what was the number of times that patient 17462 received .9% normal saline during this hospital visit?
select count(*) from inputevents_cv where inputevents_cv.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 17462 and admissions.dischtime is null ) ) and inputevents_cv.itemid in ( select d_items.itemid from d_items where d_items.label = '.9% normal saline' and d_items.linksto = 'inputevents_cv' )