Effects of Electrical Impedance Tomography-Guided Positive End-Expiratory Pressure on Postoperative Cardiopulmonary Exercise Capacity in Elderly Patients: Study Protocol for a Randomized Controlled Trial

09 January 2023 : Clinical Research

Wentao Liu

^1BE, Kang Yu^1B, Li Xiao^1B, Danyang Gao^1B, Xiao Liu^1B, Ying Cao^1B, Xiaowan Lin

^1B, Lei Liu^2C, Huihui Miao^1AG*, Tianzuo Li^1AE

DOI: 10.12659/MSM.938333

Med Sci Monit 2023; 29:e938333

Background Material and Methods Discussion Conclusions References

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Table 1 The schedule of enrollment, interventions, and assessments.

Timepoint	Study period									Close-out
	Enrolment	Allocation	Post-allocation							Close-out
	Preoperative visit	Before anesthesia	After intubation	During anesthesia	End of surgery	POD1	POD3	POD7	Before hospital discharge	Hospital discharge
Enrollment
Eligibility screen	X
Informed consent	X
Demographic data	X
ARISCAT score	X
Allocation		X
Interventions
Intervention group			X
Control group
Assessments
Cardiopulmonary exercise test	X								X
Respiratory parameters										X
Electrical impedance tomography
Blood gas analysis	X		X	X	X	X				X
Hemodynamic variables
Incidence of postoperative complications						X	X	X
Adverse events
Hospital stay/ Intensive Care Unit stay										X
POD – postoperative day; ARISCAT – Assess Respiratory Risk in Surgical Patients in Catalonia.

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