My 76 y/o husband is post-op day 8 double bypass surgery (at home now). He continues to wheeze, especially at night when it keeps him awake and he has to sleep in a recliner chair. Is this typical for OH surgery recovery? He has no visible signs of fluid retention--no swelling, etc. Meds. are lisinopril, amiodarone, zocor, toprol, aspirin. Thank you.