Bradycardia
Bradycardia is a slowing of the heart rate below the physiological limit, most commonly considered to be bradycardia at less than 60 beats/min (in adults). Bradycardia can occur in sleep or in a state of physical and mental relaxation. It is often present physiologically under resting conditions in trained athletes. The opposite of bradycardia is tachycardia.
Bradycardia:
Bradycardia 2:
Pathological causes of bradycardia include hypothyroidism, disease of the sick sinus syndrome (SSS), disengagement of the sinus node, fluctuations of the ions (hyperkalaemia), intracranial injury, myocardial infarct, inflammation of the heart.
Bradycardia therapy (for men <60 beats, for women <65 beats):
- atropine i.v.
- operation:
- the greatest effect on the sinus and atrioventricular nodes, the distal efficiency decreases
- with complete AV blockages with broad QRS effectiveness little/none
- mechanism: Vagolytic
- effect: short-term about 30 min, cannot be given long-term
- indication: in bradycardia <60/min.
- dose: 0.5 mg i.v., repeat max to 3 mg i.v., but not as a bolus
- operation:
- izoprenaline in i.v. infusion
- operation: catecholamins
- mechanism: sympathomimetic agent
- dose: Isoprenaline 5 ųg/min
- effect: at the sinusoidal node, atrioventricular node, even at the more distant centers
- discontinue bradyarrhythmic drugs: beta blockers or antiarrhythmics
- therapies for possible thyroid hypofunction
- (temporary) cardiostimulation
References[edit | edit source]
Referenced articles[edit | edit source]
External references[edit | edit source]
Sources[edit | edit source]
- ŠVÍGLEROVÁ, Jitka. Bradykardie [online]. The last revision 2009-02-18, [cit. 2010-11-12]. <https://web.archive.org/web/20160416225124/http://wiki.lfp-studium.cz/index.php/Bradykardie>.
non-existent now
- ŠEVČÍK, Pavel – MATĚJOVIČ, Martin. Intenzivní medicína.. 3., přeprac. a rozš. edition. Praha : Galén, spol. s r.o., 2014. 1195 pp. ISBN 978-80-7492-066-0.
- » Česká resuscitační rada [online]. Dostupné z: http://www.resuscitace.cz/wp-content/uploads/2011/01/Poster_10_ALS-BRAD_01_01_CZE_V20110112.pdf non-existent now
Bradycardia is a slowing of the heart rate
below the physiological limit, most commonly considered to be bradycardia at less than 60 beats/min (in adults). Bradycardia can occur in sleep or in a state of physical and mental relaxation. It is often present physiologically under resting conditions in trained athletes. The opposite of bradycardia is
tachycardia
.
Bradycardia:
Bradycardia 2:
Pathological causes of bradycardia include hypothyroidism, disease of the sick sinus syndrome (SSS), disengagement of the sinus node, fluctuations of the ions (hyperkalaemia), intracranial injury, myocardial infarct, inflammation of the heart.
Bradycardia therapy (for men <60 beats, for women <65 beats):
atropine i.v.
operation:
the greatest effect on the sinus and atrioventricular nodes, the distal efficiency decreases
with complete AV blockages with broad QRS effectiveness little/none
mechanism: Vagolytic
effect: short-term about 30 min, cannot be given long-term
indication: in bradycardia <60/min.
dose: 0.5 mg i.v., repeat max to 3 mg i.v., but not as a bolus
izoprenaline in i.v. infusion
operation: catecholamins
mechanism: sympathomimetic agent
dose: Isoprenaline 5 ųg/min
effect: at the sinusoidal node, atrioventricular node, even at the more distant centers
discontinue bradyarrhythmic drugs: beta blockers or antiarrhythmics
therapies for possible thyroid hypofunction
(temporary) cardiostimulation
References
Referenced articles
External references
Sources
- ŠVÍGLEROVÁ, Jitka. Bradykardie [online]. The last revision 2009-02-18, [cit. 2010-11-12]. <https://web.archive.org/web/20160416225124/http://wiki.lfp-studium.cz/index.php/Bradykardie>.
non-existent now
- ŠEVČÍK, Pavel – MATĚJOVIČ, Martin. Intenzivní medicína.. 3., přeprac. a rozš. edition. Praha : Galén, spol. s r.o., 2014. 1195 pp. ISBN 978-80-7492-066-0.
» Česká resuscitační rada [online]. Dostupné z:
http://www.resuscitace.cz/wp-content/uploads/2011/01/Poster_10_ALS-BRAD_01_01_CZE_V20110112.pdf
non-existent now
