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ch 18 bleeding and shock

What describes a state of collapse and failure of the cardiovascular system in which blood circulation slows and eventually ceases shock
The upper and lower portions of the heart are seperated by what atrioventricular valves
What is located between the ventricules and the arteries into which they pump blood semiluner valves
The pressure in the aorta against which the left ventricle must pump blood is called what afterload
A higher afterload therfore reduces what stroke volume
what is the amount of blood ejected per contraction stroke volume
cardiac out put is = to what stroke volume x pulse rate
Increased venous return to the heart stretches the ventricles somewhat, resulting in what increased cardiac contractility
The theroy that when the heart is stretched it will contract more forecfully is known as the starling law of the heart
Although the amount of blood returning to the right atrium varies somewhat from minute to minute, a normal heart continues to pumop the same % of blood returned. This is called the ejection fraction
What is the circulation of blood within an organ or tissue in adequate amounts to meet the cells current needs for oxygen, nutrients, and waste removal perfusion
The heart needs ___________ perfusion, or it will not function properly constant
the adult male body contains how many ml of blood per kilo 70ml
the adult female body contains how many ml of blood per kilo 65ml
The body can not tolerate an acute blood loss of more the _____% the total blood volume 20%
When platelets aggregate at the site of a cut vessel plugging the hole and sealing the injured portion of the blood vessel, this is called what hemostasis
The passage of dark terry stoles is known as what melena
The passage of stools containing bright red blood is called hematochezia
In any patient with unexplained shock you should always suspect what type of shock hypovolemic shock
In an effort to maintain circulation of blood to the brain, your body will shunt blood from what tissues. List them in order from first to last Placenta, skin, muscles, gut, kidneys, liver, heart, lungs
the most common cause of exogenous hypovolemic shock is what external bleeding
the most common cause of endogenous hypovolemic shock is what internal bleeding
the body can only handle _________ _________ for a limited amount of time. anaerobic metabolism
During anearobic metabolism, incomplete ______ _______ ______ leadts to an acumulation of pyruvic acid glucose break down
what aqre the 3 successive phases of shock compensated, decompensated, and irreversible
The earliest stage of shock in which the body can still compensate for blood loss is known as Compensated shock
A stage of shock where the a BP starts to fall is what decompensated
When shock progresses to a terminal stage of shock IRREVERSIBLE
What are probably the 2 earliest signs of shock restlessness and anxiety
what may be the last measurable factor to change in shock BP
Infants and children can maintain BP until they loose ~ how much of their blood volume half
what causes weak and thready pules when the vessels are now very narrow and not much volume is moving through them
To determine how well the vital organs are being profused you must rely on the patients what state of consciousness
Created by: klindley



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