Which of the following are the cardinal signs of cardiac arrest? (A) Apnea, carotid pulses and dilated pulses (B) Pinpoint pulses, absent pulse, flushed skin (C) Cool pale skin and absence of radial pulse (D) Cyanosis, slow pulse and dilated pulses
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- 1)cardiac output is increased by A) more sympathetic stimulation only B) more sympathetic stimulation, increased end-diastolic volume, and increased stroke volume c). increased end- diastolic volume only D) increased stoke volume only E) increased end-diastolic volume and more sympathetic stimulationYour client is assessed in the emergency department with shock related to cardiac tamponade (bleeding into the pericardial cavity). What form of shock best describes your client's condition? Question 16 options: a) Distributive shock b) Cardiogenic shock c) Hypovolemic shock d) Obstructive shock40 Which of the following is the most likely effect of a 50% decrease in impulse conduction velocity through the atrioventricular node? A) A 50% decrease in heart rate B) Increased PP interval on an ECG C) Increased PR interval on an ECG D) Increased splitting of S₂ on inspiration E) Prolonged duration of the QRS interval on an ECG
- The exact cause of blood clotting in the left atrium of the heart during atrial fibrillation (AF) is not known. In part it might be due to blood stasis (not moving) or it may result in combination with endothelial cells damage. (A) What are the potential mechanisms that might drive clotting and what markers might you look for in the blood to predict potential risk? (B) Other than treating the arrhythmia, what other pharmacological intervention might be provided to AF sufferers?Which heart activity correlated with the highlighted portion of the EKG in this image? A) atrial depolarization B) right heart depolarization C) ventricle depolarization D) depolarizationThe closure of the mitral valve (bicuspid valve) A) is represented by the P wave on the EKG C) contributes to the first heart sound D) occurs when the tricuspid valve is open
- 6. The diagram shows stroke volume as a function of right atrial pressure. The solid curve shows normal cardiac function. Movement from point X on the solid curve to point Y on the dashed curve is most likely to be caused by which of the following physiologic changes? A) Decreased heart rate B) Increased afterload C) Increased vascular volume D) Increased venous return E) Stimulation of the sympathetic nerves to the heart Stroke volume (mL) 110 90- 70- 50 30 10- 1 2 3 Right atrial pressure (mm Hg) 4Which of the following would result from a decrease in aortic pressure? a) a decrease in heart rate b) a decrease in heart contractility c) a decrease in peripheral resistance d) an increase in pressure in the vena cavaea)How is one-way flow through the heart achieved and What are the stages of the cardiac cycle and the changes in pressure that occur in thechambers?b)Define how cardiac output is calculated, and what it can tell you about heart function. c. What factors influence cardiac output to maintain adequate perfusion?
- Select the TRUE statement/s: During the isovolumetric contraction phase in the cardiac cycle, OA) the SL valves are open O B) the intraventricular pressure is increasing O C) the intraventricular volume does not change OD) Both A and C OE) Both B and CSelect the FALSE statement: /////////////////www. OA) This abnormal ECG results in increased stroke volume O B) In this abnormal ECG, the ventricles are not stimulated to contract by the SA node, the natural pacemaker. of the heart O C) This abnormal ECG is compatible with life so far as the individual does not engage in strenuous activities OD) This abnormal ECG results in decreased in CO OE) None of the abovea) Define a J unctional Tachycardia. b) What is happening to the cells in the AV junction that leads to a Junctional Tachycardia?