Obesity Flashcards
What is the BMI scale for an underweight person
Less than 18.5 and at the risk is increased for a cvd
What’s the BMI the normal person
1825 to 24.9
Overweight BMI scale?
25 to 29.9 there’s also an increased risk
What’s the BMI scale for obese one
30 to 34.9
Obese 2 BMW?
35-39.9
Obese 3 BMI?
Greater than 40
What are the limitations to BMI?
Not gender specific not age specific it doesn’t account for body fat distribution does an account for pregnant women and it does not account for lean mass versus fat mass
What are some other ways to measure body fat
DEXA, MRI, skinfold, hydrostatic waiting, I will electric impedance
What is BMI considered a risk factor for?
Heard failure and left ventricular remodelling
An increase in one on the BMI scale for males has what kind of risk factor for heart failure
5%
An increase in one on the BMI scale for females has what kind of risk factor for heart failure
7%
Obesity is often considered a produces date of what
Chronic volume overload which is caused by an increase 02 consumption as a result of expanded lean in adipose tissue
What is concentric hyper trophy
It’s one of my accordion increases in size but the chambers get smaller. There is a smaller stroke volume and larger ventricular after load
What is eccentric hypertrophy
The myocardium growing lengthwise which increases the overall size and volume of the left ventricle
Obese ppl have heightened what
Sympathetic nerve activity , leptin resistance and higher insulin. Also activation of renin angiotensin aldosterone system
What is leptin and how does it work.
It acts on hypothalamus to decrease appetite and increase energy expenditure through SNS stimulation while stimulating NO to counteract the effects of SNS on BP. leptin resistance means they have sympathetic hyperactivity and less no and hypertension occurs.
Where’s aldosterone secreted
Adrenal cortex
Hyperlipidaemia does what for blood pressure
It has the depressor affects not enabled for blood pressure so there’s also decreased him and I’ll production and the dealio disfunction there is an increase in assess oxidative stress sodium reabsorption
What does insulin been shown to do?
It increases sympathetic nervous system and it also increases sodium reabsorption. however there is no direct link between increased insulin in the blood and increased blood pressure
