Difference between revisions of "Liver"

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(Rewritten heavily based on the Kidney article to not be so stubby. Shouldn't be any remaining references to kidneys, and all the math, descriptions, and logic is updated for kidneys instead.)
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{{Stub|reason=Compare to [[Kidney]]}}{{infobox main|
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{{infobox main|
 
| name = Liver
 
| name = Liver
 
| image = Health item natural.png|Liver
 
| image = Health item natural.png|Liver
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}}
 
}}
  
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'''Liver''' is a [[Table of Human Body Parts|human body part]] that can be removed via surgery, or purchased from a visitor. Livers are essential for [[blood filtration]], and pawns will die without them.
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The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All the blood leaving the stomach and intestines passes through the liver.  The liver accounts for up to 100% of a person's [[blood filtration]] along with the kidneys, and 50% of a person's [[metabolism]]. Destruction of the liver is instantly fatal.
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==Acquisition==
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{{see also|Human Resources}}
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While most [[animals]] have livers, the liver item can only be acquired by harvesting them from [[human]] [[pawns]] through the [[surgery]] bill. This bill requires 1 of any type of medicine to perform. [[Doctoring#Success_chance|Success chance]] is dependent on a number of factors, including bed [[quality]], [[Room stats|room cleanliness]], and doctor skill - specifically the doctor's [[Medical Surgery Success Chance]].
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Removing a liver from a guest or prisoner decreases [[faction]] goodwill by 20 points for organ harvesting, as well as 6 points for murder, down to a max of -100, and creates a -5 [[mood]] to your pawns for 8 days due to "someone's organ harvested", stacking up to 5 times, with a 0.75x multiplier.
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Because removing the liver is invariably fatal, removing it from your own colonist can give tremendous mood penalties.  -5 for "Colonist organ harvested", -6 for "Colonist organ-harvested" which is fatal organ harvesting which stacks with the first, as well as penalties for anybody who participated in or was friends with the colonist.  -3 for "My friend died", -4 for "Observed corpse", -5 for "Witnessed ally's death."  If you intend to harvest a liver from one of your own colonists, be very careful about managing mood afterwards, especially for the doctor who carries it out.
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Pawns with the Bloodlust and Psychopath [[trait]] are not affected by the harvesting of other people. 
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==Analysis==
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While livers can be harvested from prisoners, guests, and your own colonists, generally it is preferable to harvest from prisoners because removing the liver is fatal.  Killing a guest or your own colonist carries a significant mood penalty.
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There are two primary reasons to harvest an organ - trade and transplantation.
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 +
===Transplantation===
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Livers can be damaged by disease, drugs, or combat. Damage to the Liver reduces Blood Filtration (up to 100% when totally destroyed) and Metabolism (up to 50% when totally destroyed). This has several effects - the first is up to a 10% reduction in [[Consciousness]] which in turn affects almost every task a pawn can perform - making them slightly worse in basically every way.
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The second, perhaps more urgent, effect is up to a 50% reduction in [[Immunity Gain Speed]] based on damage to Blood Filtration. This significantly reduces the survivability of infections and common diseases such as the [[Flu]]. If a pawn has an immunity gain speed of 58% or lower, such as from two damaged [[Kidney]]s, or a damaged kidney and liver, then the flu will be invariably fatal.
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Finally, damage to the Metabolism capacity reduces the [[Rest Rate Multiplier]] which makes a pawn sleep for longer periods to become fully rested.
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Total destruction of the liver is instantly fatal.  Thus, it is recommended to replace damaged livers on valuable colonists as soon as possible.
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 +
===Trade===
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Each liver is worth 500 silver, and only has a mass of 2. The abundant supply of [[raiders]] means that, if the mood penalty can be withstood, a significant amount of value can be extracted from them without having to keep prisoners and wait for a Slave Trader or Royal Tribute Collector {{RoyaltyIcon}}.
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Because removing the Liver is fatal, it's actually suboptimal to remove when the other organs are all okay.  The [[Heart]], [[Lung]]s, and [[Kidney]]s are also options for harvesting. If willing to organ-murder the donor, the optimum is removing:
 +
* 1x Lung worth {{icon|silver|{{Q|Lung|Market Value Base}}}}
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* 1x Kidney worth {{icon|silver|{{Q|Kidney|Market Value Base}}}}
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* 1x Heart worth {{icon|silver|{{Q|Heart|Market Value Base}}}}
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For a total of {{icon|silver|{{#expr:{{Q|Heart|Market Value Base}} + {{Q|Kidney|Market Value Base}} + {{Q|Lung|Market Value Base}}}}}}.
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 +
If the Heart is unavailable you can take the Liver instead which has the same value but weighs twice as much. If that is also unavailable, the second lung and then the second kidney are the optimal options.
 +
Removing the heart, liver, second lung or second kidney are all fatal and prevent further harvesting.
 +
 
 +
If unwilling to organ murder the donor, the best option is to harvest
 +
* 1x Lung worth {{icon|silver|{{Q|Lung|Market Value Base}}}}
 +
* 1x Kidney worth {{icon|silver|{{Q|Kidney|Market Value Base}}}}
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For a total of {{icon|silver|{{#expr:{{Q|Kidney|Market Value Base}} + {{Q|Lung|Market Value Base}}}}}}.
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{{nav|body parts|wide}}
 
{{nav|body parts|wide}}
 
[[Category: Medical Item]]
 
[[Category: Medical Item]]
 
[[Category: Body Part]]
 
[[Category: Body Part]]

Revision as of 21:16, 7 July 2021

Liver

Liver

Plays an important role in metabolism.

Base Stats

Type
Medical Items – Body Parts
Market Value
500 Silver
Mass
2 kg
HP
50
Flammability
100%

The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All the blood leaving the stomach and intestines passes through the liver. The liver accounts for up to 100% of a person's blood filtration along with the kidneys, and 50% of a person's metabolism. Destruction of the liver is instantly fatal.

Acquisition

See also: Human Resources

While most animals have livers, the liver item can only be acquired by harvesting them from human pawns through the surgery bill. This bill requires 1 of any type of medicine to perform. Success chance is dependent on a number of factors, including bed quality, room cleanliness, and doctor skill - specifically the doctor's Medical Surgery Success Chance.

Removing a liver from a guest or prisoner decreases faction goodwill by 20 points for organ harvesting, as well as 6 points for murder, down to a max of -100, and creates a -5 mood to your pawns for 8 days due to "someone's organ harvested", stacking up to 5 times, with a 0.75x multiplier.

Because removing the liver is invariably fatal, removing it from your own colonist can give tremendous mood penalties. -5 for "Colonist organ harvested", -6 for "Colonist organ-harvested" which is fatal organ harvesting which stacks with the first, as well as penalties for anybody who participated in or was friends with the colonist. -3 for "My friend died", -4 for "Observed corpse", -5 for "Witnessed ally's death." If you intend to harvest a liver from one of your own colonists, be very careful about managing mood afterwards, especially for the doctor who carries it out.

Pawns with the Bloodlust and Psychopath trait are not affected by the harvesting of other people.

Analysis

While livers can be harvested from prisoners, guests, and your own colonists, generally it is preferable to harvest from prisoners because removing the liver is fatal. Killing a guest or your own colonist carries a significant mood penalty.

There are two primary reasons to harvest an organ - trade and transplantation.

Transplantation

Livers can be damaged by disease, drugs, or combat. Damage to the Liver reduces Blood Filtration (up to 100% when totally destroyed) and Metabolism (up to 50% when totally destroyed). This has several effects - the first is up to a 10% reduction in Consciousness which in turn affects almost every task a pawn can perform - making them slightly worse in basically every way.

The second, perhaps more urgent, effect is up to a 50% reduction in Immunity Gain Speed based on damage to Blood Filtration. This significantly reduces the survivability of infections and common diseases such as the Flu. If a pawn has an immunity gain speed of 58% or lower, such as from two damaged Kidneys, or a damaged kidney and liver, then the flu will be invariably fatal.

Finally, damage to the Metabolism capacity reduces the Rest Rate Multiplier which makes a pawn sleep for longer periods to become fully rested.

Total destruction of the liver is instantly fatal. Thus, it is recommended to replace damaged livers on valuable colonists as soon as possible.

Trade

Each liver is worth 500 silver, and only has a mass of 2. The abundant supply of raiders means that, if the mood penalty can be withstood, a significant amount of value can be extracted from them without having to keep prisoners and wait for a Slave Trader or Royal Tribute Collector Content added by the Royalty DLC.

Because removing the Liver is fatal, it's actually suboptimal to remove when the other organs are all okay. The Heart, Lungs, and Kidneys are also options for harvesting. If willing to organ-murder the donor, the optimum is removing:

  • 1x Lung worth Silver 1,000
  • 1x Kidney worth Silver 900
  • 1x Heart worth Silver 1,200

For a total of Silver Expression error: Unrecognized punctuation character ","..

If the Heart is unavailable you can take the Liver instead which has the same value but weighs twice as much. If that is also unavailable, the second lung and then the second kidney are the optimal options. Removing the heart, liver, second lung or second kidney are all fatal and prevent further harvesting.

If unwilling to organ murder the donor, the best option is to harvest

  • 1x Lung worth Silver 1,000
  • 1x Kidney worth Silver 900

For a total of Silver Expression error: Unrecognized punctuation character ","..

Artificial body parts
Arm/Hand
Archotech arm • Bionic arm • Power claw • Prosthetic arm • Wooden hand • Drill arm Content added by the Royalty DLC • Elbow blade Content added by the Royalty DLC • Field hand Content added by the Royalty DLC • Hand talon Content added by the Royalty DLC • Venom talon Content added by the Royalty DLC • Flesh tentacleContent added by the Anomaly DLC • Flesh whipContent added by the Anomaly DLC
Head
Archotech eye • Bionic eye • Bionic ear • Bionic jaw • Bionic tongue • Cochlear implant • Denture • Aesthetic nose Content added by the Royalty DLC
Head implants
Joywire • Painstopper • Circadian assistant Content added by the Royalty DLC • Circadian half-cycler Content added by the Royalty DLC • Gastro-analyzer Content added by the Royalty DLC • Learning assistant Content added by the Royalty DLC • Mindscrew Content added by the Royalty DLC • Neurocalculator Content added by the Royalty DLC • Psychic harmonizer Content added by the Royalty DLC • Psychic reader Content added by the Royalty DLC • Psychic sensitizer Content added by the Royalty DLC • Venom fangs Content added by the Royalty DLC • Control sublink (Standard, High) Content added by the Biotech DLC • Mechlink Content added by the Biotech DLC • Mech gestation processor Content added by the Biotech DLC • Remote repairer Content added by the Biotech DLC • Remote shielder Content added by the Biotech DLC • Repair probe Content added by the Biotech DLC
Spine
Bionic spine • Revenant vertebraeContent added by the Anomaly DLC
Stomach
Bionic stomach • Nuclear stomach Content added by the Royalty DLC • Reprocessor stomach Content added by the Royalty DLC • Sterilizing stomach Content added by the Royalty DLC • Fleshmass stomach Content added by the Anomaly DLC
Heart
Bionic heart • Prosthetic heart • Heart • Adrenal heartContent added by the Anomaly DLC • Corrosive heartContent added by the Anomaly DLC • Metalblood heartContent added by the Anomaly DLC
Lung
Lung • Detoxifier lung Content added by the Biotech DLC • Fleshmass lung Content added by the Anomaly DLC
Kidney
Kidney • Detoxifier kidney Content added by the Biotech DLC
Organs
Liver
Visceral implants
Death acidifier • Aesthetic shaper Content added by the Royalty DLC • Coagulator Content added by the Royalty DLC • Healing enhancer Content added by the Royalty DLC • Armorskin gland Content added by the Royalty DLC • Stoneskin gland Content added by the Royalty DLC • Toughskin gland Content added by the Royalty DLC • Immunoenhancer Content added by the Royalty DLC • Love enhancer Content added by the Royalty DLC • Ghoul platingContent added by the Anomaly DLC • Ghoul barbsContent added by the Anomaly DLC
Leg/Foot
Archotech leg • Bionic leg • Prosthetic leg • Peg leg • Wooden foot • Knee spike Content added by the Royalty DLC
Related
Psylink neuroformer Content added by the Royalty DLC • Xenogerm Content added by the Biotech DLC
Deprecated
Scyther blade • Psychic silencer Content added by the Royalty DLC

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