Study NGT gp Non NGT gp P value Observations
Lavi et al. 2011 (202 patients) Vomiting: 10% Vomiting: 24% p = 0.007 NG tube use during cardiac surgery may reduce the incidence of postoperative vomiting.
Hirasaki et al. 2005 (114 patients) Nausea: 32%, Vomiting: 15% Nausea: 34% Vomiting: 19% NS (assigned as p < 0.05) The placement of NGT did not impact PONV incidence or antiemetic requirements after cardiac surgery.
Burlacu et al. 2005 (104 patients)
Nausea 25.0% Retching 11.5% Nausea 32.7% Retching 13.4% Nausea P = 0.6 Retching P = 0.7
NGT during coronary revascularization surgery, until tracheal extubation, did not reduce the incidence and severity of nausea or the incidence of vomiting or retching in these patients.