from Section II - Clinical epidemiology and risk factors
Published online by Cambridge University Press: 05 May 2010
Introduction
Cardiac diseases can be relevant to stroke in different respects:
In embolic stroke, cardiac diseases may be the cause of embolism, such as atrial fibrillation (AF), endocarditis, left ventricular aneurysm or left ventricular hypertrabeculation/non-compaction (LVHT).
Brady- and tachyarrhythmias may compromise cerebral blood flow.
Cardiac diseases may coexist, and influence the clinical course and rehabilitation, such as coronary heart disease or dilatative cardiomyopathy (dCMP).
In some instances, cardiac diseases may be the consequence of the stroke, such as stroke-induced transient left ventricular dysfunction, also referred to as Takotsubo syndrome (TTS).
Congenital abnormalities such as patent foramen ovale (PFO) or atrial septal aneurysm (ASA) may implicate paradoxical embolism.
Several diseases may coexist in a single patient, such as coronary heart disease and AF. Thus, from a pragmatic point of view, this chapter aims to focus on the most frequent and controversially discussed cardiac abnormalities in stroke patients.
Rhythm disturbances
Atrial fibrillation
AF is a cardiac arrhythmia, defined by the absence of P waves and varying RR distances in the electrocardiogram. AF is a common arrhythmia and its prevalence increases with age up to 9% at age 80–89 years (Figure 7.1). Approximately 85% of the individuals with AF are between 65 and 85 years of age [1].
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.