プログレッシブ和英中辞典(第4版)の解説
つききり【付き切り】
その患者には2人の看護師が付ききりだった
The patient had two nurses attending him all the time.
患者に付ききりで
((be)) constantly at a patient's side/((be)) in constant attendance on [upon] a patient
私は弟に付ききりで宿題を手伝った
I stayed with my brother the whole time helping him with his homework.