7 doctors weighed in:
Y the pts with COPD hav dysnoea in early morning?
7 doctors weighed in

Dr. Frank Mayo
Internal Medicine - Pulmonary Critical Care
5 doctors agree
In brief: Position/therapy/
Supine position in COPD aggravates airway diameter as a consequence of gravity.
Thus a narrowed airway is more narrow when supine. It is why COPD pts often sleep in a chair.Also most pts are at the nadir of therapeutic therapy effects in early morning ie they have little active medicine on board. Also circulating steroids are lower in early am thus providing less anti-inflammatory mechanisms.

In brief: Position/therapy/
Supine position in COPD aggravates airway diameter as a consequence of gravity.
Thus a narrowed airway is more narrow when supine. It is why COPD pts often sleep in a chair.Also most pts are at the nadir of therapeutic therapy effects in early morning ie they have little active medicine on board. Also circulating steroids are lower in early am thus providing less anti-inflammatory mechanisms.
Dr. Frank Mayo
Dr. Frank Mayo
Thank
Dr. MOHAMMAD ZAMAN
Internal Medicine - Pulmonary Critical Care
1 doctor agrees
In brief: Airflow is lowest at
There is normal diurnal variation in airflow in all human beings, the peak airflow is lowest at around 4 am .
This happens in people without any COPD as well. As the flow is limited in patient's with copd, there are symptomatic when the flow rate falls below a critical level. To avoid this problem, patient's with COPD should. Use a long acting bronchodilator at bed time.

In brief: Airflow is lowest at
There is normal diurnal variation in airflow in all human beings, the peak airflow is lowest at around 4 am .
This happens in people without any COPD as well. As the flow is limited in patient's with copd, there are symptomatic when the flow rate falls below a critical level. To avoid this problem, patient's with COPD should. Use a long acting bronchodilator at bed time.
Dr. MOHAMMAD ZAMAN
Dr. MOHAMMAD ZAMAN
Thank
Get help from a real doctor now
Dr. William Forsythe
Board Certified, Emergency Medicine
23 years in practice
171K people helped
Continue
107,000 doctors available
Read more answers from doctors