Giving IVTT meds at once and pt on morphine prec recieving trama

Hello to everybody here! I have a question about giving IVTT meds given on same schedule. I am just starting with my Nursing career. Started just last month. Currently assigned as OB Nurse. Sometimes I am assigned to post CS ward in which commonly my pts are ordered with IVTT meds givin on same schedule:

Ampicillin and Ranitidine
Gentamicin and Metronidazole
Ketorolac and Tramadol
(sometimes ampi+rani+keto and trama).

My question is, is there no adverse effects or S/Sx I should closely watch in giving the above said meds on same schedule? Also, is there some special precaution i should observe in giving Trama to patient who's on morphine prec? What are the possible s/sx i should be alarmed ? Most of them are asleep or appears weak post op and i would hardly tell if theyre still trying to recuperate post op or if its something i should be alarmed in relation to the meds administered.My monitoring tool is limited only to BP and temp monitoring. We dont have O2 sat monitoring in our ward.

Insights and informations are highly appreciated! Thank you.