There are two known types of atelectasis. The first type is called acute atelectasis which usually results from surgery involving the opening of the chest cavity or the abdominal area. This type of atelectasis may also result from physical trauma to the lungs like during car accidents or stabbing incidents.
Location: Egypt. Posts: 1,672. Re: How long for meds to take effect. It takes from 1 to 2 days in order for your high bp meds to work, but it reach its maximum effect in 1 week and some times it takes 2 weeks. They said that but I think it's only a week, not more than that.
To reach max blood pressure benifits clonidine takes 14 -20 days to work so unless you have a native blood pressure that is very low you should have no issues using it for a short period of time. Read More. The clonidine usually starts to work in 20-40 minutes. Peak levels in the blood are at about 4 hrs.