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Medical Terminology Chapter 8 Review
Medical Terminology Chapter 8 Review
48
Medical
Professional
06/16/2010

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Term
leaflet
Definition

Thin, flattened structure; term used to describethe leaf-shaped structures that compose a heart valve

Term
regurgitation
Definition

backflow or ejecting of contents through an opening

Term
vasoconstriction
Definition

narrowing of the lumen of a blood vessel that limits blood flow, usually as a result of diseases, medications, or physiological processes

Term
vasodialation
Definition

widening of the lumen of a blood vessel caused by the relaxing of the muscles of the vascular walls

Term
viscosity
Definition

state of being sticky or gummy

 

A solution that has high viscosity is relatively thick & flows slowly.

Term
arterial blood
Definition

contains a high concentration of oxygen (oxygeneated) & appears bright red in color.

 

EXCEPT for that found in the pulmonary artery.

Term
Heart
Definition

a muscular pump that propels blood to the entire body through a closed vascular system

Term
pericardium
Definition

an enclosed sac around the heart

Term
endocardium
Definition

a serous membrane that lines the 4 chambers of the heart & its valves & is continuous with the endothelium of the arteries & veins

Term
myocardium
Definition

the muscular layer of the heart

Term
epicardium
Definition

the outermost layer of the heart

Term

sinoatrial

SA node

Definition

located in the upper portion of the right atrium (RA) & posses its own intrinsic rhythm

 

commonly known as the pacemaker of the heart

Term

electrocardiogram

ECG

EKG

Definition

Graphic line recording that shows the spread of electrical excitation to different parts of the heart using small metal electrodes applied to the chest, arms, & legs

 

the sequence of those impulse contractions is as follows:

SA node --> AV node --> Bundle of His --> Purkinji Fibers

 

ECG's help diagnose abnormal heart rhythms & myocardial damage.

Term

Blood Presure

BP

B/P

Definition

measures the force of blood against the atrial walls during 2 phases of a heartbeat:

the contraction phase (systole)

the relaxation phase (diastole)

Term
systole
Definition

the contration phase of a heartbeat

 

when the blood is forced out of the heart

 

Systole produces the maximum force

Term
diastole
Definition

the relaxation phase of the heartbeat

 

when the ventricles are filling with blood

 

produces the weakest force

Term
fetal circulation
Definition

The umbilical cord contains 2 arteries of deoxygenated blood from the fetus to the placenta.

After oxygenation in the placenta, blood returns to the fetus via the umbilical vein.

This is the only other time arteries do not carry oxygenated blood.

in the pulmonary artery and in fetal circulation

Term
angi/o
Definition

vessel

(usually blood or lymph)

 

angioplasty - surgical repair of a vessel

Term
vascul/o
Definition

vessel

 

vasculitis - inflamation of (blood) vessels

Term
embol/o
Definition

embolus

(plug)

 

embolectomy - removal of an embolus

Term
embolectomy
Definition

the removal of a clot or other foreign material from a blood vessel.

 

Most emboli are blood clots (thrombi) that have been transported from a distant vessel by the blood.

Term
phleb/o
Definition

vein

 

phlebotomy - drawing blood

Term
ven/o
Definition

vein

 

venostasis - standing still of (blood in a ) vein

Term
sten/o
Definition

narrowing, stricture

 

stenotic - pertaining to a narrowing or stricture

Term
thromb/o
Definition

blood clot

 

thrombectomy - removal of a blood clot

Term
peri
Definition

around

 

pericardial - pertaining to (the area) around the heart

Term
angina
Definition
chest pain
Term
arrhythmia
Definition

cardiac irregularities

 

inability of the heart to maintain a normal sinus rhythm, (NSR) possibly including a rapid or slowbeat or "skipping" a beat

 

A.K.A. dysrhythmia

Term
syncope
Definition

loss of consciousness

 

fainting

Term
infarct
Definition
tissue death
Term
diaphoresis
Definition
profuse sweating
Term
varicose veins
Definition

enlarged, twisted, superficial veins

 

commonly in lower legs

Term
aneurysm
Definition

localized abnormal dilation of a vessel, usually an artery

Term
arrest
Definition

condition of being stopped or bringing to a stop

Term
bruit
Definition

Pertaining to the neck

 

soft blowing sound heard on auscultation, possibly due to vibrations associated with the movement of blood, valvular action, or both

Term
murmur
Definition

pertaining to the heart

 

soft blowing sound heard on auscultation, possibly due to vibrations associated with the movement of blood, valvular action, or both

Term

Deep Vein Thrombosis

DVT

Definition

blood clot that forms in the deep veins of the body, especially those in the legs or thighs

 

In DVT, blood clots may break away from the vein & travel in the body. If they lodge in the lung, the condition is called a pulmonary embolism. Pulmonary embolism may be life threatening if a large portion of the lung is damaged.

Term

Ejection Fraction

EF

Definition

calculations of how much blood a ventricle can eject with one contractionThe left ventricle (LV) EF averages 50% - 70% in healthy hearts but can be markedly reduced if part of the heart muscle dies, as evident after an MI or in cardiomyopathy or vascular heart disease.

 

 

Term
embolus
Definition

mass of undissolved matter (foreign object, air, gas, tissue, thrombus) circulating in blood or lymphatic channels until it becomes lodged in a vessel

 

An embolus could be a thrombus, BUT a thrombus is NOT an embolis.

Term
fibrillation
Definition

Quivering or spontaneous muscle contractions, especially of the heart, causing ineffectual contractions

 

Fibrillation is usually corrected with a defibrillator.

Term
hemostasis
Definition
arrest of bleeding or circulation
Term
ischemia
Definition

local & temporary deficiency of blood supply due to circulatory obstruction

Term
palpitation
Definition

sensation that the heart is not beating normally, possibly including "thumping," "fluttering," "skipped beats," or a pounding feeling in the chest

 

Although most palpitations are harmless, those caused by arrhythmias may be serious. Medical attention should be sought if palpitations are accompanied by pain, dizziness, overall weakness, or shortness of breath (SOB).

Term
Holter Monitor Test
Definition

an ECG taken with a small portable recording system capable of storing up to 24 hrs of ECG tracings

 

Holter monitoring is particularly useful in obtaining a cardiac arrythmia record that would be missed during an ECG of only a few minutes duration.

Term
embolization
Definition

Technique used to block blood flow to a site by passing a catheter to the area & injecting a synthetic material or medication specially designed to occlude the blood vessel

Embolization may serve to eliminate abnormal communication between an artery & a vein, stop bleeding, or close vessels that are supporting tumor growth.

Term

angiotensin-converting enzyme inhibitors

ACE Inhibitors

ACEI

Definition

lower blood presure by inhibiting the conversion of agotensin I (an inactive enzyme) to angiotensin II (a potent vasoconstrictor).

ACE inhibitors are used to treat hypertension alone or with other agents & aid in the management of heart failure.

Benazepril (Lotensin)

Catopril (capoten)

Term
Diuretics
Definition

act on kidneys to increase excercion of water & sodium

Diuretics reduce fluid build-up in the body, including fluid in the lungs, a common syptom of heart failure. Diuretics are also used to treat hypertension.

Furosemide (Lasix)

Term
MVP
Definition
Mitral Valve Prolapse
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