Normal Sinus Rhythms
Normal resting heart rate for healthy adults
What is 60-100 beats per minute?
A Sinus Arrythmia is defined as a
What is an irregularity of the heartbeat?
The heart rate of a patient with Sinus Bradycardia
What is less than 60 beats per minute?
Regular or Irregular Rhythm
What is an irregular rhythm?
A rhythm characterized by a rate of more than 100 beats per minute.
What is Sinus Tachycardia?
In Lead II, the P wave is upright, positive or downward, negative?
What is upright and positive?
Has an _____ rhythm.
What is irregular?
Pacemaker Site/ Origin
What is the Sinoatrial (SA) node?
Presentation of P wave during arrest/block
Description of P wave
What is upright and rounded, but could be hidden or buried in the preceding T wave?
What is 0.12 - 0.20 seconds?
What is the P wave is positive and upright in Lead II?
Duration of the QRS Complex
What is 0.8 seconds or more?
Similarity and Difference between a Sinus Arrest and a SA Exit Block
What is they both result in bradycardia and/or asystole?
What is one doesn't generate an electrical impulse from the SA node, and one does generate an electrical impulse from the SA node but blocks it from entering into the atria?
The higher the rate, the _____ the PR interval becomes.
What is shorter?
Location of the QRS Complex
What is following the P wave?
Sinus Arrythmias have a direct relationship with
What is respiration?
Name 3 Signs and Symptoms
What is dizziness, shortness of breath (dyspnea), hypotension, and Angina?
Failure of the SA node causes the P-P and R-R intervals to be equal or unequal.
What is unequal?
Name 1 Underlying Cause
What are stimulants, MI, PE, Fever. Anemia, Hypoxia, Hypovolemia, Shock, Hypotension, Congestive Heart Failure?
NSR Conduction Pathway:
What is originates in the SA node - Atria - AV node - Ventricles via Bundle of His - Left and Right Bundle Branches - Purkinje Network?
The changes of a patient's heart rate as they inhale or exhale.
What is increases during inhalation and decreases during exhalation?
An adverse effect of drugs, such as calcium-channel blockers are one of many ______.
What are causes?
May result from the toxicity of which medication.
What is digitalis?
Sinus Tachycardia may result in the increase of
What is myocardial ischemia, frequent and severe chest pains, and more serious dysrhythmias?