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Table 1 Study visits of the REDUCE trial. NRS, Numeric Rating Scale; PSS: patient satisfaction score; GCS, Glasgow Coma Scale score; LOS, length of stay; PACU, postoperative care unit; PONV, postoperative nausea and vomiting; HR, heart rate; MAP, mean arterial pressure; AEs, adverse events; SAEs, serious adverse events

From: REDUCE trial: the effects of perineural dexamethasone on scalp nerve blocks for relief of postcraniotomy pain—a study protocol for a randomized controlled trial

 

Study period

 

Enrollment

Allocation

Post allocation

Time point

Preoperative

0 d

surgery

2 h

4 h

8 h

12 h

16 h

20 h

1d

2d

Discharge

Enrollment

Eligibility screen

X

           

Informed consent

X

           

Allocation

 

X

          

Interventions

Scalp nerve blocks with bupivacaine

 

X

          

Scalp nerve blocks with bupivacaine plus 4 mg dexamethasone

 

X

          

Assessments

Baseline variables

X

X

X

         

Intraoperative data

  

X

         

The duration of analgesia

         

X

X

 

NRS score

   

X

X

X

X

X

X

X

X

 

GCS score

   

X

X

X

X

X

X

X

X

 

PSS

   

X

X

X

X

X

X

X

X

 

LOS

           

X

PONV

   

X

X

X

X

X

X

X

X

 

Bradycardia

   

X

X

X

X

X

X

X

X

 

Hypotension

   

X

X

X

X

X

X

X

X

 

Emergence delirium

   

X

X

X

X

X

X

X

X

 

HR and MAP

  

X

         

Occurrence of AEs and SAEs

  

X

X

X

X

X

X

X

X

X

X