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- 29 of 30 I Review Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heartbeat. Rank from first to last. Do not overlap any tiles. • View Available Hint(s) AV node Purkinje fibers SA node AV bundle Internodal pathways Bundle branches First Element Depolarized Last Element Course Chat MacBook Pro1. is the rhythm regular or irregular 2. determine the heart rate 3. do you have p waves before every QRS 4. Measure the PR interval 5. Measure the QRS duration 6. Are there any early or extra beats 7. is there normal r wave progression in V1-V6? 8. Are the ST segments elevated or depressed? 9. Are there any abnormal Q waves? 10.. Are the T waves of normal size? 11. Are there any U waves? 12. Is there evidence of myocardial ischemia, injury, or infarction? 13. Name this EKG.es) V 11. Trace the flow of impulses through the conduction system (step by step) and include at what points the following happen: 2 atria contract together 000 P F4 ● ● AV node delay occurs • interventricular septum contracts the outer walls of the 2 ventricles contract together ● F5 SEP 20 MacBook Air F6 F7 Focus ▶11 F8 BO F9 =I F10
- The most common forms of distributive shock include all of the following EXCEPT: O Cardiogenic shock O Septic shock O Neurogenic shock O Anaphylactic shock The type of shock associated with inadequate tissue perfusion resulting from myocardial dysfunction is: O Obstructive shock O Distributive shock O Hypovolemic shock O Cardiogenic shock The acute treatment of shock consists of all of the following EXCEPT: O Starting therapeutic hypothermia O Optimizing oxygen content of the blood O Improving volume and distribution of cardiac output O Correcting metabolic imbalances of crystalloid For fluid resuscitation in hemorrhagic shock, give about for every of blood lost. O 3 mL, 2 mL O 2 mL, 3 mL O 1 mL, 3 mL O 3 mL, 1 mL The consensus definition of hypoglycemia in children and infants is: O Less than or equal to 60 mg/dL O Less than or equal to 50 mg/dL O Less than or equal to 40 mg/dL O Less than or equal to 80 mg/dL What is the primary therapy for hypovolemic shock? O Antibiotics O Fluid…Describe how the healthcare team differentiates between myocardial infarction and angina. There should be a minimum of 3 waysReferencing the ECG trace below, when would you expect the AV node to start depolarizing? options: P R Q S QT Interval T Right before the T wave. Some time during the PR interval. Right before the P wave. Right after the QRS complex. RR Interval P R S QT Interval T
- A 69-year-old woman presents with crushing substernal chest pain and nausea. Laboratory studies show elevated serum levels of cardiac proteins (CK-MB = 8.5 ng/mL; troponin-I = 3.2 ng/mL). A diagnosis of myocardial infarction is confirmed by ECG. Despite treatment, the patient becomes hypotensive and resuscitation attempts are unsuccessful. A cross section of the patient's right coronary artery at autopsy is shown in the image. Which of the following pathologic changes are evident in this autopsy specimen?A 69-year-old woman presents with crushing substernal chest pain and nausea. Laboratory studies show elevated serum levels of cardiac proteins (CK-MB = 8.5 ng/mL; troponin-I = 3.2 ng/mL). A diagnosis of myocardial infarction is confirmed by ECG. Despite treatment, the patient becomes hypotensive and resuscitation attempts are unsuccessful. A cross section of the patient's right coronary artery at autopsy is shown in the image. Which of the following pathologic changes are evident in this autopsy specimen? (A) Arteritis and atherosclerosis (B) Atherosclerosis and thrombosis (C) Microaneurysm and canalization (D) Thrombosis and calcification (E) Vasodilation and arteritisWhich of the following best describes Acute Coronary Syndrome? Question 8 options: Symptoms of acute myocardial ischemia Vasovagal response Blood pressure reading > 180/120 Platelet degradation
- 3. Evaluate the following statements as true or false T/F T/F T/F T/F T/F Jet lesions are most common in the left ventricle The tricuspid is situated between the left atrium and left ventricle The endocardial layer is thickest in the atria Systole is when semilunar valves close to prevent blood backflow into the heart The sinoatrial and atrioventricular nodes are similar histologicallyWrite a thesis and discussion for the following question: Do cardiac comorbidities significantly influence HFrEF trajectory more compared to non-cardiac morbidities?Select TRUE or FALSE to best describe the statements below, relating the events of the cardiac cycle. Keep in mind that these events may be chemical, electrical and mechanical. atrial pressure is greater than ventricular pressure while semilunar valves are оpen ventricular pressure is greater than atrial pressure when the atrioventricular valves are closed atrioventricular valves are open during ventricular emptying the end diastolic volume of the ventricles is reached before ventricles contract 1 ventricular filling occurs before depolarization of the atria 1 atrioventricular valves and 1. TRUE 1 semilunar valves are closed at the beginning of ventricular systole 2. FALSE end systolic volume increases when more blood empties from the ventricles the greatest pressure is reached in the ventricles while they are emptying the right atrium depolarizes before the left atrium ventricular depolarization occurs during the T-wave semilunar valves are open during ventricular filling ventricular…