Study design and search strategy
A database search was conducted using Embase, Cochrane Library, and
Medline to identify relevant studies in October 2021 (Table 1). The
following keywords and subject headings were used: “heart surgery” OR
“CABG” OR “surgery” AND “clinical outcomes” OR “patient-reported
outcomes” OR “adverse outcomes” OR “complications” OR
“postoperative complications” OR “intraoperative” AND “nasogastric
tube” AND “nausea” OR “postoperative nausea” OR “nausea and
vomiting” OR “postoperative nausea and vomiting” OR “pneumonia” OR
“anesthesia” OR “feeding” OR “feeding apparatus” OR
“decompression” in Embase, “cardiac surgery” OR “heart surgery” OR
“CABG” OR “surgery” AND “outcomes” OR “complications” OR
“postoperative” OR “intraoperative” AND “nasogastric tube” AND
“nausea” OR “vomiting” OR “pneumonia” OR “anesthesia” OR
“feeding” OR “decompression” in Cochrane Library, and [(“Thoracic
surgery” OR “Coronary Artery Bypass” OR “General surgery” OR
“Outcome Assessment, Health Care” OR “postoperative complications”
OR “intraoperative complications”) AND (“nausea” OR “postoperative
nausea and vomiting” OR “pneumonia” OR “anesthesia” OR
“decompression”)] AND (“nasogastric tube” OR “intubation,
Gastrointestinal”) in Medline.