Hepatobillary Flashcards
(150 cards)
What are the functions of the liver?
- Synthesizes: glucose via gluconeogenesis and stores excess glucose as glycogen
- Synthesizes: cholesterol & proteins into hormones and vitamins
- Synthesizes: coagulation factors (all except factors III, IV, VIII, vWF)
- Metabolizes: fats, proteins, carbs to generate energy
- Metabolizes: drugs via CYP-540 and other enzyme pathways
- Blood: Detoxifies
- Blood: Processes Hgb and stores iron
- Blood: Aids in volume control as a blood reservoir
- Involved in the acute-phase of immune support
slide 2
Nearly every organ is impacted by ____.
liver function- Liver dysfunction can lead to multi-organ failure
slide 2
how many segments are in the liver?
8 segments
Based on blood supply & bile drainage
slide 3
what are the R&L lobes separated by?
falciform ligament
slide 3
____ vein and ____ artery branch into each segment
- portal vein
- hepatic artery
slide 3
what 3 veins empty into IVC?
Right, Middle, Left hepatic veins
slide 3
- Bile ducts travel along ____.
- Bile drains through the ____ into Gallbladder & Common Bile Duct
- Bile enters duodenum via ____.
- portal veins
- hepatic duct
- Ampulla of Vater
slide 3
Liver recieves ____% of COP. which is about ____ L/min.
- Receives 25% of COP
- 1.25-1.5 liters per min
highest proportionate COP of all organs
slide 4
portal vein arises from ____ vein and ____ ____ vein
- splenic vein
- superior mesenteric vein
slide 4
portal vein blood is deoxygenated from ?
- GI organs
- pancrease
- spleen
slide 4
portal vein provides ____% of HBF
75%
slide 4
Which artery branches off the aorta?
hepatic artery
hepatic artery provides ____% of HBF
25%
slide 4
how does the liver get O2?
- 50% viaPortal vein (deoxygenated)
- 50% via Hepatic artery
slide 4
hepatic arterial blood flow is inversely related to
portal venous blood flow
slide 5
how is hepatic blood flow autoregulated?
Hepatic art. dilates in response to low portal venous flow, keeping consistent HBF
slide 5
Portal venous pressure reflects ____ tone and ____ pressure
splanchnic arterial tone and intrahepatic pressure
slide 5
increased portal venous pressure causes
blood backsupinto to systemic circulation resulting in esophageal and gastric varices
slide 5
hepatic venous pressure gradient is used to determine severity of?
portal hypertension
slide 6
what is a normal Hepatic venous pressure gradient (HVPG)?
1-5 mmhg
slide 6
this HVPG is clinically significant portal hypertension(cirrhosis, esophageal varicies)
> 10
slide 6
this HVPG can see vriceal rupture
> 12
slide 6
pts are often ____ until late-stage liver disease
asymptomatic
slide 8
in later stages pts may only have??
vague s/s like disrupted sleep, and decreased appetite
slide 8