Human Diseases L3: CVD 3 Cardiac Arrhythmia Flashcards
due to the irregular contraction if the atria it increases the risk of developing a ……….. the irregular atria increases the development of ………….. which can then be displaced to the systemic region of the body
stroke
blood clots
which is the most common cardiac arrhythmia, particularly in the elderly
atrial fibrilation
what event is occuring in the ECG
Supraventricular tachycardia (SVT)
heart rate below 60 bp/m is refered to as bradyarrhythmia. however symptoms are shown when heart rate drops below what
40 bp/m
which wave determines ventricular depolarisation
QRS wave
unpleasant - fast heart rate
palpitations
chest pain
breathless
the above symptoms best describe which cardiac arrhythmias
tachyarrhythmias
which drug blocks the AV node temporarily
adenosine
what approach would you have to take if someone with a pacemaker or any underlying heart conditions collapses during dental treatment
A,B,C,D,E approach
which wave determines ventricular repolarisation
T wave
what are the treatment options for ventricular fibrilation/tachycardia
drugs
ICD (Implantable cardioverter defibrilator)
tachyarrhythmias refer to when your heart beats are what?
too fast
is it normal to exibit no symptoms with a arrhythmia
yes
the atrial contraction of a sinus rhythm begins at the …………..
SA (sinoatrial) node
electrical signals travel from the AV node via the ………………. and spread throughout the ventricles via the ………………………..
bundle of his
purkinje fibers
what event is occuring in the ECG
ventricular tachycardia
which particuylar drug can result in bradyarrhythmia
beta blockers
in a ECG, what would you expect to see with someone with atrial fibrilation
irregular spread
irregular beats
a particular symptom of cardiac arrhythmias is a fluttering feeling in the chest. this is best known as having …………………
palpatations
what is done in the valsalva manoeuver (vagal manoeuver)
hold nose, breath out hard through mouth
which is the most fatal of all the arrhythmias
ventricular arrhythmias
bradyarrhythmia refers to when your heart beats too what
too slow
of the vagal manoeuvers which manoeuver can only be done with a doctor
carotid sinus massage
patients who are suffering frim atrial fibrillation should be on what particular drugs if no contraindications are present.
give common examples of the drugs
anticoagulants
warfarin, heparin, rivaroxaban, apixaban
treatments for bradyarrhythmias usually requires the removal of the underlying cause which is often drugs. what are the treatment option can help regulate the hear beat
pacemaker
fibrilation is defined as wobbling, uncoordinated activity. which chamber does atrial fibrilation affect
atria
what is term given for the sudden onset of supraventricular tachycardia
paroxysmal supraventricular tachycardia
abnormal cardiac rhythm ranges from
- irregular beats
- too fast >100/minute
- too slow <60/minute
- abnormal beat conduction
what is term used for abnormal cardiac rhythm
Arrhythmia
electrical signals and depolarisation from the SA node travels to the ventricular wall to the ……………
AV (atriventricular) node
which wave determines atrial depolarisation
P wave
normal cardiac rhythm is also known as
sinus rhythm
what event is occuring in the ECG
bradycardia
