English to Spanish Medical Medical (general) gastroenterology

Sobre la colocación de una sonda nasogástrica:
" Position the tube (typically a 16-
or 18-Fr sump) so that the insertion distance can be estimated,
and mark the distance with tape or by noting the markers
printed on the proximal end of the tube. A simple method is
to measure the tube from the xiphoid to the earlobe and then
to the tip of the nose"

Gracias