"Directions Helpdesk"

I wonder, Looking up at The drip drop drip Of two bags full Into my vein (Gemcitabine and Carboplatin Under their dark brown cover) I wonder, How do they know where to go? Perhaps there is a "Directions Helpdesk" In the Arrivals Hall in my arm. If so, perhaps they can offer A Sat Nav? GPS? A Garmin App? Google Maps? Or a postal code? Have they packed a lunch? An overnight bag? A torch, in case the cancer Tries to hide? I am not a scientist in such matters, And so I wonder, Trusting them, Those drip drop drips, Dripdropping their way Into me, And trusting too That "Directions Helpdesk", As I can't accompany them On their journey. And I do, As I trust those who work On this amazing corridor Of the Oncology Day Ward As we all do. We trust them - And the "Directions Helpdesk".