For nasal intubation, what mark should be expected at the patient's nare?

The expected mark for nasal intubation at the patient's nare typically falls within the range of 26 to 29 cm. This measurement is essential as it allows the clinician to ascertain the appropriate depth of the tube placement to ensure proper ventilation while minimizing trauma to the nasal passages.

When performing nasal intubation, correctly estimating the depth is crucial because it affects the airway's patency and the overall effectiveness of the ventilation. Measuring from the nare to the earlobe or the sternal notch helps establish a reliable depth at which the endotracheal tube should be positioned after passing through the nasal cavity and into the trachea.

The other provided ranges do not align with the standard practices for nasal intubation. Proper training and knowledge are vital to ensure patient safety and to optimize the effectiveness of the procedure.