Difference between revisions of "Prosthetic heart"

Revision as of 22:59, 15 October 2022

The Prosthetic heart is a heart replacement with 80% efficiency. It affects Blood pumping and several dependent stats - due to its below-normal part efficiency it negatively affects healthy pawns but may benefit injured or unhealthy ones.

Acquisition

Prosthetic hearts can be crafted at a Machining table once the Prosthetics research project has been completed. They require 25 Steel, 4 Components, 15,000 ticks (4.17 mins) of work, and a Crafting skill of 5.

Summary

Prosthetic hearts have an 80% part efficiency, or a -20% reduction compared to a healthy organic heart. Installing it thus results in a 20% loss to Blood Pumping, which results in a Move Speed reduction of 7.5% (equal to a prosethetic leg) and a 4% reduction in Consciousness, Manipulation, Talking, and Eating. Additionally, they require 6% more rest due to the 94% Rest Rate Multiplier. Finally, this also results in a 20.3% reduction in an otherwise healthy pawn's market value.

However, installing a prosthetic heart will instantly cure any artery blockages, and prevent heart attacks from any source, including drugs. Installing a prosthetic heart in a patient with a healthy natural heart will result in the heart being harvested for later use. Normal organ harvesting penalties apply when harvesting a heart in this way.^{[Fact Check]}

Installation

Installing the part requires 2,500 ticks (41.67 secs) of work, ?x medicine of ?? quality or better, and a Medical skill of 4.

Removing the part requires ? of work, ?x medicine of ?? quality or better, and a Medical skill of ?.

If the operation fails, the part has a chance^{[What Chance?]} to be destroyed. If the installation surgery fails, there is also a 25% chance that the patient dies. Thus, as the maximum success chance of any surgery is capped at 98%, there is always at least a 0.5% chance of death per attempt.

Analysis

Prosthetic hearts can be important tools to prevent heart attack deaths in the early game, should an otherwise valuable colonist be prone to them. Its small but significant stat penalties mean that, ideally, natural hearts or bionic hearts should be used instead. Bionic hearts in particular have the same disease immunities, but improve rather than lower stats.

An artifical heart could be used to make the use of wake-up safer in the long term, which could otherwise cause heart attacks. However, wake-up isn't free to make, and you'll lose productivity outside of drug use. This option should be weighed against a circadian half-cycler, which is a one time cost with a a flat -15% Consciousness penalty.

On the plus side, prosthetic hearts provide a fairly cheap method of harvesting an ordinary heart. This way, you can get an organic heart without killing a prisoner, or obtain both a heart and a liver; just remember to harvest the liver last, as organs can't be retrieved from a corpse. Doing this on an allied/neutral faction will cause a -20 penalty to goodwill with the faction, for an "unnecessary surgery", if diplomacy is a concern to your colony.

While it does provide a buff to pawns with the Body modder trait, its negative effects on healthy pawns means it should be passed over for other, less detrimental prostheses.

Version history

0.19.2009 - Added.

Artificial body parts

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

@@ Line 28: / Line 28: @@
 == Summary ==
-Prosthetic hearts have an 80% part efficiency, while heart body part has a 100% importance to the [[Blood Pumping]] capacity. Thus, installing it results in a 20% loss to Blood Pumping. Installing a prosthetic heart will also instantly cure any [[artery blockage]]s and prevent [[heart attack]]s from any source, including [[drugs]]. However the decrease in blood pumping has a number of carry-on effects including a [[Move Speed]] reduction of 7.5%, equivalent to a [[prosthetic leg]], and a 4% reduction in [[Consciousness]], [[Manipulation]], [[Talking]], and [[Eating]]. Additionally, they require 6% more [[rest]] due to the 94% [[Rest Rate Multiplier]]. The reduction in consciousness and manipulation mean than that almost all tasks will be completed slightly slower. Finally, this also results in a 20.3% reduction in an otherwise healthy pawn's market value.
+Prosthetic hearts have an 80% part efficiency, or a -20% reduction compared to a healthy organic heart. Installing it thus results in a 20% loss to [[Blood Pumping]], which results in a [[Move Speed]] reduction of 7.5% (equal to a [[prosethetic leg]]) and a 4% reduction in [[Consciousness]], [[Manipulation]], [[Talking]], and [[Eating]]. Additionally, they require 6% more [[rest]] due to the 94% [[Rest Rate Multiplier]]. Finally, this also results in a 20.3% reduction in an otherwise healthy pawn's market value.
-Installing a prosthetic heart in a patient with a healthy natural [[heart]] will result in the heart being harvested for later use. Normal organ harvesting penalties apply when harvesting a heart in this way.{{Check Tag|Fact Check|Fact check needed, if confirmed just delete this tag.}}
+However, installing a prosthetic heart will instantly cure any [[artery blockage]]s, and prevent [[heart attack]]s from any source, including [[drugs]]. Installing a prosthetic heart in a patient with a healthy natural [[heart]] will result in the heart being harvested for later use. Normal organ harvesting penalties apply when harvesting a heart in this way.{{Check Tag|Fact Check|Fact check needed, if confirmed just delete this tag.}}
 === Installation ===
@@ Line 42: / Line 42: @@
 == Analysis ==
 {{stub|section=1|reason=Math for the net profit ''after TPI'' of selling the extra heart you get vs selling the prosthetic and vs having to buy the components}}
-Prosthetic hearts can be important tools to prevent heart attack deaths in the early game, should an otherwise valuable colonist be prone to them. However their stat penalties are significant. Ideally, natural [[heart]]s or [[bionic heart]]s should be used instead. Bionic hearts especially, as they give a small but significant buff to [[Moving]] and [[Rest Rate Multiplier]].
+Prosthetic hearts can be important tools to prevent heart attack deaths in the early game, should an otherwise valuable colonist be prone to them. Its small but significant stat penalties mean that, ideally, natural [[heart]]s or [[bionic heart]]s should be used instead. Bionic hearts in particular have the same disease immunities, but improve rather than lower stats.
-On the plus side, prosthetic hearts provide a fairly cheap method of harvesting one of all harvestable body parts. Just remember to harvest the Liver last and that you cannot reclaim the heart from a lifeless corpse. Indeed, using the prosthetic heart to retrieve a natural heart from a prisoner without causing a mood debuff for the prisoners death may be a more viable way to deal with a colonist needing a new heart. However, this procedure ''will'' cause a -20 penalty to [[goodwill]] with the faction, for an "unnecessary surgery", if diplomacy is a concern to your colony.
+An artifical heart could be used to make the use of [[wake-up]] safer in the long term, which could otherwise cause heart attacks. However, wake-up isn't free to make, and you'll lose productivity outside of drug use. This option should be weighed against a [[circadian half-cycler]]{{RoyaltyIcon}}, which is a one time cost with a a flat -15% [[Consciousness]] penalty.
-It can also be used to make the use of [[wake-up]] safer in the long term by preventing the heart attacks the drug can cause. That said, the cost of the wake-up and the lost productivity from the prosthetic should be weighed against the simply installing a [[circadian half-cycler]]{{RoyaltyIcon}} for a one time cost a and a flat -15% [[Consciousness]] penalty, as should the cost of other methods of [[sleep]] need reduction. Ideally, a bionic heart, which affords the same protection but also improves stats, should be used in this role if it can be obtained.
+On the plus side, prosthetic hearts provide a fairly cheap method of harvesting an ordinary heart. This way, you can get an organic heart without killing a prisoner, or obtain both a heart and a [[liver]]; just remember to harvest the liver last, as organs can't be retrieved from a corpse. Doing this on an allied/neutral faction ''will'' cause a -20 penalty to [[goodwill]] with the faction, for an "unnecessary surgery", if diplomacy is a concern to your colony.
 While it does provide a buff to pawns with the [[Body modder]] [[trait]], its negative effects on healthy pawns means it should be passed over for other, less detrimental prostheses.