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Table 1 Study characteristics and overall risk-of-bias assessment for each study

From: Effects of perioperative goal-directed fluid therapy combined with the application of alpha-1 adrenergic agonists on postoperative outcomes: a systematic review and meta-analysis

Trial/author, year [reference]

Number of patients

Nature of surgery

Goal-directed hemodynamic therapy

Overall risk of bias

Goal

Monitoring method

Type of α1 adrenergic agonists application

Bartha et al., 2013 [24]

149

Proximal femoral fracture

DO2I > 600 mL/(min · m2), ΔSV < 10%

Pulse contour analysis monitor

Phenylephrine

High

Benes et al., 2015 [25]

80

Total knee and hip replacement

PPV < 13%

Pulse contour analysis monitor

Norepinephrine

Low

Bisgaard, et al., 2013 [26]

64

Abdominal aortic surgery

SVI < 10%, DO2I ≥ 600 mL/(min · m2)

Pulse contour analysis monitor

Phenylephrine

Low

Broch et al., 2016 [27]

79

Major abdominal surgery

PPV ≤10%; CI ≥2.5 L/(min · m2)

MAP ≥65 mmHg

Noninvasive hemodynamic optimization

Norepinephrine

Unclear

Elgendy et al., 2017 [28]

86

Major abdominal surgery

SVV ≤12%; CI ≥2.5 L/(min · m2)

MAP ≥65 mmHg

Pulse contour analysis monitor

Norepinephrine

Low

Forget et al., 2010 [29]

82

Major abdominal surgery

PVI < 13%

Pulse oximeter

Norepinephrine

Low

Funk et al., 2015 [30]

40

Open abdominal aortic aneurysm repair

SVV ≤13%, CI ≥2.2 L/(min · m2)

Pulse contour analysis monitor

Norepinephrine

Low

Gan et al., 2002 [31]

100

Major abdominal surgery

FTc > 0.40 s, ΔSV < 10%

Esophageal Doppler

Phenylephrine

High

Gómez-Izquierdo et al., 2017 [32]

128

Elective laparoscopic colorectal surgery

ΔSV < 11%

Esophageal Doppler

Phenylephrine

Low

Hand et al., 2016 [33]

94

Free tissue transfer reconstruction

SVV ≤12%; CI ≥3.0 L/(min · m2), MAP > 75 mmHg

Pulse contour analysis monitor

Phenylephrine

High

Kaufmann et al., 2017 [34]

96

Thoracic surgery

ΔSV < 10%; CI ≥2.5 L/(min · m2), MAP ≥70 mmHg

Esophageal Doppler

Norepinephrine

Low

Kumar et al., 2015 [35]

40

Major abdominal surgery

SVV ≤10%; O2ER < 27%, MAP > 65 mmHg

Pulse contour analysis monitor

Norepinephrine

Unclear

Luo et al., 2017 [36]

145

Brain surgery

SVV ≤15%; CI ≥2.5 L/(min · m2), MAP ≥65 mmHg

Pulse contour analysis monitor

Norepinephrine

Low

Malbouisson et al., 2017 [37]

168

Open major surgery

PPV ≤10%

Pulse contour analysis monitor

Norepinephrine

High

Mayer et al., 2010 [38]

60

High-risk surgical

SVV ≤12%; CI ≥2.5 L/(min · m2), SVI ≥35 mL/m2, MAP > 65 mmHg

Pulse contour analysis monitor

Norepinephrine

Low

Moppett et al., 2015 [9]

114

Hip fracture surgery

ΔSV < 10%

Pulse contour analysis monitor

Metaraminol

High

Peng et al., 2014 [39]

80

Major orthopedic surgery

SVV ≤10%

Pulse contour analysis monitor

Phenylephrine

High

Pestaña et al., 2014 [40]

142

Major abdominal surgery

CI ≥2.5 L/(min · m2), MAP ≥65 mmHg

Noninvasive cardiac output monitor

Norepinephrine

Low

Pösö et al., 2014 [41]

46

Laparoscopic bariatric surgery

SVV < 12%, CO, SV, and MAP > 70% baseline

Pulse contour analysis monitor

Phenylephrine

High

Reisinger et al., 2017 [42]

58

Colorectal surgery

ΔSV < 10%, MAP ≥65 mmHg

Esophageal Doppler

Phenylephrine

Low

Salzwedel et al., 2013 [43]

160

Major abdominal surgery

PPV ≤10%; CI ≥2.5 L/(min · m2), MAP ≥65 mmHg

Pulse contour analysis monitor

Norepinephrine, phenylephrine

High

Scheeren et al., 2013 [3]

52

High-risk surgery

SVV ≤10%, ΔSV < 10%

Pulse contour analysis monitor

Norepinephrine

High

Schmid et al., 2016 [44]

180

Major abdominal surgery

GEDI ≤800; CI ≥2.5 L/(min · m2), ELWI ≥10 mL/m2, MAP ≥70 mmHg

Transpulmonary thermodilution monitor

Norepinephrine

Low

Stens et al., 2017 [45]

175

Moderate-risk abdominal surgery

PPV < 12%, CI ≥2.5 L/(min · m2), MAP ≥70 mmHg

Pulse contour analysis monitor

Norepinephrine

Low

Veelo et al., 2017 [46]

199

Esophageal surgery

ΔSV < 10%, MAP ≥65 mmHg

Pulse contour analysis monitor

Norepinephrine, Phenylephrine

Unclear

Wagar et al., 2017 [47]

67

Total pancreatectomy and islet cell autotransplantation

SVV < 12%; CI ≥2.5 L/(min · m2); MAP > 10% baseline

Pulse contour analysis monitor

Phenylephrine

Unclear

Weinberg et al., 2017 [48]

52

Pancreaticoduodenectomy

SVV ≤20%, MAP ≥20% baseline

Pulse contour analysis monitor

Norepinephrine

Low

Wu et al., 2017 [49]

63

Supratentorial neoplasms surgery

SVV ≤12%, CI ≥2.5 L/(min · m2)

Pulse contour analysis monitor

Phenylephrine

Low

Xu et al., 2017 [50]

168

Elective thoracoscopic lobectomy

SVV ≤13%; CI > 2.5 L/(min · m2), ΔSV ≤10%, MAP > 65 mmHg

Pulse contour analysis monitor

Norepinephrine

Low

Zhang et al., 2013 [51]

60

Thoracoscopy lobectomy

SVV < 9%, CI ≥2.5 L/(min · m2)

Pulse contour analysis monitor

Phenylephrine

Low

Zheng et al., 2013 [52]

60

Gastrointestinal surgery

SVI ≤35 mL/m2; MAP > 65 mmHg; SVV < 12%; CI ≥2.5 L/(min · m2)

Pulse contour analysis monitor

Norepinephrine

Low

  1. Abbreviations: CI Cardiac index, CO Cardiac output, CVP Central venous pressure, DO2I Oxygen delivery index, ELWI Extravascular lung water index, FTc Corrected flow time, GEDI Global end-diastolic index, MAP Mean arterial pressure, O2ER Oxygen extraction ratio, PPV Pulse pressure variation, PVI Pleth variability index, SV Stroke volume, SVI Stroke volume index, SVV Stroke volume variation