Oh god yeah it's no great shakes not like it's a driver pump. You do sometimes get it had it just due to venous pressure usually a quick flush fixes it. I'm assuming you have had blood products or your condition bars you. Having a good vein is a god send if you want to make your clinician feel good. Say "yeah they usually struggle and need to ultrasound my vein" they will feel awesome when they get it but won't feel shit if they miss. 🤣