A patient with a PCO2 of 120 enters the chat, then dies promptly
August 14, 2025 at 11:43 AM
A patient with a PCO2 of 120 enters the chat, then dies promptly
Interesting study reconstructing ancient atmospheric pCO2 from the triple oxygen isotopic (16O, 17O, 18O) composition of the dinosaur enamel:
"...suggest a mean Late Jurassic pCO2 = 1,200 ± 150 ppmv and Late Cretaceous pCO2 = 750 ± 200 ppmv."
doi.org/10.1073/pnas...
🧪 ⚒️ #Paleobio #EvoBio #Geology
"...suggest a mean Late Jurassic pCO2 = 1,200 ± 150 ppmv and Late Cretaceous pCO2 = 750 ± 200 ppmv."
doi.org/10.1073/pnas...
🧪 ⚒️ #Paleobio #EvoBio #Geology
August 12, 2025 at 11:50 AM
Interesting study reconstructing ancient atmospheric pCO2 from the triple oxygen isotopic (16O, 17O, 18O) composition of the dinosaur enamel:
"...suggest a mean Late Jurassic pCO2 = 1,200 ± 150 ppmv and Late Cretaceous pCO2 = 750 ± 200 ppmv."
doi.org/10.1073/pnas...
🧪 ⚒️ #Paleobio #EvoBio #Geology
"...suggest a mean Late Jurassic pCO2 = 1,200 ± 150 ppmv and Late Cretaceous pCO2 = 750 ± 200 ppmv."
doi.org/10.1073/pnas...
🧪 ⚒️ #Paleobio #EvoBio #Geology
ABG can largely be replaced by VBG
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/zGfQ7...
#EMIMCC #MedSky
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/zGfQ7...
#EMIMCC #MedSky
VBG vs ABG pH, PCO2, HCO3 #criticalcare #emergencymedicine #resuscitation
YouTube video by EMSwami
youtube.com
April 28, 2025 at 1:41 PM
ABG can largely be replaced by VBG
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/zGfQ7...
#EMIMCC #MedSky
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/zGfQ7...
#EMIMCC #MedSky
Must read paper on pCO₂ measurements, especially for MRV of mCDR. Some key points:
Equilibrator-based instruments require more expertise but give much better results.
For membrane/in situ instruments, you could get significantly different results from instruments from the same manufacturer. 🙀🌊
Equilibrator-based instruments require more expertise but give much better results.
For membrane/in situ instruments, you could get significantly different results from instruments from the same manufacturer. 🙀🌊
The ICOS OTC pCO2 instrument intercomparison
In 2021, the Ocean Thematic Centre of the European Research Infrastructure “Integrated Carbon Observation System” conducted an international partial pressure of carbon dioxide (pCO2) instrument inter...
aslopubs.onlinelibrary.wiley.com
September 1, 2025 at 9:30 AM
Must read paper on pCO₂ measurements, especially for MRV of mCDR. Some key points:
Equilibrator-based instruments require more expertise but give much better results.
For membrane/in situ instruments, you could get significantly different results from instruments from the same manufacturer. 🙀🌊
Equilibrator-based instruments require more expertise but give much better results.
For membrane/in situ instruments, you could get significantly different results from instruments from the same manufacturer. 🙀🌊
Here's some of the math with references. Even for someone with fixed ventilation, PCO2 returns to normal pretty rapidly.
January 3, 2025 at 12:24 AM
Here's some of the math with references. Even for someone with fixed ventilation, PCO2 returns to normal pretty rapidly.
Alt text:
A venous blood gas
pH 6.93
pCO2 30
Bicarb 6
A venous blood gas
pH 6.93
pCO2 30
Bicarb 6
November 24, 2024 at 8:21 PM
Alt text:
A venous blood gas
pH 6.93
pCO2 30
Bicarb 6
A venous blood gas
pH 6.93
pCO2 30
Bicarb 6
Hui, Respekt. Pat kam zu Fuß mit 2l O2/min zur Tür rein…von Zeit zu Zeit lohnt sich ja vll doch mal ein Besuch beim Lungenfacharzt 😂🙈
March 24, 2026 at 1:56 PM
Hui, Respekt. Pat kam zu Fuß mit 2l O2/min zur Tür rein…von Zeit zu Zeit lohnt sich ja vll doch mal ein Besuch beim Lungenfacharzt 😂🙈
...Wir messen bei ihr eine Sauerstoffsättigung von 71% und in der anschließenden Blutgasanalyse einen pO2 von 31mmHg und einen pCO2 von 50mmHg. Mir ist völlig schleierhaft, wie sie unter diesen Umständen das alles so hinbekommt! Aber sie ist eindeutig fest entschlossen, alles zu tun, um so ...
September 23, 2026 at 7:17 PM
...Wir messen bei ihr eine Sauerstoffsättigung von 71% und in der anschließenden Blutgasanalyse einen pO2 von 31mmHg und einen pCO2 von 50mmHg. Mir ist völlig schleierhaft, wie sie unter diesen Umständen das alles so hinbekommt! Aber sie ist eindeutig fest entschlossen, alles zu tun, um so ...
Got curbsided for a possible RTA
Low bicarb ✅
Normal anion gap ✅
Hypokalemia ✅
History of stones ✅
ABG showing acidosis ❌
They got the ABG: pH 7.46 pCO2 23
Dx: RTA* type 5
*Respiratory Tract Alkalosis
Low bicarb ✅
Normal anion gap ✅
Hypokalemia ✅
History of stones ✅
ABG showing acidosis ❌
They got the ABG: pH 7.46 pCO2 23
Dx: RTA* type 5
*Respiratory Tract Alkalosis
January 15, 2025 at 2:45 PM
Got curbsided for a possible RTA
Low bicarb ✅
Normal anion gap ✅
Hypokalemia ✅
History of stones ✅
ABG showing acidosis ❌
They got the ABG: pH 7.46 pCO2 23
Dx: RTA* type 5
*Respiratory Tract Alkalosis
Low bicarb ✅
Normal anion gap ✅
Hypokalemia ✅
History of stones ✅
ABG showing acidosis ❌
They got the ABG: pH 7.46 pCO2 23
Dx: RTA* type 5
*Respiratory Tract Alkalosis
2 Stunden später. Patient wird instabil. 15 l O2, pH 7,2, pCO2 80 mmHg. Linke Lunge komplett verschattet. Anästhesie will den Pat. nicht zurück übernehmen. Das ist keine NFR, das ist Psychoterror.
November 22, 2025 at 8:11 AM
2 Stunden später. Patient wird instabil. 15 l O2, pH 7,2, pCO2 80 mmHg. Linke Lunge komplett verschattet. Anästhesie will den Pat. nicht zurück übernehmen. Das ist keine NFR, das ist Psychoterror.
Fresh blog: validation of my model for converting VBGs to ABGs 🥳
💉 simple equation improved precision, compared to estimating arterial pCO2 as 5 mm below venous pCO2
💉 venous O2% adds nuance to interpreting VBG results (key metric of VBG accuracy)
link: emcrit.org/jorg #MedSky #FOAMed
💉 simple equation improved precision, compared to estimating arterial pCO2 as 5 mm below venous pCO2
💉 venous O2% adds nuance to interpreting VBG results (key metric of VBG accuracy)
link: emcrit.org/jorg #MedSky #FOAMed
January 1, 2024 at 2:32 PM
Fresh blog: validation of my model for converting VBGs to ABGs 🥳
💉 simple equation improved precision, compared to estimating arterial pCO2 as 5 mm below venous pCO2
💉 venous O2% adds nuance to interpreting VBG results (key metric of VBG accuracy)
link: emcrit.org/jorg #MedSky #FOAMed
💉 simple equation improved precision, compared to estimating arterial pCO2 as 5 mm below venous pCO2
💉 venous O2% adds nuance to interpreting VBG results (key metric of VBG accuracy)
link: emcrit.org/jorg #MedSky #FOAMed
As someone working on things related to climate change, and specifically the carbon cycle, I need to look up the daily pCO2 value from time to time.
And right about every time my reaction is "Holy shit 😱, it's how much now?"
And right about every time my reaction is "Holy shit 😱, it's how much now?"
🚨 Carbon dioxide averaged 432.34 ppm in May 2026. This marks a new record high for the month of May and the annual seasonal peak.
10 years ago May averaged about 408 ppm.
This continued rise is driven by human emissions from fossil fuels, with climate change impacts intensifying around the world.
10 years ago May averaged about 408 ppm.
This continued rise is driven by human emissions from fossil fuels, with climate change impacts intensifying around the world.
June 6, 2026 at 6:39 PM
As someone working on things related to climate change, and specifically the carbon cycle, I need to look up the daily pCO2 value from time to time.
And right about every time my reaction is "Holy shit 😱, it's how much now?"
And right about every time my reaction is "Holy shit 😱, it's how much now?"
The late Miocene possibly had lower athmospheric pCO2 than we have right now (but higher than pre-industrial), but that was enough for there not to be permafrost in North Greenland.
Once a local threshold is reached, that is enough sometimes. 🧪
Link: www.nature.com/articles/s41...
Once a local threshold is reached, that is enough sometimes. 🧪
Link: www.nature.com/articles/s41...
December 2, 2025 at 3:43 PM
The late Miocene possibly had lower athmospheric pCO2 than we have right now (but higher than pre-industrial), but that was enough for there not to be permafrost in North Greenland.
Once a local threshold is reached, that is enough sometimes. 🧪
Link: www.nature.com/articles/s41...
Once a local threshold is reached, that is enough sometimes. 🧪
Link: www.nature.com/articles/s41...
Taunt Demonstration: Party Trick
www.youtube.com/watch?v=PcO2...
wiki.teamfortress.com/wiki/Party_T... #TF2
www.youtube.com/watch?v=PcO2...
wiki.teamfortress.com/wiki/Party_T... #TF2
Taunt Demonstration: Party Trick
YouTube video by OfficialTF2Wiki
www.youtube.com
February 27, 2026 at 12:05 AM
Taunt Demonstration: Party Trick
www.youtube.com/watch?v=PcO2...
wiki.teamfortress.com/wiki/Party_T... #TF2
www.youtube.com/watch?v=PcO2...
wiki.teamfortress.com/wiki/Party_T... #TF2
…klappt es. Wir übergeben die Patientin im Schockraum mit einer Sättigung von 91% und einem pCO2 in der direkt erfolgten BGA von 81mmHg und einem pH von 7,18.
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
December 19, 2025 at 11:50 AM
…klappt es. Wir übergeben die Patientin im Schockraum mit einer Sättigung von 91% und einem pCO2 in der direkt erfolgten BGA von 81mmHg und einem pH von 7,18.
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
Ich sage allen Leuten immer „Das Beatmungsgerät hat keine Dyspnoe, das kommt zum Patienten, nicht der Patient zum Beatmungsgerät!“
The results of a great collaboration finally out. Symbiotic carbon recycling in coral larvae is enhanced by elevated pCO2 and moderate increases in temperature. 🪸🧫 #Symbiosky
Symbiodiniaceae algal symbionts of Pocillopora damicornis larvae provide more carbon to their coral host under elevated levels of acidification and temperature
Symbiodiniaceae algal symbionts of Pocillopora damicornis larvae provide more carbon to their coral host under elevated levels of acidification and temperature - Communications Biology
Acidification and warming enhance the productivity and nutrient assimilation of Pocillopora damicornis coral larvae, without destabilizing its symbiosis with intracellular algae.
www.nature.com
November 20, 2024 at 8:01 AM
The results of a great collaboration finally out. Symbiotic carbon recycling in coral larvae is enhanced by elevated pCO2 and moderate increases in temperature. 🪸🧫 #Symbiosky
wer gibt denn pCO2 in kPa an, ist das hier üblich? Bic von 45 ist aber ne Leistung!
March 24, 2026 at 4:01 PM
wer gibt denn pCO2 in kPa an, ist das hier üblich? Bic von 45 ist aber ne Leistung!
"These results highlight the key role of outgassing and deep Earth processes in influencing pCO2 variation and climate dynamics with implications for understanding historical climate variations"
www.sciencedirect.com/science/arti...
🧪 ⚒️ #Geology #Paleobio #Climate
www.sciencedirect.com/science/arti...
🧪 ⚒️ #Geology #Paleobio #Climate
April 10, 2026 at 1:05 PM
"These results highlight the key role of outgassing and deep Earth processes in influencing pCO2 variation and climate dynamics with implications for understanding historical climate variations"
www.sciencedirect.com/science/arti...
🧪 ⚒️ #Geology #Paleobio #Climate
www.sciencedirect.com/science/arti...
🧪 ⚒️ #Geology #Paleobio #Climate
Pleased to post our paper published in the October issue in JASN on metabolic acidosis in CKD using estimated arterial pH, pCO2, and bicarbonate from venous blood (doi: 10.34067/KID.0000001113).
@nu-nephrology.bsky.social @feinberg.northwestern.edu
www.ovid.com/jnls/jasn/fu...
@nu-nephrology.bsky.social @feinberg.northwestern.edu
www.ovid.com/jnls/jasn/fu...
October 1, 2026 at 9:27 PM
Pleased to post our paper published in the October issue in JASN on metabolic acidosis in CKD using estimated arterial pH, pCO2, and bicarbonate from venous blood (doi: 10.34067/KID.0000001113).
@nu-nephrology.bsky.social @feinberg.northwestern.edu
www.ovid.com/jnls/jasn/fu...
@nu-nephrology.bsky.social @feinberg.northwestern.edu
www.ovid.com/jnls/jasn/fu...
Oligocene atmospheric CO2 drawdown linked to increased land surface weatherability www.sciencedirect.com/science/arti...
Oligocene atmospheric CO2 drawdown linked to increased land surface weatherability
The Oligocene features a long-term decrease in atmospheric CO2 levels (pCO2). However, the driving force of the Oligocene pCO2 drawdown remains uncert…
www.sciencedirect.com
May 30, 2025 at 4:29 PM
Oligocene atmospheric CO2 drawdown linked to increased land surface weatherability www.sciencedirect.com/science/arti...
Ground-truthing pCO2 in the Mesozoic is cool and all, but for maximum impact, how about doing that with dinosaur teeth?
🧪⚒️
Link: www.pnas.org/doi/10.1073/...
🧪⚒️
Link: www.pnas.org/doi/10.1073/...
August 5, 2025 at 1:32 PM
Ground-truthing pCO2 in the Mesozoic is cool and all, but for maximum impact, how about doing that with dinosaur teeth?
🧪⚒️
Link: www.pnas.org/doi/10.1073/...
🧪⚒️
Link: www.pnas.org/doi/10.1073/...
ABG can largely be replaced by VBG
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/OMFEo...
#EMIMCC
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/OMFEo...
#EMIMCC
VBG vs ABG pH, PCO2, HCO3 #emergencymedicine #criticalcare
YouTube video by EMSwami
youtube.com
July 1, 2026 at 1:52 PM
ABG can largely be replaced by VBG
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/OMFEo...
#EMIMCC
pH: VBG ~ 0.03 units lower than ABG
PCO2: VBG 6-10 mm Hg higher than ABG
HCO3: VBG 1-2 mmol lower than ABG
Under most circumstances, these differences won’t affect management making ABG unnecessary
youtube.com/shorts/OMFEo...
#EMIMCC
"Und wie läufts?" Ein Symbolbild.
Arteriell und akkurat ☀️
Arteriell und akkurat ☀️
May 25, 2026 at 1:29 PM
"Und wie läufts?" Ein Symbolbild.
Arteriell und akkurat ☀️
Arteriell und akkurat ☀️
"Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene"; www.nature.com/articles/s41...
Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene - Nature Communications
Molecular fossils from marine phytoplankton reveal a substantial decline in CO2 values over the past 15 million years and may support higher climate sensitivity than previously reported.
www.nature.com
February 2, 2026 at 5:11 PM
"Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene"; www.nature.com/articles/s41...