Duration of t wave Study guides, Class notes & Summaries

Normal PR segment length 0.12 - 0.2 sec 3 - 5 small boxes Normal QRS interval 0.06 - 0.1 sec 1 - 3 small boxes Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen Normal P amplitude & duration < 0.12 sec (3 small boxes) < 0.25 mV (2.5 small boxes) causes of arrhythmias HISDEBS: hypoxia, ischemia/irritability, SNS, drugs, electrolytes, bradycardia, stretch (hypertrophy/enlargement) symptoms...

Pacemaker o :# SA Node Backup to SA node Impulse pauses to prevent simultaneous contraction of the atria and ventricles o :# AV Node Why is the SA node the primary pacemaker? o :# The SA node has the highest intrinsic rate of any cardiac tissue Intrinsic rate of SA node o :# 60-70 per minute Intrinsic rate of AV node o :# 50 per minute Intrinsic rate of myocardium o :# 30 per minute The wave of contraction or depolarization moves from the endocardium to the 2024/2025 2 | P a g e ...

CCI Echocardiography Practice Questions with Complete Solutions Which Aortic leaflet is the superior one in the PSLA Right Leaflet Name the tricuspid leaflets Posterior and Anterior The coronary arteries come off of the.. Sinus of Valsalva Name the vessels coming off the arch and the most proximal or distal. Innominate (proximal), left carotid, and the left subclavian (distal) What cardiac pathology is associated with bicuspid aortic valves? Coarctation of the Aorta Where do ...

What are the 6 parts of the cardiac conduction cycle? correct answer: -SA node -Internodal pathways -AV node -Bundle of His -R and L bundle branches -Purkinje fibers What is the SA node? correct answer: -Small cluster of cells located in the upper R atrium *-Pacemaker of the heart* What are internodal pathways? correct answer: Impulses sent by the SA node that travel through the atrial muscle fibers via the intra-atrial pathways Allows for simultaneous depolarization and contra...

the heart has 2 components: mechanical and __________ correct answer: electrical to fully evaluate a patient's cardiac function, you must assess _______,_______, and _______ correct answer: Pulse, pressure, ECG (EKG) electrocardiography is the study of _______ correct answer: arrhythmias repolarization represented by the ST segment and T waves occurs ________ QRS depolarization in an individual complex correct answer: after A test that creates high frequency sound vibrations tha...

NURS 480 Week 2 Test 1 Study Guide 2024 A+ Graded. Nurs 480: Week 2, Test 1 Study Guide 1. Characteristics of V- Fib and Vtach VFIB • no pulse • not breathing • HR is not measurable • Rhythm is irregular and chaotic • The P wave is not visible and the P-R interval and the QRS interval are not measurable VTach • Rate: 150-250 beats/minute • can have a pulse or may not o FIRST THING TO DO: CHECK FOR A PULSE o if no pulse get the defib right away (PICK DEFIB RATHER THAN C...

Nitroprusside purpose - Answer- decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - Answer- contractility Dopamine at a low-end dose "renal dose" - Answer- 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - Answer- 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - Answer- greater than 10mcg/kg/min vasoconstriction and increases BP Dopamine and Levophed inf...

NURS 480 Week 2 Test 1 Study Guide 2024 A+ Graded. Nurs 480: Week 2, Test 1 Study Guide 1. Characteristics of V- Fib and Vtach VFIB • no pulse • not breathing • HR is not measurable • Rhythm is irregular and chaotic • The P wave is not visible and the P-R interval and the QRS interval are not measurable VTach • Rate: 150-250 beats/minute • can have a pulse or may not o FIRST THING TO DO: CHECK FOR A PULSE o if no pulse get the defib right away (PICK DEFIB RATHER THAN C...

SPI Exam Review Questions And Answers (Updated And Verified) Ultrasound imaging type in which pulses are reflected and used to produce a display - answerpulsed wave brightness of the dots on image - answeramplitude round-trip travel time per cm in soft tissue - answer13 microseconds A line produced on a display that represents ultrasonic echoes returning from the body. A sonographic image is composed of many such lines. - answerscan line Type of image presented in a rectangular format. ...

Which of the following leads would help to record the electrical activity in the heart's horizontal plane? -Bipolar lead -12-lead ECG -Precordial leads -Unipolar leads correct answer: Precordial leads This provides a transverse view through the middle of the heart which divides it into upper and lower portions. Of the electrocardiogram waves, which would be considered the first deflection after the diastole that is produced because of the atrial depolarization? -T wave -S wave...