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CCBs and Oxygenation: Why the Sat Falls After the Drip

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Manage episode 518250503 series 2774944
Content provided by Eddy Joe Gutierrez, MD, Eddy Joe Gutierrez, and MD. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Eddy Joe Gutierrez, MD, Eddy Joe Gutierrez, and MD or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.

Intravenous dihydropyridine calcium channel blockers can quietly worsen oxygenation by blunting hypoxic pulmonary vasoconstriction. In this episode, we break down the bedside mechanism, which agents are implicated, who’s at highest risk (post-op atelectasis, obesity, pneumonia, focal ARDS, COPD), how soon it happens, and exactly what to do.

The Vasopressor & Inotrope Handbook

Amazon: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://amzn.to/47qJZe1⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ (Affiliate Link)

My Store: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://eddyjoemd.myshopify.com/products/the-vasopressor-inotrope-handbook⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ (Use "podcast" to save 10%)

Citations:

Weir EK, López-Barneo J, Buckler KJ, Archer SL. Acute oxygen-sensing mechanisms. N Engl J Med. 2005 Nov 10;353(19):2042-55. doi: 10.1056/NEJMra050002. PMID: 16282179; PMCID: PMC2803102.

Weir EK, Olschewski A. Role of ion channels in acute and chronic responses of the pulmonary vasculature to hypoxia. Cardiovasc Res. 2006 Sep 1;71(4):630-41. doi: 10.1016/j.cardiores.2006.04.014. Epub 2006 Apr 27. PMID: 16828723.

Lumb AB, Slinger P. Hypoxic pulmonary vasoconstriction: physiology and anesthetic implications. Anesthesiology. 2015 Apr;122(4):932-46. doi: 10.1097/ALN.0000000000000569. PMID: 25587641.

Timour G, Fréderic V, Olivier S, Shango DN. Nicardipine-induced acute respiratory failure: Case report and literature review. Clin Case Rep. 2023 May 1;11(5):e7186. doi: 10.1002/ccr3.7186. PMID: 37143457; PMCID: PMC10151601.

McMurtry IF, Davidson AB, Reeves JT, Grover RF. Inhibition of hypoxic pulmonary vasoconstriction by calcium antagonists in isolated rat lungs. Circ Res. 1976 Feb;38(2):99-104. doi: 10.1161/01.RES.38.2.99. PMID: 1245025.

Simonneau G, Escourrou P, Duroux P, Lockhart A. Inhibition of hypoxic pulmonary vasoconstriction by nifedipine. N Engl J Med. 1981 Jun 25;304(26):1582-5. doi: 10.1056/NEJM198106253042606. PMID: 7231503.

Kennedy T, Summer W. Inhibition of hypoxic pulmonary vasoconstriction by nifedipine. Am J Cardiol. 1982 Oct;50(4):864-8. doi: 10.1016/0002-9149(82)91246-2. PMID: 7124646.

Chrétien B, Decros JB, Suard F, Dolladille C, Fischer MO, Alexandre J, Descamps R. Hypoxia Associated With Dihydropyridine Calcium Channel Inhibitors: A Pharmacovigilance Study in VigiBase. Clin Pharmacol Ther. 2023 Sep;114(3):686-692. doi: 10.1002/cpt.2970. Epub 2023 Jun 29. PMID: 37309986.

Burghuber OC. Nifedipine attenuates acute hypoxic pulmonary vasoconstriction in patients with chronic obstructive pulmonary disease. Respiration. 1987;52(2):86-93. doi: 10.1159/000195309. PMID: 3671896.

Suard F, Mombrun M, Fischer MO, Hanouz JL, Decros JB, Derville S, Gakuba C, Al Issa G, Menard C, Chretien B, Descamps R. Oxygenation Effects of Antihypertensive Agents in Intensive Care: A Prospective Comparative Study of Nicardipine and Urapidil. Clin Pharmacol Ther. 2025 Mar;117(3):742-748. doi: 10.1002/cpt.3509. Epub 2024 Nov 27. PMID: 39604146.

  continue reading

160 episodes

Artwork
iconShare
 
Manage episode 518250503 series 2774944
Content provided by Eddy Joe Gutierrez, MD, Eddy Joe Gutierrez, and MD. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Eddy Joe Gutierrez, MD, Eddy Joe Gutierrez, and MD or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://player.fm/legal.

Intravenous dihydropyridine calcium channel blockers can quietly worsen oxygenation by blunting hypoxic pulmonary vasoconstriction. In this episode, we break down the bedside mechanism, which agents are implicated, who’s at highest risk (post-op atelectasis, obesity, pneumonia, focal ARDS, COPD), how soon it happens, and exactly what to do.

The Vasopressor & Inotrope Handbook

Amazon: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://amzn.to/47qJZe1⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ (Affiliate Link)

My Store: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://eddyjoemd.myshopify.com/products/the-vasopressor-inotrope-handbook⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ (Use "podcast" to save 10%)

Citations:

Weir EK, López-Barneo J, Buckler KJ, Archer SL. Acute oxygen-sensing mechanisms. N Engl J Med. 2005 Nov 10;353(19):2042-55. doi: 10.1056/NEJMra050002. PMID: 16282179; PMCID: PMC2803102.

Weir EK, Olschewski A. Role of ion channels in acute and chronic responses of the pulmonary vasculature to hypoxia. Cardiovasc Res. 2006 Sep 1;71(4):630-41. doi: 10.1016/j.cardiores.2006.04.014. Epub 2006 Apr 27. PMID: 16828723.

Lumb AB, Slinger P. Hypoxic pulmonary vasoconstriction: physiology and anesthetic implications. Anesthesiology. 2015 Apr;122(4):932-46. doi: 10.1097/ALN.0000000000000569. PMID: 25587641.

Timour G, Fréderic V, Olivier S, Shango DN. Nicardipine-induced acute respiratory failure: Case report and literature review. Clin Case Rep. 2023 May 1;11(5):e7186. doi: 10.1002/ccr3.7186. PMID: 37143457; PMCID: PMC10151601.

McMurtry IF, Davidson AB, Reeves JT, Grover RF. Inhibition of hypoxic pulmonary vasoconstriction by calcium antagonists in isolated rat lungs. Circ Res. 1976 Feb;38(2):99-104. doi: 10.1161/01.RES.38.2.99. PMID: 1245025.

Simonneau G, Escourrou P, Duroux P, Lockhart A. Inhibition of hypoxic pulmonary vasoconstriction by nifedipine. N Engl J Med. 1981 Jun 25;304(26):1582-5. doi: 10.1056/NEJM198106253042606. PMID: 7231503.

Kennedy T, Summer W. Inhibition of hypoxic pulmonary vasoconstriction by nifedipine. Am J Cardiol. 1982 Oct;50(4):864-8. doi: 10.1016/0002-9149(82)91246-2. PMID: 7124646.

Chrétien B, Decros JB, Suard F, Dolladille C, Fischer MO, Alexandre J, Descamps R. Hypoxia Associated With Dihydropyridine Calcium Channel Inhibitors: A Pharmacovigilance Study in VigiBase. Clin Pharmacol Ther. 2023 Sep;114(3):686-692. doi: 10.1002/cpt.2970. Epub 2023 Jun 29. PMID: 37309986.

Burghuber OC. Nifedipine attenuates acute hypoxic pulmonary vasoconstriction in patients with chronic obstructive pulmonary disease. Respiration. 1987;52(2):86-93. doi: 10.1159/000195309. PMID: 3671896.

Suard F, Mombrun M, Fischer MO, Hanouz JL, Decros JB, Derville S, Gakuba C, Al Issa G, Menard C, Chretien B, Descamps R. Oxygenation Effects of Antihypertensive Agents in Intensive Care: A Prospective Comparative Study of Nicardipine and Urapidil. Clin Pharmacol Ther. 2025 Mar;117(3):742-748. doi: 10.1002/cpt.3509. Epub 2024 Nov 27. PMID: 39604146.

  continue reading

160 episodes

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