Effect of Different Strategies for Titrating a High MAP on Microcirculation

The Effect of Fluids and Norepinephrine for Mean Arterial Pressure Titration to Patients' Usual Levels on the Microcirculation of Initial Resuscitated Hypertensive Septic Shock Patients.

Assess the effect of fluids and norepinephrine for mean arterial pressure titration to patients' usual level on the microcirculation of initial resuscitated hypertensive septic shock patients.

Study Overview

• Status: Completed
• Conditions: Hypertension; Septic Shock
• Intervention / Treatment: Drug: Crystalloid; Drug: Norepinephrine

Detailed Description

Microcirculatory dysfunction plays an important role in the development of organ failure in patients with septic shock. Numerous studies focus on the effect of mean arterial pressure (MAP) titration on microcirculation, however, by what strategy is better for microcirculation in septic shock patients with previous hypertension is still a matter of debate. The goal of this study was to assess the effect of different strategies for MAP titration to individualized level on microcirculation in hypertensive septic shock patients.

• Study Type: Interventional
• Enrollment (Actual): 24
• Phase: Phase 4

Contacts and Locations

Study Locations

• China
  • Jiangsu
    • Nanjing, Jiangsu, China, 210000
      • Nanjing Zhongda Hospital, Southeast University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 100 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Hypertensive patients with septic shock for less than 24 hours. Septic shock was defined by the 2001 SCCM/ESICM/ACCP/ATS/SIS International Sepsis Definitions Conference.
2. Initial fluid resuscitation was performed to maintain the central venous pressure (CVP) for more than 8 mm Hg and central venous hemoglobin saturation for more than 70%.
3. Patients were still requiring NE to maintain the MAP of 65 mm Hg.

Exclusion Criteria:

1. had severe untreated or uncontrolled hypertension (systolic blood pressure more than 180 mm Hg or/and diastolic blood pressure more than 110 mm Hg);
2. were younger than 18 years old or pregnant;
3. were unable to acquire the usual level or resting level of blood pressure;
4. refused to participate the trial.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Resp-FL; Patients received 500 ml crystalloid for fluid challenge within 20 minutes, then a PLR test was performed to predict fluid responsiveness. If the patient was fluid responsive, more 500 ml crystalloids were given until fluid nonresponsive. If the MAP still not achieved the target value, NE was increased to achieve the target one. The target MAP was maintain MAP within 10% of the reference value.	Drug: Crystalloid; Patients received 500 ml crystalloid for fluid challenge within 20 minutes, then a PLR test was performed to predict fluid responsiveness. If the patient was fluid responsive, more 500 ml crystalloids were given until fluid nonresponsive. If the MAP still not achieved the target value, NE was increased to achieve the target one.; Other Names: Fluid group
Experimental: Resp-NE; In Resp-NE group, norepinephrine was increased to enhance MAP within 10% of the reference value.	Drug: Norepinephrine; Norepinephrine infusion to titrate MAP to usual level; Other Names: NE group
Experimental: Nonresp-NE; In Nonresp-NE group, norepinephrine was increased to enhance MAP within 10% of the reference value.	Drug: Norepinephrine; Norepinephrine infusion to titrate MAP to usual level; Other Names: NE group

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Perfused vessel density	Perfused vessel density of small vessels	20 minutes

Collaborators and Investigators

• Sponsor: Southeast University, China
• Investigators: Principal Investigator: Haibo Qiu, Southeastt University

Publications and helpful links

General Publications

• Rhee C, Dantes R, Epstein L, Murphy DJ, Seymour CW, Iwashyna TJ, Kadri SS, Angus DC, Danner RL, Fiore AE, Jernigan JA, Martin GS, Septimus E, Warren DK, Karcz A, Chan C, Menchaca JT, Wang R, Gruber S, Klompas M; CDC Prevention Epicenter Program. Incidence and Trends of Sepsis in US Hospitals Using Clinical vs Claims Data, 2009-2014. JAMA. 2017 Oct 3;318(13):1241-1249. doi: 10.1001/jama.2017.13836.
• Elbers PW, Ince C. Mechanisms of critical illness--classifying microcirculatory flow abnormalities in distributive shock. Crit Care. 2006;10(4):221. doi: 10.1186/cc4969.
• Futier E, Lefrant JY, Guinot PG, Godet T, Lorne E, Cuvillon P, Bertran S, Leone M, Pastene B, Piriou V, Molliex S, Albanese J, Julia JM, Tavernier B, Imhoff E, Bazin JE, Constantin JM, Pereira B, Jaber S; INPRESS Study Group. Effect of Individualized vs Standard Blood Pressure Management Strategies on Postoperative Organ Dysfunction Among High-Risk Patients Undergoing Major Surgery: A Randomized Clinical Trial. JAMA. 2017 Oct 10;318(14):1346-1357. doi: 10.1001/jama.2017.14172.
• Xu JY, Ma SQ, Pan C, He HL, Cai SX, Hu SL, Liu AR, Liu L, Huang YZ, Guo FM, Yang Y, Qiu HB. A high mean arterial pressure target is associated with improved microcirculation in septic shock patients with previous hypertension: a prospective open label study. Crit Care. 2015 Mar 30;19:130. doi: 10.1186/s13054-015-0866-0.
• Pottecher J, Deruddre S, Teboul JL, Georger JF, Laplace C, Benhamou D, Vicaut E, Duranteau J. Both passive leg raising and intravascular volume expansion improve sublingual microcirculatory perfusion in severe sepsis and septic shock patients. Intensive Care Med. 2010 Nov;36(11):1867-74. doi: 10.1007/s00134-010-1966-6. Epub 2010 Aug 20.

Study record dates

Study Major Dates

• Study Start (Actual): March 1, 2014
• Primary Completion (Actual): September 1, 2016
• Study Completion (Actual): September 1, 2017

Study Registration Dates

• First Submitted: February 28, 2014
• First Submitted That Met QC Criteria: March 10, 2014
• First Posted (Estimate): March 12, 2014

Study Record Updates

• Last Update Posted (Actual): January 31, 2018
• Last Update Submitted That Met QC Criteria: January 30, 2018
• Last Verified: January 1, 2018

More Information

Terms related to this study

• Keywords: septic shock; microcirculation; norepinephrine
• Additional Relevant MeSH Terms: Pathologic Processes; Infections; Systemic Inflammatory Response Syndrome; Inflammation; Sepsis; Shock, Septic; Shock; Physiological Effects of Drugs; Adrenergic Agents; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Autonomic Agents; Peripheral Nervous System Agents; Adrenergic alpha-Agonists; Adrenergic Agonists; Sympathomimetics; Vasoconstrictor Agents; Norepinephrine
• Other Study ID Numbers: 2014ZDll.2; Targeting microcirculation (Other Identifier: Zhongda Hospital)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No