Shock Flashcards
(52 cards)
ولقد كنتُ في حلاوة طلَبِ العلم أَلْقى من الشَّدائد ما هو أحلى عندي من العسَل في سبيل ما أطلبُ وأرجو، وكنتُ في زمن الصِّبا آخذُ معي أرغفةً يابسة، ثم أذهب به في طلب الحديث، وأقعد على نهر عيسى، ثُم آكل هذا الرَّغيف، وأشرب الماء، فكلَّما أكلتُ لقمةً شربتُ عليها
إن الله كتب الإحسان علي كل شئ
Give defintion to Circulatory SHOCK .
It isdecreased perfusion to the tissue and the blood oxygen and nutrients epscailly the vital organan like brain hindring tissue from doing theri metabolic functions
Types of SHOCK ?
نمت وأدلج الناس !
Hypovolemic cold shock
Low resistance shock decrased TPR ( Vasogenic ,distributive shock)
Cardiogenic shock
other shocks
The ABP is not a measuer for tissue perfusion why?
this is becasue decreasing in abp casue reflex vasoconstriviton casuing decreasing blood perfusion of tissue woeseining shock
Explain hypovolemic shock .
It is shocke due to decrease in blood volume due to
1-Hemorrhage
2-Vomitting and diarrhea
3-burns
this decreases MCP and VR and COP DECRASING ABP
The compensatory mechanism by/??\
vc of splanchnic git and skeletal vessels
عشان يوفر الدم للقلب والدماغ !
causing cold pain skin
Cardiogenic shock definition
A shock resulted from weakness of the pump function of the hear despite good VR and filling but the COP is reduced like in massive myocardial infarction
the compensatory mechanism is VC of cutanuous blood vessel leaving cold pale skin
Low resistance shock mean ?
it is a shock not due to blood volume or pump prboelms but becasue VD of peripheral vasculture casuing decreasing TPR and incrasing vascular capacitness anddecrasing mean circulatory pressure calle warm shock caues the extremities are not cold as hypovolemic shock both MCP AN TPR MEANT VR AND COP AND MAP ' its casuses are diveded into 1-neurogenic 2-anaphylactic
Deep general anethesia and shock ?>
it casuses depression of the VMC neurogenic shock low resistence
spinal shock explain.
shocke due to loss of sympathatic tone due spinal anethesia or spinal cord lesion blocking the sympathatic out flow to vessels and the vc tone decreasing TPR and MCP and COP ABP
POTENT CAUSE OF NEUROGENICS
Brain damage can cause shock ?
yes in case of brain damage contusion or concussion to the basal are there is ischemia and stimulation of VMC incresing ABP 5-7minutes if prolonged this leads to inactivation of VMC tpr and cop and abp casuing neurogenic shock
Define/generalized vasodilation
a case caused by the symphatatic cholinergic fibers of hypothalamus and this leads to genral VD decreasing TPR ABP NEUROGENIC SHOC K
Mention neurogenic shock
-deep general anethesia
-spinal shock
-brain damage
-generalized VD
GBS DEEP
Discuss Anaphylactic shock as atype of low resistance shock
When a person is sensitized to antigen and reexpoed to it this leads to
degranulation of Mast cells and Basophils releasing histamine VD substances
causing arterilodilation and capillary shift fluid casuing hypovolemia
the hypotension may be severe casuing circulatory collapse
incompitable blood transfusion
How does septic shock take the characatetstics of other 3 types of shock ?
Septic shock is in case of sepsis = septicemia the bacatrail infection + its endotoxins running in blood casuing fever and increased tissue demands from o2 and nutrient
it is like :بيضرب مساحة الوعاء والقلب كذلك
1-low resistance shock becasue toxins casue generalized VD decrasigng TPR and VR and causing decreased ABP and low perfusion يقلل سرعة وصول الدم للانسجة
يزود الدم للانسجة الميتة والتعبانة ويقلله للانسجة السليمة
Hypotension is due decrased both MCP and TPR Dure to vasodilation on veins and arteries
2-hypovolemic shock : the vasodilation of arteriole increases pressure in capillaries casuing fluid shif into ISF
3-Cardiogenic shock : toxins casue cardiac depression
Explain traumatic shock ?
Occur when there is sever damadge to tissue like bonea and muscles in wars or accidents causing
internal bleeding or external hemorrahge :hypovolemic shock
the severe pain casues neurogenic shock
combination of shocks in Surgical shock mention
surgical shock in case of surgical operation causing
hypovolemic shock : internal bleeding +external hemorrhage
low resistance shock neurogenic: due to severe pain
dehydration
Stages of shock mention
-Non progrssive compensated no tratment spontanupusly
progressive decompensated treatment aid
Refractory there is no use , treatment no recovery
Cardiogenc and low resistance shock cannot be compensated GR.
becasuse compensatory depednds on heart and vascular respones
Cardiogenc and low resistance shock cannot be compensated GR.
becasuse compensatory depednds on heart and vascular respones
GR/ Hypovolemic shock can be compensated ?
this is due to no problems in the heart or vessels
and the compensatory mechansimsd epednds on heart and vascular respones
Define non progressive shock ?
it is compensated ! where the circulatory compensatory mechanisms can work to return the normal state of circulation wihtout aid from the out side by
incraseing ABP immediate Onset
Increasing BV delayed onset
Define non progressive shock ?
it is compensated ! where the circulatory compensatory mechanisms can work to return the normal state of circulation wihtout aid from the out side by
incraseing ABP immediate Onset
Increasing BV delayed onset
Define progressive shock ?>
Decompensated in which
the the shock without outside treatment will lead to worsen of the state till death
The irrversible shock?
Refractory shock which even if you give the patient treatment is is no use and he will die even in the moment the patient is still alive
Discuss decompensatory mechanisms .
There is decrased in MAP and this leads to inteses sympatahtic activity and its vasoconstriction but ! still the Organ blood flow is low ? this affect vital organs as follow: The Heart > Myocardial failure the Git and Liver > 1-Mycoardial depressant >Myocardial failure 2-accumulation of toxins The kidney Electorlyte imbalance the other organs acidosis VD mechanisms
A-the affect on heart dierctly and by the myocardial depressant from pancreas casuser myocardial failure decreasing COP AND MAP
B-the effect of
accumulation of toxin
Electorlyte imbalance especially hyperkalemia >arryhtmia
acidosis VD mechanisms
periciptate :
1-Myocardial failure > dec cop > MAP
2-decrasinG Venous tone and MCP and VR and COP
3- DECRASING Artriolar tone decraesing the TPR AND MAP
AND CAPILLARY FILTRATION DECREASING VR and cop