EKG, Hemostasis, and Hematology Fundamentals Part 3
Topics include EKG interpretation (P-wave, RR interval, SA node function), stages of hemostasis, blood vessel anatomy, blood composition, and common laboratory procedures like electrophoresis and occult blood testing. Ideal for students in phlebotomy, nursing, or medical assisting programs preparing for clinical assessments or certification exams.
serous fluid
prevents friction as the heart beats
Key Terms
serous fluid
prevents friction as the heart beats
recieves deoxygenated blood returning to the heart from the body
Right Atrium
recieves deoxygenated blood from the right atrium which it pumps to the lungs throguh the pumonary artery
Right Ventricle
receives oxygenated blood from the left atrium and pumps it to the body thru the aorta
Left Ventricle
The av valves
Tricuspid and Mitral (bicuspid ) valves
The Semilunar valves
Aortic and pulmonic
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
serous fluid | prevents friction as the heart beats |
recieves deoxygenated blood returning to the heart from the body | Right Atrium |
recieves deoxygenated blood from the right atrium which it pumps to the lungs throguh the pumonary artery | Right Ventricle |
receives oxygenated blood from the left atrium and pumps it to the body thru the aorta | Left Ventricle |
The av valves | Tricuspid and Mitral (bicuspid ) valves |
The Semilunar valves | Aortic and pulmonic |
Valve located between the left atrium and the left ventricle | Mitral or bicuspid |
Valve lovated between the right ventricle and the pulmonary trunk | pulmonic valve |
heart sounds produced by closure of the valves | murmors |
caused by diseases of the valves or other structural abnormalities | Murmors |
First heart sound due to the closure of the mitral and tricuspid valves | S1 in the upper chambers or the atria |
S2 in the ventricles | second heart sound due to the closure of the aortic and pulmonic valves |
arteries supplying the heart | right and left coronary from the aorta |
Arteries supplying the heart | right and left coronary from the aorta |
The ans or autonomic nervous system is subdvided into | sympathetic and parasympathetic nervous system |
The SP or sympathetic nervous system affects | both, the atria and the ventricles by increasing heart rate conduction and irritability |
The pns or parasympathetic nervous system affects | atria only by decreasing heart rate, conduction and irritability |
Automaticity | ability of the cardiac cells to initiate own electrical impulses without outside stimulation |
Excitability or irritability | ability of cardiac cells to respond to external stimulus |
Contractility | ability of cardiac cells to shorten (muscle contraction) in response to electrical stimulus |
Digitalis, dopamine, epinephrine | Drugs that increase the contractility of the heart |
Results in myocardial relaxation | repolarization |
Consists of anterior, middle and posterior divisions that distribute electrical impulses by SA to AV node | Internodal pathway |
This fires at 20-40 bpm | Purkinje fibers |
limb leads consist of | 3 bipolar and 3 augmented leads |
These record electrical potentials in the frontal plane | Lead I, Lead II, Lead III and the chest leads |
On Lead III, which is the positive lead | the left leg is positive |
Which limb is always the ground | right leg |
Waveform | movement away from the isoelectric line either positive or negative |
Interval | waveform plus a segment |
Complex | Several waveforms |
The normal P wave in standard and precordial leads does not exceed | 0.11s in duration or 2.5 mm in height |
The vertical axis on the ekg paper measures | Amplitude or voltage |
J (RST) junction | point at which QRS complex ends and the ST segment begins |
ST segment | from J point to the onset of the T wave |
Normal indication for a stress test | Evaluation of a patient withchest pain and a normal ekg, arrythmia, monitoring a pt, with a recent MI |
The percentage of the target heart rate during a stress test that makes it valid | 85% |
Hematocrite is made up of | hemoglobin x 3 |
Define hematocrit | The percentage by colume of packed red blood cells in a given sample of blood after centrifugation |
Opposite of anemia | polycythemia |
When taking a pharmacologic stress test, it is concluded when | 85% of the target rate is achieved |
Drugs used for a pharmacologic stress test | adeosine, dipyridamole, dobutamine |
Ectopic Rythms | electrical impulses originating from somewhere else but the SA node |
Pre-excitation Syndrome | Electrical impulses of the heart bypass the normal pathway and instead go down an accessory shortcut |
Conduction Block | electrical impulses go down but encounter blocks and delays |
Indication for temination of a stress test | SOB (shortness of breath), chest pain, dizziness, blood pressure abnormalities |
Ischemia | decrease in amount of blood flow |
What is the hallmark of a infarction | The presence of abnormal Q waves |
List some cardiac markers | Triponin, CK, LDH, SGOT, AST |
What is a negative holter? | A negative holter will have no significant arrhythmias or ST changes |
How long is a holter monitor worn? | 24 hours or longer |
Why is a holter monitor done? | To rule out arrhythmia's or ischemia |
How many electrodes are on a holter monitor | 5 |
A positive holter is one that recorded at least one or more of these abnormalities | Tachy or bradycardia, ST segment elevation or depression, pauses |
When is the event monitor used? | Oxigen, Epinephrine, Isoproterenol, Dopamine (Intropin) Beta blocker (olol), Lidocaine, Verapamil, Digitalis, Morphine, Nitroglycerin |
What is a powerful smooth muscle relaxant with the side effect of headache | Nitroglycerin patch or SL |
Digitalis does | increases the force of cardiac contractions as well as cardiac output, tocicity in 20% of patients |
Butterfly | Winged infusion set |
What is the most important task of a phlebotomist | patient ID |
With the bevel upward insert the needle at which angle? | 15-30 degrees |
Prandial | Fasting |
What is important to do first after dermal puncture? | Wipe away the first drop |
Timed specimens | Hormone levels, blood levels of medications, monitor PT condition E.G. Hemoglobin level *internal bleeding ) |
While administering a OGTT it is important to take what with each sample | Urine Sample |
When are OGTT scheduled to begin? | 0700-0900 7-9am |
The two hour postprandial test is used for? | evaluation of diabetes mellitus |
The OGTT test is used for ? | Diagnosing diabetis mellitius and evaluating patients with frequent low blood sugar |
The 3 hour OGTT is used to test for | To test for hyperglycemia |
The 5 hour OGTT is used for | To test for hypoglycemia, for disorders of carbohydrate metaolism |
PKU | Tests for babies and to detect phenylketouria, a genetic disease that causes mental retardation and brain damage |
Cold Agglutinins | Antibodies produced in response to atypical pneumonia must be kept at 37c |
ABG, AMMONIA, lactic acid, pyruvate, parathyroid test handling | Chilled in crushed ice and water mixture |
Billi | Bile |
Which blood tests can NOT be done using dermal puncture | ESR, BC |
You have the right to caring staff who believe your reports of pain | Example of the patient bill of rights for pain management |
Method of taking pulse used on children and patient with irregular heartbeat | Apical pulse |
Orthopenia | Difficulty breathing when laying flat |
Define Cheyne- Stokes | Regular pattern of irregular breathing rate |
Medical Assistant role in the physical examination | Room prep, patient prep, assisting the doctor |
Hazards | Physical, chemical , biological |
This technique is not permitted in the lab | Never draw a pipette by mouth |
Expresionless face and staring eyes are indications of | Shock |
Agents are | Any infective microorganisms, viruses,fungi, bacteria, and parasites |
Define common vehicle | Water, food, drinking from the same glass, kissing |
What fires at 40-60 bpm | AV junction, bundle of HIS |
Which are unipolar leads? | aVR, aVL, aVF |
Which test is used to evaluate primary hemostasis | Bleeding time test |
How long is the lifespan of a platelet? | 9-12 days |
When the vaccutainer method can not be used you would use | 10-12ml Syringes |
Which tube nmust be filled completely? | Light Blue sodium citrate tube to maintain a ratio of 9:1 |