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Xiang H, Zhao Y, Ma S, Li Q, Kashani KB, Peng Z, Li J, Hu B. Dose-related effects of norepinephrine on early-stage endotoxemic shock in a swine model. JOURNAL OF INTENSIVE MEDICINE 2023; 3:335-344. [PMID: 38028636 PMCID: PMC10658043 DOI: 10.1016/j.jointm.2023.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/20/2023] [Accepted: 06/20/2023] [Indexed: 12/01/2023]
Abstract
Background The benefits of early use of norepinephrine in endotoxemic shock remain unknown. We aimed to elucidate the effects of different doses of norepinephrine in early-stage endotoxemic shock using a clinically relevant large animal model. Methods Vasodilatory shock was induced by endotoxin bolus in 30 Bama suckling pigs. Treatment included fluid resuscitation and administration of different doses of norepinephrine, to induce return to baseline mean arterial pressure (MAP). Fluid management, hemodynamic, microcirculation, inflammation, and organ function variables were monitored. All animals were supported for 6 h after endotoxemic shock. Results Infused fluid volume decreased with increasing norepinephrine dose. Return to baseline MAP was achieved more frequently with doses of 0.8 µg/kg/min and 1.6 µg/kg/min (P <0.01). At the end of the shock resuscitation period, cardiac index was higher in pigs treated with 0.8 µg/kg/min norepinephrine (P <0.01), while systemic vascular resistance was higher in those receiving 0.4 µg/kg/min (P <0.01). Extravascular lung water level and degree of organ edema were higher in animals administered no or 0.2 µg/kg/min norepinephrine (P <0.01), while the percentage of perfused small vessel density (PSVD) was higher in those receiving 0.8 µg/kg/min (P <0.05) and serum lactate was higher in the groups administered no and 1.6 µg/kg/min norepinephrine (P <0.01). Conclusions The impact of norepinephrine on the macro- and micro-circulation in early-stage endotoxemic shock is dose-dependent, with very low and very high doses resulting in detrimental effects. Only an appropriate norepinephrine dose was associated with improved tissue perfusion and organ function.
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Affiliation(s)
- Hui Xiang
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
| | - Yuqian Zhao
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
| | - Siqing Ma
- Department of Critical Care Medicine, Qinghai Provincial People's Hospital, Xining 810007, Qinghai, China
| | - Qi Li
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
| | - Kianoush B. Kashani
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Zhiyong Peng
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
| | - Jianguo Li
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
| | - Bo Hu
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
- Clinical Research Center of Hubei Critical Care Medicine, Wuhan 430071, Hubei, China
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Singh VK, Sharma R, Agrawal A, Varma A. Vasopressin in the pediatric cardiac intensive care unit: Myth or reality. Ann Pediatr Cardiol 2009; 2:65-73. [PMID: 20300273 PMCID: PMC2840775 DOI: 10.4103/0974-2069.52814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Pediatric cardiac surgery is undergoing a metamorphosis, with more and more critical patients being operated in our country today. Although the principles of physiology have not changed, it is imperative that care providers continue to stay abreast with developments and newer drugs that may help modify the outcome. The team dynamics have also become more complex, which necessitates the need for all care providers (surgeons, cardiologists, anesthesiologists, and intensivists) to better understand the interactions and benefits of newer drugs. Vasopressin has been used in our adult patients for more than a decade and recently has found its rightful place in the pediatric armoury. The objective of this article is to review the physiology of vasopressin and the rationale of its use in critically ill children with shock, in context of the available published data.
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Affiliation(s)
- Vishal K Singh
- Escorts Heart Institute and Research Center, Okhla Road, New Delhi, India
| | - Rajesh Sharma
- Escorts Heart Institute and Research Center, Okhla Road, New Delhi, India
| | - Amit Agrawal
- Escorts Heart Institute and Research Center, Okhla Road, New Delhi, India
| | - Amit Varma
- Fortis & Escorts Heart Institute and Research Center Limited, Okhla Road, New Delhi, India
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Westphal M, Sielenkämper AW, Van Aken H, Stubbe HD, Daudel F, Schepers R, Schulte S, Bone HG. Dopexamine Reverses the Vasopressin-Associated Impairment in Tissue Oxygen Supply but Decreases Systemic Blood Pressure in Ovine Endotoxemia. Anesth Analg 2004; 99:878-885. [PMID: 15333425 DOI: 10.1213/01.ane.0000131970.54062.1c] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Since arginine vasopressin (AVP) may reduce cardiac output and, in proportion, oxygen delivery, we studied the efficacy of dopexamine (DPX) as an adjunct to AVP infusion. After 1 h of continuous AVP infusion (0.04 U/min) in healthy sheep (n = 7), DPX was additionally administered in incremental doses (1, 5, and 10 microg. kg(-1). min(-1); each dose for 30 min). After a 24-h period of recovery, endotoxin was continuously infused in the same sheep to induce and maintain a hypotensive/hyperdynamic circulation. After 16 h of endotoxemia, AVP and DPX were given as described previously. AVP infusion increased systemic vascular resistance index and decreased cardiac index in both healthy and endotoxemic conditions (P < 0.001 each). This was accompanied by an augmented pulmonary vascular resistance index in endotoxemia (159 +/- 13 dynes. cm(-5). m(-2) versus 202 +/- 16 dynes. cm(-5). m(-2)) and a decrease in oxygen delivery index (health: 842 +/- 66 mL. min(-2). m(-2) versus 475 +/- 38 mL. min(-2). m(-2); endotoxemia: 1073 +/- 49 mL. min(-2). m(-2) versus 613 +/- 44 mL. min(-2). m(-2)) and mixed venous oxygen content (health: 63% +/- 2% versus 47% +/- 2%; endotoxemia: 68% +/- 2% versus 51% +/- 3%; P < 0.001 each). Small doses of DPX (1 and 5 microg. kg(-1). min(-1)) improved not only the AVP-associated depressions in cardiac index, oxygen delivery index, and mixed venous oxygen content, but also the pulmonary vasopressive effect in both groups. While large-dose DPX (10 microg. kg(-1). min(-1)) also reduced mean pulmonary arterial pressure in endotoxemia (27 +/- 1 mm Hg versus 23 +/- 1 mm Hg; P < 0.05 versus baseline), mean arterial blood pressure decreased (105 +/- 4 mm Hg versus 80 +/- 3 mm Hg) and heart rate increased (84 +/- 4 bpm versus 136 +/- 9 bpm; P < 0.001 versus AVP alone), thereby limiting its therapeutic use.
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Affiliation(s)
- Martin Westphal
- Department of Anesthesiology and Intensive Care, University of Muenster, Muenster, Germany
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