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EKG-
ekg rythms and cardiac diseases
Question | Answer |
---|---|
The normal PRI length | 0.12-0.20 |
The p-wave looks like this | upright and smooth |
the rate of sinus tachycardia | greater than 100 |
the rate of sinus bradycardia | less than 60 |
when everything is the same as normal sinus rhythm exept that the rythm is irregular | sinus arrythmia |
the normal QRS should be this measurement | less than .12 |
reasons for a patient to have Atrial fibrilation | underlying heart disease,CHF, rheumatic fever |
the rate of atrial fibrillation | 350-400bpm |
the rate of atrial flutter | 250-300bpm |
checking the heart rate on a six second strip and multiplying it by ten gives you this | ventricular heart rate |
the segment between the QRS complex and onset of the t wave is this | ST segment |
when the PR interval is greater than 0.20 seconds | first degree block |
the lower chambers of the heart | ventricles |
the upper chambers of the heart | atria |
two-layered sac surrounding the heart | pericardium |
inflammation of the serous pericardium | pericarditis |
the smooth outer surface of the heart | epicardium |
the thick middle layer of the heart | myocardium |
the innermost layer of the heart | endocardium |
the valve located between the right atrium and right ventricle | tricuspid valve |
the valve located between the left atrium and left ventricle | bicuspid |
thick walled and muscular blood vesselsthat function under high pressure to convey blood from the heart out to the rest of the body. | arteries |
drains blood from the head and neck | superior vena cava |
drains blood from the rest of the body except the head and neck. | inferior vena cava |
blood vessels that carry blood back to the heart | veins |
tiny blood vessels that allow for the exchange of oxygen, nutrients,nutrients, and wastes products between the blood and the body | capillaries |
the heart is located here | mediastinum |
the lowest chamber of the heart with the thickest myocardium | left ventricle |
the amount of the blood pumped by the heart in one minute | cardiac output |
ventricular relaxation | diastole |
the volume of blood pumped out of the heart of one ventricle of the heart in a single beat or contraction | stroke volume |
the heart has this many chambers | four |
the ability of cardiac pacemaker cells to generate their own electricle impulses spontaneously without external stimulation | automaticity |
the ability of cardiac cells to respond to an electrical stimulus | excitability |
the ability of cardiac cells to receive an electrical stimulus and then transmit it to other cardiac cells | conductivity |
ability of cardiac cells to shorten and cause cardiac muscles contraction in response to an electrical stimulus | contractility |
pacemaker of the heart | SA node |
the region where the AV nosde joins the bundle of his | AV junction |
a network of fibers that carries electrical impulses directly to ventricular muscle cells | purkinje's network |
an adhesive pad that contains conductive gel and is designed to be attatched to the patient's skin | electrode |
the printed record of the electrical activity of the heart | EKG strip |
abnormal heart rhythms | dysrhythmias |
represents depolarization of the left and right atria | p wave |
represents the time interval necessary for the impulse to travel from the SA node through the internodal pathways in the atria and downward to the ventricles | PR interval |
the time interval during which the ventricles and depolarized and ventricular repolarization begins | ST segment |
represents ventricular repolarizationa nd follows the ST segment | T wave |