Normal conduction pathway - Study guides, Class notes & Summaries

Relative refractory periods - ️️occurs towards the end of the T-wave when most ventricular cells are repolarized and vulnerable to new stimuli; can lead to VT if PVC lands during this time Refractory = resistant Supraventricular Tachycardia (SVT) - ️️§ regular but fast rhythm § rate 150-250 § P wave merged with T wave § PRI variable & difficult to measure § QRSà typically narrow § Common causes: stimulants, electrolyte imbalance, hypoxia Sinoatrial Node (SA node) Rate? ...

Med Surg II Exam 1 Questions and Answers Latest Updated Version. FOCUS POINTS EXAM 1 CARDIAC (MED SURG II EXAM 1) Dysrhythmias Abnormal heart rate or rhythm Caused by a disturbance in electrical conduction of the heart, not by abnormal heart structure May be benign or have lethal consequences Cardiac output = stroke volume x HR Patho ● 5 unique properties of cardiac cells ○ Automaticity → spontaneously initiate an electrical impulse ■ Changes in automaticity cause tachydysrhyth...

Exam 1: Dysrhythmias Study Guide Review Questions and Answers/ A+ Score Solutions . Terms like: Normal Sinus Rhythm - Answer: This refers to a rhythm that starts in the SA node at a rate of 60-100 times per minute and follows the normal conduction pathway

Exam 1: Dysrhythmias Study Guide Review Questions and Answers/ A+ Score Solutions . Terms like: Normal Sinus Rhythm - Answer: This refers to a rhythm that starts in the SA node at a rate of 60-100 times per minute and follows the normal conduction pathway

Which of the following would best enhance resolution of evoked potential waveforms? - Increase number of averaged stimuli What is the typical MINIMUM common mode rejection ratio of in-phase signals recommended for evoked potential instruments? - 10,000:1 Which of the following cranial nerves is most at risk during acoustic neuroma surgery? - CN VII The impedance of cup electrodes is: - Lower than needle electrodes because of their size Amplitude of an evoked potential depends on which of...

3 pacemakers of the heart - 1. SA node 2. AV node 3. bundle branch intrinsic rate of SA node - 60-100 bpm intrinsic rate of AV node - 40-60 bpm intrinsic rate of bundle branches - 20-40 bpm electrical pathway through the heart - 1. normal conduction impulse originates in the *SA Node* 2. impulse travels to *AV Node* causing atrial depolarization (contraction)

Med Surg II Exam 1 Questions and Answers Latest Updated Version. FOCUS POINTS EXAM 1 CARDIAC (MED SURG II EXAM 1) Dysrhythmias Abnormal heart rate or rhythm Caused by a disturbance in electrical conduction of the heart, not by abnormal heart structure May be benign or have lethal consequences Cardiac output = stroke volume x HR Patho ● 5 unique properties of cardiac cells ○ Automaticity → spontaneously initiate an electrical impulse ■ Changes in automaticity cause tachydysrhyth...

CNIM TEST STUDY GUIDE In BAEP's, cochlear nucleus lesion causes? - Increased III-V, increased I-V Which modality is most useful in monitoring the integrity of the corticospinal tracts during resection of an intramedullary spinal cord tumor? - D-Waves The stimulus used in a brainstem auditory evoked potential study is a click with a peak acoustic power in the range of - 2000 to 4000Hz Which of the following tibial nerve responses is not a near field response? - N31 How many ampe...

Med Surg II Exam 1 Questions and Answers Latest Updated Version. FOCUS POINTS EXAM 1 CARDIAC (MED SURG II EXAM 1) Dysrhythmias Abnormal heart rate or rhythm Caused by a disturbance in electrical conduction of the heart, not by abnormal heart structure May be benign or have lethal consequences Cardiac output = stroke volume x HR Patho ● 5 unique properties of cardiac cells ○ Automaticity → spontaneously initiate an electrical impulse ■ Changes in automaticity cause tachydysrhyth...

Comprehensive CRNA Interview Review Accurate responses are given. Comprehensive CRNA Interview Review Norepinephrine Mechanism of Action (MOA) A1, A2, B1 agonist. Primary agent used in distributive shock because it's ability to recruit venous volume and augment preload, while increasing arterial tone, and increasing cardiac output. Alpha one causing peripheral smooth muscle contraction. (low dose venous, high dose venous and arterial). Alpha 2 adrenoreceptor agonism actually ant...