Coordinating Care for Patients

Coordinating Care for Patients With Cardiac Dysrhythmia A Clinical Diagnostic Atlas & Rhythm Master Map NSR NORMAL SINUS RHYTHM V-FIB VENTRICULAR FIBRILLATION - LETHAL RHYTHM NotebookLM ANATOMICAL CONDUCTION PATHWAYS ELECTRICAL WAVEFORM (EKG COMPLEX) P Wave: SA node fires (Atrial Depolarization) QRS Complex: Ventricular Depolarization (atrial repolarization is hidden inside) T Wave: Ventricular Repolarization U Wave: Purkinje fibers repolarize (rarely seen) QRS T P U Q TEST ALERT SA Node is the natural pacemaker of the heart. Normal rate = 60-100 bpm. NotebookLM EKG MASTERCLASS: THE MATHEMATICS OF THE STRIP MICRO-TIME Small box = 1mm = 0.04 seconds. MACRO-TIME Large box (5 small boxes) = 0.20 seconds. 6 Seconds (30 large boxes) THE 6-SECOND RULE 30 large boxes = 6 seconds. Count the QRS complexes in this window and multiply by 10 to get HR. TEST ALERT: The EKG is the gold standard diagnostic tool for Myocardial Infarction (MI). REGULARITY CHECK: Are there the exact same number of small boxes between each R-R interval? NotebookLM The Anatomical Origin Mind Maр Atrial Origin Atrial Fibrillation Atrial Flutter PACS SVT Ventricular Origin Ventricular Tachycardia Ventricular Fibrillation Idioventricular Asystole SA Node Origin Sinus Bradycardia (<60 bpm( Sinus Tachycardia (>100 bpm) AV Node Origin Junctional Rhythms (40-60 bpm) NotebookLM Sinus Bradycardia (<60 bpm) • Presentation: Regular rhythm, slow rate. Risks/Triggers: Hурохіа, Hypothermia, highly trained athletes. Sinus Tachycardia (>100 bpm) • • Presentation: Regular rhythm, rapid rate. Risks/Triggers: Hypovolemia, Hypotension, Fever, Anemia, PE, MI. Clinical Intervention Pathway: Bradycardia Is the Bradycardic patient symptomatic? YES Action: Administ Atropine IV push for permanent pa TEST ALERT: Atropine sulfate IV push increases SA node stimulus and is the primary treatment for symptomatic sinus bradycardia. NotebookLM EKG Waveform Comparison Atrial Fibrillation (A-Fib) Atrial Flutter mтtтириириририииир Atrial Fibrillation (A-Fib) Physiology: Multiple chaotic impulses. Waveform: No P waves, completely irregular rhythm, fibrillatory waves. Atrial Flutter Physiology: Rhythm produced outside SA node. Waveform: No P waves, distinct 'Sawtooth' pattern (F waves). Clinical Risks & Protocols Risks/Warnings: Age, Cardiomyopathy, Pericarditis, Valvular Disease, COPD (Flutter). CRITICAL WARNING: Blood pooling in vibrating atria causes massive clot and embolic stroke risk. * Test Alert • Intervention Pathway: 1. Control Rate (Beta Blockers, Calcium Channel Blockers, Digoxin) -> 2. Control Rhythm (Amiodarone) -> 3. Cardioversion/Ablation. NotebookLM PACS (Premature Atrial Contractions) Pacemaker close to SA node fires early. Usually non-life threatening. SVT (Supraventricular Tachycardia) Rapid HR (150-250 bpm) originating above ventricles. Very narrow QRS complex. PAC Dietary & Toxin Triggers (Patient Edu) TEST ALERT: Adenosine rapid IV push (6mg) is used in SVT to temporarily slow the heart rate to visualize the underlying rhythm. Explicitly warn patients against excessive stimulant ingestion (Caffeine, Energy Drinks). Warn against alcohol, recreational drugs (cocaine), and tobacco. NotebookLM The Diagnostic Key The AV Node takes over the pacemaker role (normally 40-60 bpm). Look for an inverted (upside-down) P wave or an absent P wave hiding within the QRS. Risks & Patient Edu Triggers: Acute MI, Heart Surgery, Hypoxia. Junctional: 40-60 bpm Accelerated: 61-100 bpm Tachycardia: >100 bpm • Absent P wave Triggers: Acute MI, Heart Surgery, Hypoxia. CRITICAL WARNING: Digoxin Toxicity is a primary trigger. Teach patients to recognize medication toxicity symptoms and strictly monitor their pulse. Test Alert NotebookLM EMERGENCY DIAGNOSTIC MATRIX: LETHAL RHYTHMS Ventricular Tachycardia (V-Tach) Rapid, wide complexes. Can occur with or without a pulse. Triggers: Electrolyte imbalances (Hypo/hyperkalemia, Hypomagnesemia), Toxins, Cardiac Tamponade, MI. миши Ventricular Fibrillation (V-Fib) Multiple chaotic, rapid fires. Ventricles are vibrating, not pumping. Zero Cardiac Output = Immediate Death. Normal Sinus Rhythm Ventricular Fibrillation TEST ALERT: V-Fib is the most frequently seen rhythm in cardiac arrest. Pulseless VT and VF require immediate CPR and Defibrillation. NotebookLM TERMINAL STAGES: FROM VENTRICULAR ESCAPE TO ASYSTOLE Idioventricular Rhythm Both SA and AV nodes fail. Ventricles generate a sluggish backup rhythm (<40 bpm). Risks: Post-cardiac arrest, severe drug toxicities. Treatment: Pacing, Atropine, treat underlying cause. Asystole Complete flatline. No measurable electrical activity. TEST ALERT CRITICAL WARNING: You CANNOT defibrillate Asystole. Immediate intervention is highquality CPR and Epinephrine. NotebookLM PHYSIOLOGICAL CONSEQUENCES OF DYSRHYTHMIAS Brain Decreased blood flow = dizziness, syncope (fainting), change in change in Level of Consciousness (LOC) Lungs Fluid backup/poor perfusion = Shortness of breath (SOB), tachypnea Heart Myocardial 02 demand > supply = acute chest pain TEST ALERT: Cardiac Output (CO) = Heart Rate x Stroke Volume Gut/Skin Body shunts blood from nonessential organs = Nausea/vomiting, diaphoresis (sweating) Periphery 오 Poor circulation = weak pulses, sluggish capillary refill, cool extremities, hypotension NotebookLM CRASH CART MEDICATION GRID FOR CARDIAC DYSRHYTHMIAS Adenosine Indication: SVT. Warning: IV push 6mg; causes brief asystole. Monitor closely. Beta / Calcium Channel Blockers Indication: Tachycardias/AFib with RVR. Warning: Negative chronotropic effects; use cautiously in Heart Failure. Amiodarone Indication:VT, VF, AF. Warning: Must be prepared in a glass bottle for continuous IV infusion. Digoxin Indication: AF, AFL, ST. Warning: High toxicity risk. Monitor renal function and dig-levels. Anticoagulants (Warfarin/Heparin) Indication: AFib/A-Flutter. Warning: Embolic stroke prevention. Institute bleeding/fall precautions. Monitor INR/PT/aРТТ. Epinephrine TEST ALERT Indication: Pulseless VT / VF. Warning: Used in combination with CPR. NotebookLM CARDIOVERSION vs. DEFIBRILLATION: CLINICAL DISTINCTION CARDIOVERSION (Controlled) DEFIBRILLATION (Uncontrolled) Definition Controlled discharge at the peak of the R wave. Uncontrolled discharge anywhere in the cardiac cycle. Definition Indications Symptomatic tachy dysrhythmias WITH a pulse (SVT, AFib, VT w/ pulse) Tachy dysrhythmias WITHOUT a pulse (Pulseless VT, V-Fib) Indications Energy Joules Starts low (50-100 J) High energy (200 ل Energy Joules Pad Placement Anterior/posterior (sandwich) Anterior (apex/sternum) Pad Placement + TEST ALERT: Cardioversion MUST trigger and fire specifically on the R wave to avoid sending the patient into lethal V-Fib. NotebookLM PATIENT EDUCATION INFOGRAPHIC: LIFESTYLE, DIETARY, AND TOXIN TRIGGERS Dietary Stimulants Caffeine and energy drinks are primary triggers for PACs and SVT. Patient Education: Audit daily stimulant intake if palpitations occur. Electrolyte Intake Dietary potassium and magnesium imbalances directly trigger lethal ventricular rhythms (V-Tach). Toxins & Recreation Alcoholism triggers Sinus Tachycardia. Cocaine and tobacco act as massive cardiac irritants. Managing Comorbidities Diet-controlled Type 2 Diabetes and Obessity are massive risk factors for developing Atrial Fibrillation. Total lifestyle modification is preventative care. NotebookLM THE MUST-KNOW EXAM HIGHLIGHT REEL Gold Standard: EKG is the definitive diagnostic tool for MI. The Pacemaker: SA node naturally paces at 60-100 bpm. Bradycardia Fix: Symptomatic sinus bradycardia = Atropine IV push. Lethal Recognition: V-Fib is chaotic/vibrating; it is the most common rhythm in cardiac arrest. [V-Fib in arterial crimson] The Defib Rule: Pulseless V-Tach and V-Fib require immediate CPR and Defibrillation (Uncontrolled shock). [V-Tach, V-Fib, CPR, Defibrillation inarterial crimson] The Cardioversion Rule: Must sync to the R wave. Used for symptomatic rhythms WITH a pulse. The Flatline Rule: Never shock Asystole. Start CPR. NotebookLM