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EKG, Hemostasis, and Hematology Fundamentals Part 3

Nursing90 CardsCreated 4 months ago

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

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Key Terms

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

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TermDefinition

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