1st degree av block - Study guides, Class notes & Summaries

• Normal rhythm • HR = 300/4.4 = 68 bpm • P wave = sinus origin • QRS complex = preceded by P wave, normal • Normal sinus rhythm • Tall QRS complex, narrow, preceded by P wave • HR = <60 bpm (bradycardia) • P wave = sinus origin • Sinus bradycardia Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:00 Full screen • Irregular rhythm (slow --> speeds up --> slows down) • HR = 70 bpm • P...

ECG Exam 2 Questions With 100% Correct Answers Where does a junctional rhythm originate - answerAV Node Why do we call it AV Junction and not AV Node? - answerAV junction is the space between the atrial and ventricle, while the AV node is the back up pacemaker Where will the P waves be located with a junctional rhythm? - answerImmediately before, after, or hidden within QRS What is the rate of a junctional rhythm - answer40 to 60 bpm What is an accelerated junctional rhythm? - answerRate...

1st line for bradycardia - Answer *ATROPINE* followed by epi or norepi *TRANSCUTANEOUS PACING* if 3rd degree heart block of AV dissociation if stable then only need to monitor and observe dx of ischemic heart disease - Answer *ECG* is often initial test (ST depression), *STRESS TESTING* usually after initial ECG (most useful noninvasive screening tool) *resting ECG is normal in 50% of stable angina* *angiography is gold standard* 1st line for tachycardia - Answer *VAGAL M...

Relias Dysrhythmia Basic Test Answers normal sinus rhythm heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute Sinus Arrhythmia Appearance is ALMOST NORMAL: Respiratory – Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia <60 normal sinus rhythm Sinus Tachycardia >100 (100-150) normal sinus rhythm Premature Atrial Contraction (PAC) Heart Rate: Depends on underlying rhythm Regularity: Interrupts the re...

Relias Dysrhythmia Basic Test Answers normal sinus rhythm heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute Sinus Arrhythmia Appearance is ALMOST NORMAL: Respiratory – Circulatory interaction Rate INCREASES with INSPIRATION (IN=IN) Sinus Bradycardia <60 normal sinus rhythm Sinus Tachycardia >100 (100-150) normal sinus rhythm Premature Atrial Contraction (PAC) Heart Rate: Depends on underlying rhythm Regularity: Interrupts the re...

SA node rate correct answers 60-100 Atria rate correct answers 60-80 AV junction rate correct answers 40-60 Ventricles rate correct answers 20-40 Normal sinus: rhythm, rate, and PR correct answers Regular Rhythm Rate 60-100 PR interval .12-.20 Sinus Bradycardia: rhythm, rate, PR correct answers Regular Rhythm Rate 60-100 PR interval .12-.20 Causes of Bradycardia correct answers Drug induced- digoxin and Beta blockers MI Vagal stimulation Hypoxia Sinus tachycardia rate...

Treatment for 1st deg AV block None needed A first degree atrioventricular (AV) block is characterized by a long PR interval (>.........milliseconds). 200 What medication is contraindicated for Inferior ST Elevation Myocardial Infarction Nitroglycerin Initial interventions for management of acute coronary syndrome 1. ABC 2. O2 monitor and IV access 3. Treat sustained ventricular dysrhythmia 4. Aspirin 5. H & P, baseline neuro for potential fibrinolytic tx 6. Labs (troponin), coag...

1ST DEGREE AV BLOCK - Answer-THE P WAVE PRECEDES EACH QRS COMPLEX BUT THE PR INTERVAL IS .0.2 SECS. 22 PREMATURE ATRIAL CONTRACTIONS - Answer-THERE ARE PREMATURE AND ABNORMALLY SHAPED P WAVES. THE PR INTERVAL IS TYPICALLY WITHIN NORMAL LIMITS, BUT MAY BE SHORT OR SLIGHTLY PROLONGED. THE QRS COMPLEX IS USUALLY WITHIN NORMAL LIMITS AND NORMAL CONFIGURATION 2ND DEGREE AV BLOCK MOBITZ 1 (WENCKEBACH) - Answer-DISEASED TISSUES OF THE AV NODE CONDUCT EACH IMPULSE EARLIER IN THE REFRACTORY PERI...

Automaticity correct answer: Ability to initiate an impulse at a regular interval; "pacemaker" Excitability correct answer: Ability of the heart to respond to a stimulus Conductivity correct answer: Ability of the heart to transmit an electrical impulse from one cell membrane to another Contractility correct answer: The ability of the heart muscle cells to shorten in response to an electrical stimulus Refractoriness correct answer: "Resistant to"; cannot respond to a stimulu...

ECG Pictures Latest 2023 Graded A • Normal rhythm • HR = 300/4.4 = 68 bpm • P wave = sinus origin • QRS complex = preceded by P wave, normal • Normal sinus rhythm • Tall QRS complex, narrow, preceded by P wave • HR = <60 bpm (bradycardia) • P wave = sinus origin • Sinus bradycardia • Irregular rhythm (slow --> speeds up --> slows down) • HR = 70 bpm • PR interval = normal • Respiratory sinus arrhythmia • 2 sinus pauses (arrests) • P wave = sinus node ori...