This vessel carries oxygen depleted blood from the left atria to the lungs
pulmonary artery
In a normal functioning heart, all electrical current begins here.
Sinoatrial node
the P-wave on an ECG indicates ___________.
Atrial depolarization.
Your patient presents with a grossly irregular tachycardic pulse, she is pale, has an AMS, and takes diltiazem. She is most likely suffering from _________.
A-Fib with RVR.
An antiplatelet drug for use in cardiac chest pain
ASA/Aspirin
The largest part of the heart
left ventricle
The ______ is a branch of the anterior internodal tract that resides on the inner wall of the left atrium.
Bachmann's Bundle
A P-R-I of greater than 0.20 seconds indicates what?
first degree block
The invasive treatment of a cardiac tamponade is:
Pericardiocentesis
A calcium channel antagonist Adult dosage: o.25 mg/kg
Diltiazem/Cardizem
The mitral and tricuspid valves are also known as ________ valves.
atrioventricular (AV)
in the resting state a given cardiac myocyte has a ________ membrane potential.
negative
This pre-excitation syndrome is characterized by retrograde conduction via the Bundle of Kent and is seen on an ECG by a gradual upward slope of the R wave.
WPW
ST Segment depression in leads V1, V2, V3 and V4 would most likely indicate this patient is experiencing cardiac ischemia in the _______ side of the heart.
posterior
TCA overdose, your patient presents with an AMS and widened QRS complex. Your treatment is: ________
Sodium Bicarbonate
The physical divider of the ventricles.
interventricular septum
Cardiac depolarization begins with a sudden influx of ______.
Sodium
S-T Segment elevation in all leads may indicate a condition known as pericarditis. This is inflammation of the ________.
pericardium
In the presence of an Inferior STEMI, it is likely the right ventricle is involved as well. This is because portions of both are supplied by which coronary artery?
Right coronary artery
Epinephrine induces a positive _______, ___________, and ________ effect.
chronotropic, inotropic, and dromotropic
The atria of the heart are separated from the ventricles by the ___________; this contains the trunks of the nutrient vessels of the heart, and is deficient in front, where it is crossed by the root of the pulmonary trunk.
coronary sulcus
the period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied
absolute refractory period
This method of identifying a STEMI in the presence of a LBBB is based upon the criteria of: Concordant ST elevation > 1mm, Concordant ST depression > 1 mm, Excessively discordant ST elevation > 5 mm. This method is proven to be 90% specific.
Sgarbossa Criteria
Cardiac preload is the end diastolic pressure that stretches the right or left ventricle of the heart to its greatest geometric dimensions under variable physiologic demand. This is know as the ______________ law.
Frank–Starling law
Sodium Channel Antagonist. Attenuates phase 4 diastolic depolarization, decreases automaticity, decreases action potential duration, and raises ventricular fibrillation threshold; inhibits conduction of nerve impulses from sensory nerves
Lidocaine