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Old 10-08-2015
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Default HELP! what factors increase or decrease resistance?

im having trouble with cardiac physiology

what factors increase or decrease resistance?

I dont get how squatting or hand gripping etc affect resistance

exam is two weeks away
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  #2  
Old 10-08-2015
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Quote:
Originally Posted by Virgo11 View Post
im having trouble with cardiac physiology

what factors increase or decrease resistance?

I dont get how squatting or hand gripping etc affect resistance

exam is two weeks away
Squatting increases systemic vascular resistance. Kids do it when they have tet of fallot which is a right to left shunt due to the pulmonary artery stenosis and a ventricle septal defect in which the shunt passes through. When kids squat and increase systemic vascular resistance, this increases pressure in the left ventricle to create a left to right shunt to force the blood passed the stenosed pulmonary into the lungs
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Old 10-08-2015
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Ok so here's what happens.
When you squat the arteries get compressed, mainly the iliac arteries and the arteries in the leg. When you hand grip, your muscles are contracted and this compresses the vessels in them. Both these manoeuvres increase total peripheral resistance.

I see that you got 197 on NBME 17. I suggest you postpone the exam.
You strategy should be to understand concepts perfectly so that even if you don't read it ever again you will still remember it.
When it comes to plain facts, find out the reason behind it too. For example, pregnancy is a cause for DIC. Now you can just mug it up or know that amniotic fluid can activate tissue factor and thus cause DIC.
And then there are numbers like ILs, genes and such stuff. The key with these is repetition.
Finally, read for at least 8-10 hours everyday and take at the most 1 day off a week so that you finish studying in the least possible time, else you will forget what you studied long back because you are only human.
Stick to UW, FA and Kaplan/DIT whichever u have been reading.

Last edited by datson; 10-08-2015 at 06:54 PM.
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Old 10-08-2015
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Originally Posted by datson View Post
Ok so here's what happens.
When you squat the arteries get compressed, mainly the iliac arteries and the arteries in the leg. When you hand grip, your muscles are contracted and this compresses the vessels in them. Both these manoeuvres increase total peripheral resistance.

I see that you got 197 on NBME 17. I suggest you postpone the exam.
You strategy should be to understand concepts perfectly so that even if you don't read it ever again you will still remember it.
When it comes to plain facts, find out the reason behind it too. For example, pregnancy is a cause for DIC. Now you can just mug it up or know that amniotic fluid can activate tissue factor and thus cause DIC.
And then there are numbers like ILs, genes and such stuff. The key with these is repetition.
Finally, read for at least 8-10 hours everyday and take at the most 1 day off a week so that you finish studying in the least possible time, else you will forget what you studied long back because you are only human.
Stick to UW, FA and Kaplan/DIT whichever u have been reading.
Thanks a lot. Yeah I did post pone it and I'm going through FA from front to back reading everything. As far as concepts are concerned I'm having a lot of trouble with reproductive section and anything related to thyroid. Especially when i come across those questions with the arrows and asks 'whAt goes up and what goes down'

Also can you suggest any website that may have high yield images? I got most of those kinds of questions wrong, esecpallly when it comes to sections of the brain
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Old 10-08-2015
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Am not sure what images you came across so I can't suggest a good source. I have so far finished Kaplan, pathoma and most of Uworld and FA. Haven't done any NBMEs yet.
As for the images I came across on Uworld, most were pretty straight forward. A few new ones but most were in Kaplan or pathoma.
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