EKG Study Guide 2022

EKG Study Guide 2023 100,000 -everyday, the average heart beats 2,000 -everyday, the average hear pumps about 11 ounces -the human hearts weights approximately clenched fist -the human heart is about the size of an adults myocardium -the heart is made up of specialized muscle tissue called 4 -the heart is divided into blank separate chambers atrium -the right and left blank make up the to portion of the heart receiving -the right and left atria are the blank chambers of the heart pumping -the right and left ventricles are the heart's blank chambers q 4 -the heart has how many valves Tricuspid, Pulmonic, Mitral, Aortic -the heart valves Tricuspid valve -is located between the right atrium & right ventricle Aortic valve -separates the left ventricle from the aorta closing -the "lub-dub" sounds heard with a stethoscope are the sounds of the heart valve right ventricle -the pulmonic valve is located between the blank & the pulmonary artery aorta, superior and inferior vena cava, pulmonary vein, artery -the major blood vessels attached to the heart include the superior vena cava -the body returns oxygen-depleted blood to the heart via the lungs -the right ventricle pumps blood through the pulmonary artery out to the Pulmonary veins -oxygen-rich blood flows to the heart though the left ventricle -the hardest working chamber of the heart is systole pressure -is the pressure inside the arteries during ventricular contraction, when blood is pumped from the heart to the body Diastole pressure -is the intra-artrial pressure during the period of ventricular relaxation Diastolic pressure -is represented by the lower of the two readings Systolic pressure -is represented by the higher of the two numbers Electrical impulses -the contraction of the heart muscle is caused by the flow of blank through the muscle tissue False -Venous blood is richer in oxygen than arterial blood T or F medulla -neurological pathways connect the heart with the blank brain bradycardia -an abnormally slow heart rate is tachycardia -an abnormally high heart rate is between the ribs -intercostal means arrhythmia -abnormal or irregular heart rhythm is bundle of his -a group of modified muscle fibers that transmit the heart's electrical impulses from the AV node to the ventricle is called aorta -the large artery connected to the heart that receives blood from the left ventricle and distributes it to the rest of the body is called infraction -death of tissue following cessation of blood supply to that issue is known as vena cava -the body's largest vein sinoatrial node -is often called the heart's natural peacemaker heart attack -a myocardial infraction is also called an ischemia -a local & temporal decrease in the blood supply to an area of tissue known as changed into a solid or semisolid state (formatting clotting) -Coagulate means pulmonary veins -the major vein that carries oxygenated blood from the lungs to the left atrium is called the coronary arteries -the arteries that branch off from the aorta & feed oxygen-rich blood to the heart muscle are True -Patient psychology can be more important in obtaining a diagnostically pure EKG than the mechanics of administering the EKG True or False True -EKG can be used to evaluate the function of the artificial pacemakers True or False Septum -the muscular wall that separates the left & right sides of the heart is the Valves -regulate the flow of blood into & out of the proper chambers Green -what is the color code for the lead wire to the right leg Lungs -the blood exchanges carbon dioxide (CO2) for oxygen is the Contract momentarily -ATP (adenosine triphosphate) is a substance that causes the muscle of the heart to False -the electrocardiograph can be used to determine blood pressure True or False .5 seconds -the time normally required for one cardiac impulse & recharging of cells is False -The EKG records the actual image of the heart True or False Reference -the right leg electrode is called the ground, blank electrode Einthoven's Triangle -the three limb leads form a triangle called equidistant -lead 1, 2, 3 are electrically blank from the heart electrical activity right leg -the negative pole is always on the Left arm -the blank electrode is positive in lead 1 and negative in lead 2 right arm -lead 1 records different in electrical potential between the left arm & the blank arm right arm -lead 2 records different in electrical potential between the left leg and the blank arm Augmented leads -the three additional leads that record frontal plane activity are called augmented voltage -augmented leads are designated by a VR, a VL, and a VF, "aV" stands for right to left -the chest leads are numbered v1 to v6 and move in successive steps from patient's blank to blank chest leads -record the third dimension of the heart, from front to rear, is the function of the relaxation -the EKG is a recording of the electrical impulses associated with cardiac contraction and False -the EKG is a method of recording the heart's strength true or false time -the EKG records the amount of voltage generated by the heart and the blank requires for that voltage to travel resting -polarized activity simply refers to the heart depolarization -the activity of the heart during the impulses that causes contraction, but no the contraction itself, it is known as repolarization -the electrical recovery of the heart as the cells recharge themselves is known as atrial -the p wave represents blank depolarization relaxation -the PR interval is the lapse in time between the onset of atrial contraction and the onset of ventricular 60 -QTC= QT + 1.75 (rate blank) baseline -when there is no electrical activity in the heart, the EKG has nothing to record so the tracing returns to the zero voltage line known as electrical impulses of the heart -the EKG is a recording of Depolarization, repolarization, -what can be measured by the EKG No -does the absence of a Q wave of an S wave indicate cardiac abnormality William Einthoven -the first model of a device for recording cardiac voltage was developed by True -the first electrocardiograph weighted 600 pounds and required a team of operators True or false Filtering -which is not a function of the elecocardiograph second opinion -although it does not replace a physician interpretation of the EKG, the computerized interpretation is helpful as a bradycardia -an abnormally slow heart slow heart rate is known as tachycardia -an abnormally high heart rate is known as very rapid -speed selection affects the rate at which the paper runs during the EKG, increased speed is useful when the heart rate is 5 yrs -the legal requirements for saving EKG printouts is 25mm -the accepted standard paper speed is relaxed -one of the most important factors in obtaining a good EKG is to keep the patient False -skin is a very good conductor of electricity before -always apply the electrodes blank entering the patient information into the electrocardiograph lead 1 & a VR -to check for a reversal of arm electrodes look at True -intercostal means between the