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.
Histamine encourages acid secretion in the stomach. H2 blockers are available over the counter and relieve symptoms in about half of GERD patients. It takes 30 - 90 minutes for them to work, but the benefits last for hours. People usually take the drugs at bedtime.