Qrs - Study guides, Revision notes & Summaries

The resuscitation team suspects that hyperkalemia is the cause of cardiac arrest in a patient brought to the emergency department. Which finding on a 12-lead ECG would confirm this suspicion? - correct answer Wide-complex ventricular rhythm or tall, pointed T waves A patient with dyspnea and a change in mental status arrives at the emergency department. The healthcare team completes the necessary assessments and begins to care for the patient, including initiating cardiac monitoring, pulse ox...

UCLA EKG Test Questions And Answers, All Verified AV node rate 40-60 bpm SA node rate 60-100 bpm Purkinje fibers rate 20-40 bpm PR interval is from _ to _? beginning of P wave to beginning of Q wave QRS interval is from _ to _? beginning of Q to end of S QT interval is from _ to _? beginning of Q to end of T PR interval normal duration 0.12-0.20 s QRS normal duration 0.04-0.12 s QT interval normal duration 0.36-0.44 Normal Sinus Rhythm (N...

ATI CARDIAC Questions and Verified Answers| 100% Correct| Grade A (2023/ 2024) Q: A nurse is caring for a client who has heart failure and whose telemetry reading displays a flattening of the T wave. Which of the following laboratory results about the nurse anticipate as the cause of this ECG change? A. Potassium 2.8 mEq/L B. Digoxin level 0.7 ng/mL C. Hemoglobin 9.8 g/dL D. Calcium 8.0 mg Answer: A Q: A nurse is providing teaching to a client who has anemia and a new prescri...

ventricular filling QRS Complex Normal is <0.12 seconds usually between 0.06 to 0.10 seconds Ventricular depolarization QT Interval Normal 0.36-0.46 6 Steps for Rhythm Interpretation Determine Regularity Calculate the Rate Evaluate the P wave Measure the PRI Evaluate the QRS Width Evaluate the T wave and Calculate the QTI Normal Sinus Rhythm Regularity: atrial and ventricular rate are regular Rate: 60 to 100 beats per minute P wave: upright, smooth, round and uniform shape, on...

dysrhythmia aka arrhythmia - Correct answer - abnormal cardiac rhythms which can cause disturbances of: rate, rhythm, or both rate and rhythm how are dysrhythmias identified? - Correct answer Electrographic Waveform Analysis (ECG) what controls the rate and rhythm of the heartbeat? - Correct answer the heart's electrical system explain the heart's electrical system - Correct answer Each electrical signal (impulse) begins in a group of cells called the sinus node or sinoatrial (SA...

EKG Strips - Images & Definitions - Atrial Flutter, Atrial Fibrillation, Junctional Rhythm, Accelerated Junctional Rhythm, Junctional Tachycardia Rhythm, Supraventricular Tachycardia, First Degree AV Block, Second Degree AV Blocok Mobitz I (Wenkebach), Second Degree (AV) Block, Third Degree (Complete) Heart Block, Physiologic Q wave, Pathologic Q wave, Ventricular Tachycardia, Ventricular fibrillation, Asystole, Atrial Pacemaker Rhythm, Ventricular Pacemaker Rhythm, Atrioventricular Pacemaker Rh...

a wide, bizarre QRS usually occurring earlier than expected with T wave in opposite direction? tx?Answer - PVC (premature ventricular contraction); no tx (may just be dehydrated) -subacute/s. viridans endocarditis treatmentAnswer - PCN OR ampicillin + gentamycin infection of the endothelium/valves 2ndry to colonization (during transient/persistent bacteremia)Answer - Endocarditis MC valve involved in infective endocarditis in non IVDAAnswer - mitral valve M>A>T>P MC val...

AACN AGACNP boards Questions and answers 2023/2024 Pericarditis - correct answer Often present w/ friction rub, sharp CP w/ inspiration, low-grade fever, muffled heart tones, hypotension. Tx w/ colchicine. Pulmonary edema - correct answer Pink/frothy sputum. Tachypnea, dyspnea, b/l wheeze. CXR shows alveolar infiltrates, kerley B lines, and pleural effusions. Cardiac tamponade - correct answer Becks Triad= muffled tones, JVD, HoTN. Narrow pulse pressure. Low C.O., low BP, tachy...

What is the primary pacemaker? Correct Answer: SA Node What is a more medically correct term for the clotting of an artery? Correct Answer: Occlusion When the Atria depolarize (or contract), what is shown on the EKG tracing? Correct Answer: P wave An irregular heartbeat that is common among children is called _____ _____. Correct Answer: Sinus Arrhythmia 1 sm box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters? Correct Answer: 1 mm 2 What is...

Normal Length for PR, QRS, and QT intervals. correct answers PR 0.12-0.20 sec, QRS 0.08-0.12 sec, and QT interval less than or = to 450 ms or half the R-R interval Big box on ECG readings = ___ seconds? correct answers 0.20 seconds Little boxes on ECG readings = ____ seconds? correct answers 0.04 seconds The mA that achieves capture is the _______ _________ correct answers pacing threshold Defibrillation energy settings (biphasic and monophasic) correct answers biphasic 120-200 j and...