Which intervention or interventions would have the MOST positive impact on the cardiac arrest patient's outcome? ✔✔ Early CPR and defibrillation The AED gives "no shock" message to a patient who is in cardiac arrest. You should: ✔✔ Resume chest compressions What is the maximum amount of time that should be spent checking for spontaneous breathing in an unresponsive child? ✔✔ 10 seconds When performing CPR on an adult, you should compress the chest to a depth of ___ at a rate of ___. ✔✔ 2.0-2.4 in, 100-150BPM What is the appropriate compression to ventilation ratio for adult two-rescuer CPR? ✔✔ 30:2 When checking for a pulse in an infant, which artery should you palpate? ✔✔ Brachial When performing CPR on an adult or child, you should reassess the patient for return of respirations/circulation every ____ minutes. ✔✔ 2 What is the preferred method of removing a foreign body in an unresponsive child? ✔✔ Chest compressions Cardiogenic shock is caused by: ✔✔ Inadequate function of the heart muscle Pericardial effusion ✔✔ Collection of fluid between the pericardial sac and the myocardium Cardiac tamponade ✔✔ Occurs when blood leaks into the space between the pericardium and the pericardial sac Signs and symptoms of cardiac tamponade: ✔✔ Beck triad: the presence of jugular vein distention, muffled heart sounds, and a narrowing pulse pressure where the systolic and diastolic blood pressures start to merge. Signs of cardiogenic shock: ✔✔ -Skin may be cool, clammy, and ashen -High BP -Rapid, shallow breathing -Weak, irregular pulse -Anxiety, nausea You arrive on scene to find a conscious 58YOF sitting up and reporting severe chest pain and SOB. She is anxious and "feels like she's going to die." Her skin is pale, cool, and clammy and her pulse is rapid, weak, and irregular. Her breathing is labored, with a RR of 28 breaths/min. Her SpO2 is 90%. Lung sounds show crackles in all fields, and BP is 92/60 mmHg. What is your differential diagnosis of the patient? ✔✔ Cardiogenic shock The heart is divided down the middle into left and right sides by the: ✔✔ Septum Which chamber of the heart receives incoming unoxygenated blood? ✔✔ Atrium Which chamber of the heart pumps oxygenated blood? ✔✔ Ventricles Normal electrical impulses begin in the: ✔✔ Sinoatrial (SA) node What characteristic allows a cardiac muscle cells to contract spontaneously without an external stimulus? ✔✔ Automaticity The sympathetic nervous system acts on the body by: ✔✔ -increasing HR and RR -constricting blood vessels in the muscles The parasympathetic nervous system acts on the body by: ✔✔ (directly opposes the sympathetic NS) -decreases HR and RR -constricts blood vessels in muscles Increased oxygen demand in a normal heart is supplied by ______ of the coronary arteries. ✔✔ Dilation The heart itself is supplied by blood through what vessels? ✔✔ Coronary vessels The iliac arteries descend into the: ✔✔ femoral arteries Which veins bring blood back to the right atrium? ✔✔ Venae cavae Systolic pressure is the: ✔✔ maximum pressure generated in the arteries during contraction of the left ventricle Pulses felt in the extremities are called: ✔✔ Peripheral pulses Pulses felt near the trunk of the body are called: ✔✔ Central pulses Decrease in blood flow to the heart is called: ✔✔ ischemia