The isoelectric line - Study guides, Class notes & Summaries

Electrocardiogram (ECG) - Since you can't see the heart beating we use a ECG to provide a picture that replicates the actual cardiac issue. Myocardial Infraction (MI) - Heart Attack -Have abnormal rhythms. -Death of cardiac muscle due to ischemia Doe the ECG machine monitor or control the hearts rhythm? - Only monitors Straight line when machine is turned on but not connected to the patient - Isoelectric = no current It is straight because there is a balanced electrical force field. Thi...

electrical pathway with beats per minute 1) SA ->60-100 2)AV -> 40-60 3) Bundle of His ->20-40 4)L&R bundle branches -> 20-40 5) Purkinje Fibers -> 20-40 Is an EKG a recording of electrical or mechanical response of the heart? Electrical!!! P wave atrial depolarization QRS complex ventricular depolarization T wave ventricular repolarization -due to potassium Anything above isoelectric line is ____ and anything below the isoelectric line is ____ positive; negative ...

5 lead electrode placement - go in intercostal space! *Smoke over fire, snow over grass, and brown in middle!* 6 steps of rhythm strip analysis - 1. determine if regular or irregular 2. calculate rate 3. evaluate the p & QRS waves 4. measure the PR interval 5. measure the QRS 6. interpret rhythm A-Fib etiology - - Advanced age - MI - CAD - Valvular disease - Congenital heart defects - Hyperthyroidism - Stimulant medication abuse A-Fib s/sx - u-"F" fibrillatory waves -Ø discern...

Electrophysiology - ACCURATE ANSWERS 1. Automaticity - ability to create electrical impulse spontaneously - every cell contains 2. Excitability - ability to respond to outside stimulus - ready to transmit/contract 3. Conductivity - receive impulse, conduct to nearby cells 4. Contractility - ability to shorten, or contract Polarization - ACCURATE ANSWERS alive and ready for signal - inta/extra cellular ions aligned Depolarization - ACCURATE ANSWERS ions shift, creating wave as it ...

Henderson-Hasselbach Equation - pH = pKa + log ([A-] / [HA]) FMOC Chemical Synthesis - Used in synthesis of a growing amino acid chain to a polystyrene bead. FMOC is used as a protecting group on the N-terminus. Salting Out (Purification) - Changes soluble protein to solid precipitate. Protein precipitates when the charges on the protein match the charges in the solution. Size-Exclusion Chromatography - Separates sample based on size with smaller molecules eluting later. Ion-Exchange...

Echelon quiz questions: EKG and Cardiac Rhythms Comprehensive Question and Answer Session with a Perfect 100% Accuracy, 2024When the sympathetic nerve fibers are stimulated, the heart rate is ____________.elevated Electrode location sites should be rotated _______________ or when the pt is sweaty or has had a bath. q24hBrainpower Read More Previous Play NextRewind 10 secondsMove forward 10 seconds Unmute0:01/0:15 Full screenWhat method is used to calculate atrial and ventricular rate for irregu...

EKG STUDY MATERIAL FOR ADVENTHEALTH Exam Questions With Verified Answers 3 pacemakers of the heart - answer1. SA node 2. AV node 3. bundle branch intrinsic rate of SA node - answer60-100 bpm intrinsic rate of AV node - answer40-60 bpm intrinsic rate of bundle branches - answer20-40 bpm electrical pathway through the heart - answer1. normal conduction impulse originates in the *SA Node* 2. impulse travels to *AV Node* causing atrial depolarization (contraction) 3. AV Node slightly del...

Cardiac Conduction Pathway System SA node> AV node> Bundle of His> Left and Right bundle branches> Purkinjie fibers Pacemakers of the heart Natural: SA Node = 60-100 beats/minute Backup: AV Node = 40-60 beats/minute Backup: Purkinje Fibers (ventricles) = 20-40 beats/minute Brainpower Read More SA Node • Intrinsic Pacemaker of the heart • Rate 60-100 beats/min • RA (Right Atrium), close to SVC (Superior Vena Cava) • Blood supply from RCA (Right Coro...

Basic Cardiac Rhythm Interpretation Advanced Exam Review Update A+ 1 / 22 P Wave Atrial Depolarization stim￾ulated by the firing of the SA node. Evaluate: consistent ap￾pearance and 1:1 relation￾ship with QRS complex. If not identical some, or all, may be atrial, but not SA node, in origin. IF >1 P-wave precedes QRS a heart block may be present. Basic Cardiac Rhythm Interpretation Advanced Exam Review Update A+ 2 / 22 PR Interval Impulse traveling time from the atriu...

When the sympathetic nerve fibers are stimulated, the heart rate is ____________. - elevated Electrode location sites should be rotated _______________ or when the pt is sweaty or has had a bath. - q24h What method is used to calculate atrial and ventricular rate for irregular rhythms? - 6 second rule T or F: The qrs complex in MCL1 can be negative and still be normal. - T A wave form is a movement ______________ the isoelectric line in either a positive or negative direction. - away from ...