Vasopressin in Septic Shock; Assessment of Sepsis Biomarkers: A Randomized, Controlled Trial

THE EFFECT OF CATECHOLAMINE VERSUS NONCATECHOLAMINE VASOPRESSORS ON RENAL FUNCTION AND RECOVERY IN VASODILATORY SHOCK: A SYSTEMATIC REVIEW OF PRECLINICAL AND CLINICAL STUDIES

ABSTRACT

Background: Acute kidney injury (AKI) is a common complication of vasodilatory shock. AKI is associated with an increased risk of death, prolonged hospital stays, and subsequent transition to chronic kidney disease. Catecholamines have historically been used as the first-line vasopressors for vasodilatory shock; however, they may adversely affect renal function and recovery. Objectives: To compare the effects of catecholamine and noncatecholamine vasopressors on AKI risk and recovery in preclinical and clinical studies of vasodilatory shock. Methods: MEDLINE, Embase, and Cochrane Central Register of Controlled Trials were systematically searched to identify studies reporting renal outcomes associated with catecholamine (norepinephrine, epinephrine, metaraminol, phenylephrine, dopamine) and noncatecholamine vasopressors (vasopressin, angiotensin II), in preclinical models or adult cohorts of vasodilatory shock. Two independent reviewers screened studies and extracted data using a prespecified form for qualitative synthesis and risk of bias assessment. Results: Of 3,504 citations, 90 studies were eligible for inclusion: 41 preclinical studies, 17 nonrandomized clinical studies, 28 randomized clinical studies, and 4 post-hoc analyses. Risk of bias was generally low in preclinical studies and low to moderate in clinical studies. In preclinical studies, catecholamine vasopressors exacerbated medullary hypoxia and intrarenal inflammation compared to noncatecholamine vasopressors. In clinical studies, catecholamines were associated with higher serum creatinine, lower urine output, and increased requirements for renal replacement therapy compared to noncatecholamine vasopressors. In patients on high-dose catecholamines, adjunctive angiotensin II was associated with improved renal replacement therapy liberation. Conclusion: Preclinical and clinical studies suggest that noncatecholamine vasopressors may confer renal benefits compared to catecholamine vasopressors. These hypothesis-generating observations suggest the need for comparative studies focused on renal outcomes. Systematic Review Registration : PROSPERO 2024 CRD42024527773.

Early management of adult sepsis and septic shock: Korean clinical practice guidelines

BACKGROUND

Despite recent advances and global improvements in sepsis recognition and supportive care, mortality rates remain high, and adherence to sepsis bundle components in Korea is low. To address this, the Korean Sepsis Alliance, affiliated with the Korean Society of Critical Care Medicine, developed the first sepsis treatment guidelines for Korea based on a comprehensive systematic review and meta-analysis.

METHODS

A de novo method was used to develop the guidelines. Methodologies included determining key questions, conducting a literature search and selection, assessing the risk of bias, synthesizing evidence, and developing recommendations. The certainty of evidence and the strength of recommendations were determined using the Grading of Recommendations, Assessment, Development, and Evaluations approach. Draft recommendations underwent internal and external review processes and public hearings. The development of these guidelines was supported by a research grant from the Korean Disease Control and Prevention Agency.

RESULTS

In these guidelines, we focused on early treatments for adult patients with sepsis and septic shock. Through the guideline development process, 12 key questions and their respective recommendations were formulated. These include lactate measurement, fluid therapies, target blood pressure, antibiotic administration, use of vasopressors and dobutamine, extracorporeal membrane oxygenation, and echocardiography.

CONCLUSIONS

These guidelines aim to support medical professionals in making appropriate decisions about treating adult sepsis and septic shock. We hope these guidelines will increase awareness of sepsis and reduce its mortality rate.

THE EFFICACY AND SAFETY OF VASOPRESSORS FOR SEPTIC SHOCK PATIENTS: A SYSTEMIC REVIEW AND NETWORK META-ANALYSIS

ABSTRACT

Background: Septic shock is a distributive shock with decreased systemic vascular resistance and MAP. Septic shock contributes to the most common causes of death in the intensive care unit (ICU). Current guidelines recommend the use of norepinephrine as the first-line vasopressor, whereas adrenergic agonists and vasopressin analogs are also commonly used by physicians. To date, very few studies have synthetically compared the effects of multiple types of vasoactive medications. The aim of this study was to systemically evaluate the efficacy of vasoactive agents both individually and in combination to treat septic shock. Methods: The PubMed, MEDLINE, Embase, Web of Science, and Cochrane Central Register for Controlled Trials (CENTRAL) were searched up to May 12, 2022, to identify relevant randomized controlled trials. A network meta-analysis was performed to evaluate the effect of different types of vasopressors. The primary outcome was 28-day all-cause mortality. The secondary outcome was the ICU length of stay. Adverse events are defined as any undesirable outcomes, including myocardial infarction, cardiac arrhythmia, peripheral ischemia, or stroke and cerebrovascular events. Findings: Thirty-three randomized controlled trials comprising 4,966 patients and assessing 8 types of vasoactive treatments were included in the network meta-analysis. The surface under the cumulative ranking curve provided a ranking of vasoactive medications in terms of 28-day all-cause mortality from most effective to least effective: norepinephrine plus dobutamine, epinephrine, vasopressin, terlipressin, norepinephrine, norepinephrine plus vasopressin, dopamine, and dobutamine. Dopamine was associated with a significantly shorter ICU stay than norepinephrine, terlipressin, and vasopressin, whereas other vasoactive medications showed no definite difference in ICU length of stay. Regarding adverse events, norepinephrine was associated with the highest incidences of myocardial infarction and peripheral ischemia. Dopamine was associated with the highest incidence of cardiac arrhythmia. Epinephrine and terlipressin were associated with the highest incidences of myocardial infarction and peripheral ischemia. Interpretation: The results of this network meta-analysis suggest that norepinephrine plus dobutamine is associated with a lower risk of 28-day mortality in septic shock patients than other vasoactive medications, and the use of dopamine is associated with a higher risk of 28-day mortality due to septic shock than norepinephrine, terlipressin, and vasopressin.

Comparison of Norepinephrine and Terlipressin vs Norepinephrine Alone for Management of Septic Shock: A Randomized Control Study

PURPOSE

To compare norepinephrine and terlipressin vs norepinephrine alone for management of septic shock.

MATERIALS AND METHODS

In this prospective, randomized control trial, 50 adult patients with septic shock were randomized into two groups. Group I received a combination of injection terlipressin 0.02 µg/kg/min (fixed dose) infusion and injection norepinephrine 0.01 µg/kg/min infusion and group II received injection norepinephrine 0.01 µg/kg/min infusion alone. Dose of noradrenaline in both the groups was titrated to achieve the target MAP of 65-70 mm Hg. The data collected were the dose of norepinephrine required to maintain an MAP of above 65 mm Hg, urine output, serum lactate, procalcitonin level, C-reactive protein, sequential organ failure assessment (SOFA) score, total duration of vasopressor support, and incidences of the adverse effects.

RESULTS

The norepinephrine dose in group I vs group II at 12 hours was found to be 0.141 ± 0.067 vs 0.374 ± 0.096 µg/kg/min (p ≤0.005). The serum lactate was lower, and urine output was higher in group I than group II (p <0.05). Group I had a significantly greater reduction in SOFA score in 12 hours than group II. Group I patient also had a significant decrease in the duration of vasopressor administration than group II patients being discharged from the ICU. However, there was no difference in the mortality between the two groups during their ICU stay.

CONCLUSION

A low-dose continuous infusion of terlipressin and norepinephrine could help attain early resuscitation goals for managing patients with septic shock.

HOW TO CITE THIS ARTICLE

Sahoo P, Kothari N, Goyal S, Sharma A, Bhatia PK. Comparison of Norepinephrine and Terlipressin vs Norepinephrine Alone for Management of Septic Shock: A Randomized Control Study. Indian J Crit Care Med 2022;26(6):669-675.

Neutrophil to Lymphocyte Ratio and Platelet to Lymphocyte Percentage Ratio as Predictors of In-hospital Mortality in Sepsis. An Observational Cohort Study

BACKGROUND

Sepsis remains a major public health problem with increased incidence of mortality. As early recognition and prompt treatment in the first 'golden hour' remain the cornerstone of the septic patient approach, there is a real need for rapid and cost-effective reliable markers.

OBJECTIVE

The aim of the study was to evaluate the neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte percentage ratio (PL%R) in patients with sepsis who were initially treated in the Emergency Department and investigate their predictive ability regarding in-hospital mortality and performance comparing them to SOFA, APACHE II, and SAPS II score.

METHODS

A retrospective observational study in the Emergency Department and Internal Medicine Department in a Mediterranean University Hospital. A total of forty-three patients suffering from sepsis were enrolled in the study. Demographic information, past medical history with pre-existing co-morbidities, physical examination findings, and radiological data were reviewed. Neutrophil to lymphocyte ratio and platelets to lymphocyte percentage ratio was calculated from the complete blood count (CBC). Disease severity was evaluated by calculating SOFA, SAPS II and APACHE II score on admission. The outcome of patients was noted as a primary endpoint.

RESULTS

Values of NLR and PL%R were statistically significantly higher in the group of non-survivors and correlate with sepsis prognostic scores.

CONCLUSION

Calculation of NLR and PL%R is easy, fast, and inexpensive in the assessment of patients with sepsis. Their role as prognostic indexes and their validity in the Emergency Department setting should be evaluated with large prospective studies.

Vasopressin Versus Norepinephrine for the Management of Septic Shock in Cancer Patients: The VANCS II Randomized Clinical Trial

OBJECTIVES

Previous trials suggest that vasopressin may improve outcomes in patients with vasodilatory shock. The aim of this study was to evaluate whether vasopressin could be superior to norepinephrine to improve outcomes in cancer patients with septic shock.

DESIGN

Single-center, randomized, double-blind clinical trial, and meta-analysis of randomized trials.

SETTING

ICU of a tertiary care hospital.

PATIENTS

Two-hundred fifty patients 18 years old or older with cancer and septic shock.

INTERVENTIONS

Patients were assigned to either vasopressin or norepinephrine as first-line vasopressor therapy. An updated meta-analysis was also conducted including randomized trials published until October 2018.

MEASUREMENTS AND MAIN RESULTS

The primary outcome was all-cause mortality at 28 days after randomization. Prespecified secondary outcomes included 90-days all-cause mortality rate; number of days alive and free of advanced organ support at day 28; and Sequential Organ Failure Assessment score 24 hours and 96 hours after randomization. We also measure the prevalence of adverse effects in 28 days. A total of 250 patients were randomized. The primary outcome was observed in 71 patients (56.8%) in the vasopressin group and 66 patients (52.8%) in the norepinephrine group (p = 0.52). There were no significant differences in 90-day mortality (90 patients [72.0%] and 94 patients [75.2%], respectively; p = 0.56), number of days alive and free of advanced organ support, adverse events, or Sequential Organ Failure Assessment score.

CONCLUSIONS

In cancer patients with septic shock, vasopressin as first-line vasopressor therapy was not superior to norepinephrine in reducing 28-day mortality rate.

The Protective Effects and the Involved Mechanisms of Tanshinone IIA on Sepsis-Induced Brain Damage in Mice

To evaluate the protective effect of tanshinone IIA on sepsis using a mouse model as well as to preliminarily explore the mechanism behind its application. The mouse model of sepsis was established using the cecal ligation and puncture (CLP) method. Eighty mice were randomly divided into four groups: Sham operation group (Sham group), model group (CLP group), tanshinone IIA group (DS group), and dexamethasone group (DEX group). ELISA method was used to detect the levels of TNF-α and IL-6 in the hippocampal tissue of mouse. Western blot method was used to detect the expression levels of PSD-95, SYP, and Iba-1 in the hippocampus tissue. Immunohistochemistry was used to detect the expression level and distribution of astrocytes (GFAP antibody). Morris water maze test was used to determine the ability of learning and memory in mice. Tanshinone IIA could improve the postoperative survival and 7-day survival rate in the septic mice after operation, which shortens the escape latency and increases the number of crossing platform in the septic mice. It also reduces the expression of TNF-α, IL-6, and Iba-1 in the peripheral blood/hippocampus and the number of astrocytes in hippocampal CA3 area after 7 days of sepsis in mice. However, tanshinone IIA increases the expression levels of SYP and PSD-95 in the hippocampus of septic mice on the seventh day after operation. Tanshinone IIA has a protective effect on the nerve of septic mice, and its mechanism may be related to the anti-inflammatory effects of the peripheral and hippocampal parts as well as inhibiting the over-activation of astrocytes and microglia.

Vasopressin in septic shock: an individual patient data meta-analysis of randomised controlled trials

PURPOSE

We performed an individual patient data meta-analysis to investigate the possible benefits and harms of vasopressin therapy in adults with septic shock both overall and in pre-defined subgroups.

METHODS

Our pre-specified study protocol is published on PROSPERO, CRD42017071698. We identified randomised clinical trials up to January 2019 investigating vasopressin therapy versus any other vasoactive comparator in adults with septic shock. Individual patient data from each trial were compiled. Conventional two-stage meta-analyses were performed as well as one-stage regression models with single treatment covariate interactions for subgroup analyses.

RESULTS

Four trials were included with a total of 1453 patients. For the primary outcomes, there was no effect of vasopressin on 28-day mortality [relative risk (RR) 0.98, 95% CI 0.86-1.12] or serious adverse events (RR 1.02, 95% CI 0.82-1.26). Vasopressin led to more digital ischaemia [absolute risk difference (ARD) 1.7%, 95% CI 0.3%-3.2%] but fewer arrhythmias (ARD - 2.8%, 95% CI - 0.2% to - 5.3%). Mesenteric ischaemia and acute coronary syndrome events were similar between groups. Vasopressin reduced the requirement for renal replacement therapy (RRT) (RR 0.86, 95% CI 0.74-0.99), but this finding was not robust to sensitivity analyses. There were no statistically significant interactions in the pre-defined subgroups (baseline kidney injury severity, baseline lactate, baseline norepinephrine requirement and time to study inclusion).

CONCLUSIONS

Vasopressin therapy in septic shock had no effect on 28-day mortality although the confidence intervals are wide. It appears safe but with a different side effect profile from norepinephrine. The finding on reduced RRT should be interpreted cautiously. Future trials should focus on long-term outcomes in select patient groups as well as incorporating cost effectiveness analyses regarding possible reduced RRT use.