I'm so sorry to hear that your wife is experiencing so much nausea. As you posted this message on Tuesday, I'm hoping perhaps that she has seen her oncologist since then and discussed her recurrent nausea and found some relief.
In looking over your message and thinking about a few things, the first question I had is concerning the medications that she takes for her nausea before chemotherapy, the day of chemotherapy, and for the days following her infusion.
One of the medications she is receiving, Cisplatin, is referred to as a "highly emetogenic" agent, or in layman's terms, it causes severe nausea. There are clear guidelines on the management of chemotherapy induced nausea and vomiting for medications such as Cisplatin, and it wouldn't hurt to ask if your wife is receiving the medications as recommended.
If we were to look at days 1-4 of chemotherapy, she should be receiving medication like Emend (Aprepitant), Zofran, Dexamethasone, etc. The Emend is a pill and should be taken before chemotherapy and then orally on day 2 and 3 along with Decadron (Dexamethasone) i.v. or by mouth on days 2, 3, and 4.
The guidelines are actually quite lengthy, so I only included the first top section of the National Comprehensive Cancer Network (NCCN) antiemesis guidelines from 2017.
For the professional guidelines an account is needed, but is free to set up.
https://www.nccn.org/patients/resources … ausea.aspx
There may be other reasons for her persistent nausea as well including the effects of the tumor. Here is a great resource for you to look through from the National Cancer Institute on nausea and vomiting in cancer.
This can be an issue that will require a lot of trial and error, changing of medications, working to find foods/beverages that are easily digested, etc. I have also seen some good success with the use of peppermint oil on a cotton ball in a little dish, and having an individual gently inhale the aroma of this. Yes I know it sounds silly, but I have seen it work for some individuals who were struggling with ongoing nausea due to liver, colon, and endometrial cancers...or cancers that are prone to causing nausea.
It is low-tech, but worth a try but do always ask her oncologist or oncology nurse before trying anything new, and do not use this if your wife as an allergy to peppermint.
Does the facility where your wife is being treated have palliative care physicians on staff? If so, it might be a good idea to see if someone from their service could be a consult and work with the oncologist to treat her nausea.
Palliative care specialists are not hospice doctors, but practitioners who specialize in symptom management on a short term or long term basis. This physician team (Oncologist/Palliative care physician) could work together to trial different medications, or work with a nutritionist, manage pain medications, constipation, etc. They work wonders and are a great asset when struggling with persistent and distressing symptoms.
Lou, I will be thinking of the both of you and keeping good thoughts and hope for relief of the nausea. Please let us know how you are both doing.
THIS INFORMATION IS NOT INTENDED NOR IMPLIED TO BE A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE. YOU SHOULD ALWAYS SEEK THE ADVICE OF YOUR PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROVIDER