Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: The Effects of Hypercapnia, Supplemental Oxygen, and Dexamethasone on Surgical Wound Infection
Brief Summary: The investigators will test the hypotheses that mild hypercapnia and supplemental oxygen reduce wound infection risk in patients undergoing colon resection. The investigators will simultaneously test the hypothesis that low-dose dexamethasone (a common treatment for postoperative nausea and vomiting) does not increase infection risk.


Options:
A: Intervention Type: OTHER; Name: Mild intraoperative hypercapnia (50 mmHg vs. 30 mmHg); Assigned to Arm(s): N/A | Intervention Type: OTHER; Name: Supplemental oxygen (80% vs. 30%); Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: Dexamethasone; Assigned to Arm(s): N/A | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): N/A
B: Arm Label: Adductor Canal block; Type: ACTIVE_COMPARATOR; Interventions: Drug: Adductor canal block, Drug: Bupivacaine, Drug: Fentanyl, Drug: Ropivacaine 0.5% Injectable Solution | Arm Label: Adductor canal block with dexamethasone; Type: ACTIVE_COMPARATOR; Interventions: Drug: Adductor canal block with dexamethasone, Drug: Bupivacaine, Drug: Fentanyl, Drug: Ropivacaine 0.5% Injectable Solution, Drug: Dexamethasone | Arm Label: Adductor canal catheter; Type: ACTIVE_COMPARATOR; Interventions: Drug: Adductor canal catheter, Drug: Bupivacaine, Drug: Fentanyl, Drug: Ropivacaine 0.5% Injectable Solution | Intervention Type: DRUG; Name: Adductor canal block; Assigned to Arm(s): Adductor Canal block | Intervention Type: DRUG; Name: Adductor canal block with dexamethasone; Assigned to Arm(s): Adductor canal block with dexamethasone | Intervention Type: DRUG; Name: Adductor canal catheter; Assigned to Arm(s): Adductor canal catheter | Intervention Type: DRUG; Name: Bupivacaine; Assigned to Arm(s): Adductor Canal block, Adductor canal block with dexamethasone, Adductor canal catheter | Intervention Type: DRUG; Name: Fentanyl; Assigned to Arm(s): Adductor Canal block, Adductor canal block with dexamethasone, Adductor canal catheter | Intervention Type: DRUG; Name: Ropivacaine 0.5% Injectable Solution; Assigned to Arm(s): Adductor Canal block, Adductor canal block with dexamethasone, Adductor canal catheter | Intervention Type: DRUG; Name: Dexamethasone; Assigned to Arm(s): Adductor canal block with dexamethasone
C: Arm Label: PLACEBO Group; Type: PLACEBO_COMPARATOR; Interventions: Drug: PLACEBO | Arm Label: DEXAMETHASONE Group; Type: ACTIVE_COMPARATOR; Interventions: Drug: Dexamethasone | Arm Label: ONDANSETRON; Type: ACTIVE_COMPARATOR; Interventions: Drug: Ondansetron | Arm Label: DEXAMETHASONE + ONDANSETRON; Type: ACTIVE_COMPARATOR; Interventions: Drug: Dexamethasone + Ondansetron | Intervention Type: DRUG; Name: PLACEBO; Assigned to Arm(s): PLACEBO Group | Intervention Type: DRUG; Name: Dexamethasone; Assigned to Arm(s): DEXAMETHASONE Group | Intervention Type: DRUG; Name: Ondansetron; Assigned to Arm(s): ONDANSETRON | Intervention Type: DRUG; Name: Dexamethasone + Ondansetron; Assigned to Arm(s): DEXAMETHASONE + ONDANSETRON
D: Arm Label: Ultrasound guided bilateral TAP block; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Transversus abdominis plane block (TAP BLOCK) | Arm Label: Instillation of surgical site with local anesthestic.; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Instillation of surgical site with local anesthetic. | Arm Label: Control Group; Type: PLACEBO_COMPARATOR; Interventions: Procedure: Opioid IV medications (Control) | Intervention Type: PROCEDURE; Name: Transversus abdominis plane block (TAP BLOCK); Assigned to Arm(s): Ultrasound guided bilateral TAP block | Intervention Type: PROCEDURE; Name: Instillation of surgical site with local anesthetic.; Assigned to Arm(s): Instillation of surgical site with local anesthestic. | Intervention Type: PROCEDURE; Name: Opioid IV medications (Control); Assigned to Arm(s): Control Group

Answer: A