equine ICVA NAVLE study Questions
and Answers.
what horses are most affected by aortic rupture -
\older horses, stallions, Friesians
what is the etiology of aortic rupture -
\aorta may dissect into the PA, pericardium or right myocardium
what are CS of aortic rupture -
\paracute death, colic, tachycardia, sweating, continuous machinery murmur, bounding
pulses, signs of acute distress/pain/colic
what is tx of aortic rupture -
\mgt of acute congestive heart failure
what is placement of a lead 1 on a horse -
\white is negative at right POS, black is positive at left axilla, red anywhere on left
what is equine tachycardia -
\> 50 bpm
what is the most common bradyarrhythmia in horses -
\av block
what causes av block in horses leading to bradyarrhythmias -
\high parasympathetic tone
how do you determine a non pathologic bradyarrhythmia in a horse -
\increase sympathetic tone with exercise, scare, atropine
this arrhythmia is when occasional p waves are not followed by a QRS complex -
\2nd degree AV block
this arrhythmia is when two or more p waves are not followed by a QRS complex but all
QRS are preceded by a p wave -
\advanced 2nd degree AV block
this arrhythmia is when p waves are present but have no association with QRS - QRS
may be wider than typical and RR interval is irregular -
\3rd degree AV block
What is the tx of 3rd degree AV block? -
\atropine
and Answers.
what horses are most affected by aortic rupture -
\older horses, stallions, Friesians
what is the etiology of aortic rupture -
\aorta may dissect into the PA, pericardium or right myocardium
what are CS of aortic rupture -
\paracute death, colic, tachycardia, sweating, continuous machinery murmur, bounding
pulses, signs of acute distress/pain/colic
what is tx of aortic rupture -
\mgt of acute congestive heart failure
what is placement of a lead 1 on a horse -
\white is negative at right POS, black is positive at left axilla, red anywhere on left
what is equine tachycardia -
\> 50 bpm
what is the most common bradyarrhythmia in horses -
\av block
what causes av block in horses leading to bradyarrhythmias -
\high parasympathetic tone
how do you determine a non pathologic bradyarrhythmia in a horse -
\increase sympathetic tone with exercise, scare, atropine
this arrhythmia is when occasional p waves are not followed by a QRS complex -
\2nd degree AV block
this arrhythmia is when two or more p waves are not followed by a QRS complex but all
QRS are preceded by a p wave -
\advanced 2nd degree AV block
this arrhythmia is when p waves are present but have no association with QRS - QRS
may be wider than typical and RR interval is irregular -
\3rd degree AV block
What is the tx of 3rd degree AV block? -
\atropine
