Obesity Flashcards
T/F: Adipose tissue is considered an organ?
True
What is the 2nd leading cause of preventable death?
Obesity
How to calculate BMI?
Weight (Kg) / Height (m2)
or {Weight (lbs)/Height(in2)} x 703
BMI Classes
25-29.9=Overweight 30-34.9=Obese Class 1 35-39.9=Obese Class 2 40-44.9=Obese Class 3 >45= Obese Class 4
Which class is considered Extreme Obesity? Severe Obesity?
Extreme Obesity=Class 3 (BMI 40-44.9)
Severe Obesity=Class 4 (BMI >45).
What is the typical cutoff BMI for Surgery centers?
BMI >45
What is the Broca’s Index?
A formula to calculate Ideal Body Weight
What is the Ideal Body Weight Formula?
Male= Height(cm)- 100 Female= Heigh(cm)- 105
How do you calculate Lead Body Weight?
First calculate IBW and multiply by 1.3
Which adipose distribution is labeled as “Apple Shaped”?
Android
Which adipose distribution is labeled as “Pear Shaped”?
Gynecoid
Which adipose distribution (Gynecoid/Android) is associated with heart disease, DM, HTN, dyslipidemia, death?
Android
How does cardiac output change with obesity?
Increased CO of 0.1L/min for each kg of fat
What are reasons for HTN prevalence in obesity?
- Increased blood viscocity
- Hyperinsulinemia
- Increased mineralocorticoids
- Sodium reabsorption
- Compression of kidneys
- RAA Activation
Do obese patients exhibit restrictive or obstructive respiratory loop patterns?
Restrictive
What is changed on flow volume loops in the obese patient?
Decreased: FRC, ERV, VC, TLC
Increased: Deadspace
No change: RV, CC, FVC, FEV1
What is the definition of OSA?
Excessive episodes of apnea (10 seconds) with >5 episodes per hour or 30 per night
T/F: OSA is very well diagnosed and most patients are treated for it adequately?
False; 80-95% are undiagnosed and/or untreated
What is the “Gold Standard” test for OSA?
Polysomnography (PSG)
What easy scoring parameter can be used to diagnose OSA with 93% sensitivity?
STOP-BANG
What does STOP BANG stand for?
Snoring Tiredness Observed apnea Pressure (HTN) BMI (>35) Age (>50) Neck (>15.75in) Gender (Male)
What is Pickwickian syndrome?
Obese Hypoventilation Syndrome
Typically have OSA induced polycythemia, respiratory acidosis, PulmHTN, R CHF
Why do Pickwickian syndrome patients acquire Right sided heart failure?
Hypoxic Pulmonary Vasoconstriction which leads to Pulmonary HTN
(Cor Pulmonale)
T/F: Maternal obesity is related to pregnancy complications; however, these risks are decreased after bariatric surgery?
False; complication risk increased after bariatric surgery
