Hemodynamic Flashcards

1
Q

What’s the relation between blood volume and blood pressure?

A

Proportional why?
Increase blood volume>inc. VR> inc. arterial pru>EDP>preload and SV>pulmonary venous blood>left vent. Preload and SV>inc. COP>arterial bloodP
يعني باختصار إذا أحد جاني بشوك أنا ممكن أعطيه فلود يرفع ضغطه ☺️

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Another relation between blood volume and blood pressure?

A

ممكن أنا أزيد الفرق بين الضغط عشان أزود blood flow
Like the aorta has the maximum pressure going through other tissue with low pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many laws we have?

A

4 ohms. Poiseuille’s. Bernoulli. Law of laplace

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What’s ohms law

A

Q= gradient P/R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What’s poiseuill law

A

the flow rate depends on several factors
Q= bi Pr4/ 8nL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is Bernoulli principle?

A

ما يهمه التغيير كثر ما يهمه ان الناتج يكون ثابت يعني
Sum of kinetic(velocity) and potential(pressure)remain constant
مثال
لو زادت السرعة الضغط يكون قليل والعكس صحيح

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is Bernoulli application?

A

‏لازم نفهم أن السرعة حقت الدم إذا جات بتمر من مكان ضيق لازم تزيد من سرعتها وتحاول تدخل من المكان الضيق هذا وبالتالي الضغط لازم يقل عشان يكون الناتج ثابت مثال تصلب الشرايين لكن لو قلت السرعة وزاد الضغط هذا ممكن يؤدي إلى aortic aneurysm rupture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is low of laplace?

A

T=PR(dimeter)
كل ما زاد dimeter increases the tension
Like aneurysm, they expand and develop high wall tension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the relation between velocity and total cross-sectional?

A

Inversely proportional
كل ما زادت مساحة السطح تقل السرعة وهذا شيء كويس في capillaries to promote the exchange
But in aorta so fire

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Mention the two types of blood flow

A

Let me know, flow or streamline flow (smooth,quite) and turbulent flow (disturbed irregular)
ثاني واحد هو لما يمر من مكان (ضيق)يكون في ستريت لاين بس (الفرج) يكون مبعثر

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What cause the turbulent flow?

A

هو أصلاً إذا لقى مكان واسع يكون فيه زي إيش؟
قلنا aneurysm because it’s expanding
Increases velocity بالحامل
Decreasing viscosity بالانيميا
وباقي أسباب شوفيها

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is series circuit?

A

تسلسل يعني يكون فيها
Total resistance = R1+2+3 زي كذا وكل ما نزيد تزيد المقاومة معنا
ودائمًا المجموع يكون اعلى من كل مقاومة لحال
طيب تفيدنا بأيش؟ سلايد ٢١

How well did you know this?
1
Not at all
2
3
4
5
Perfectly