Conclusion
EM tracing warned of lung misplacement before trauma occurred in addition to accurately confirming gastric placement in all patients when compared with plain X-ray. Conversely, pH confirmation failed in nearly half of patients and subsequent X-ray delayed feeding and medicines by 2 hours compared with EM tracing. Cortrak/ Corflo polyurethane tubes appear adequately radio-opaque for X-ray confirmation and a 12 French tube permits GRV checks. Systematic criteria for gastric confirmation by EM trace are proposed. These should be tested and re-evaluated in future studies.