Q. What does he (a patient hospitalized) do (in regards to tefilos, sh’ma and Torah learning) when he is wearing a catheter attached to a urine bag?

A. In regards to a patient whose urine is drained via a catheter, many Poiskim are lenient and permit prayers, even if he constantly flows (see question above, when he is not using a catheter) and the tube and urine receptacle are covered. (Igrois Moishe O.H. 1: 27). The reason for the leniency is that he may not feel when the urine drains (Tzits Eliezer 8: 1) or since it drains in an unnatural way it is not considered a normal urine discharge (Horav Chenkin Zt”l quoted in Mishne Halochois 2: 65, Even Yisroel 80, see also Nishmas Avrohom 1: 76: 9 et. al.)

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a