Medicine]]
[[Category:Hematology]]
[[Category:Neurology]]
[[Category:Neurosurgery]]
[[Category:Oncology]]
[[Category:Up-To-Date]]
[[Category:Surgery]]

Latest revision as of 22:46, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Hannan Javed, M.D.[2]; Shyam Patel [3]

Overview

There are two indications for obtaining an electrocardiogram in the workup and management of multiple myeloma: carfilzomib use and evaluation of cardiac amyloidosis. In both of these situations, a baseline electrocardiogram may be useful. Subsequent electrocardiograms may be useful for monitoring. Electrocardiogram abnormalities include atrioventricular block and low voltage QRS complexes.

Electrocardiogram

There are two indications for obtaining an electrocardiogram in the workup and management of multiple myeloma:

References

  1. Chari A, Hajje D (2014). "Case series discussion of cardiac and vascular events following carfilzomib treatment: possible mechanism, screening, and monitoring". BMC Cancer. 14: 915. doi:10.1186/1471-2407-14-915. PMC 4289164. PMID 25471129.
  2. Guan J, Mishra S, Falk RH, Liao R (2012). "Current perspectives on cardiac amyloidosis". Am J Physiol Heart Circ Physiol. 302 (3): H544–52. doi:10.1152/ajpheart.00815.2011. PMC 3353775. PMID 22058156.