dilatation

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Both improvement in nutritional status and sustained oesophageal patency should be the reference points to a successful dilatation.
改善营养状况并进行持续的食道扩张应是扩张术成功的关键所在。
The majority of oesophageal caustic strictures in children are observed late, when dilatation procedures are likely to be more difficult and carry a significantly higher recurrence rate.
大多数儿童食道腐蚀性狭窄发现较晚，此时进行扩张手术可能较为困难，而且复发率大大提高。
Incompetent cervix is characterized by dilatation of the cervix without cramps.
宫颈管机能不全的特征是宫颈扩张但无腹痛。
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For my purposes, I would most likely consider DF-4 in a patient with the combination of being thin (to minimize pocket bulk), elderly or inactive (less likely to have lead fracture), without pacing indications (unlikely to need device downgrade in future), and without marked LV dilatation or very low EF (less likely to have high DFT or pacing threshold problems).
FORBES: New ICD Lead Technology Creates New Set of Problems: A Perspective From One Electrophysiologist

the process of becoming wider or more open, or the act of making something do this