Brief Answer:
You can take local nasal decongestant under supervision

Detailed Answer:
Hi Sir,

I have gone through your query and understand the concerns. In this context I feel you can consider local nasal decongestant such as Xylometazoline or oxymetazoline nasal drops two drops three times a day for five days under the supervision of your doctor. Local medication have much less side effect and very minimal systemic effects. I am sure these won't alter your blood pressures significantly.

Alternatively you should also consider steam inhalation and hypotonic Nasowash nasal wash if you have crusting or nasal discharge.

Regards
Dr Hariom Sharma

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