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.
Best Answer: It could take up to a week to start seeing lowering of the blood pressure. However, hydrochlorothiazide (HCTZ) starts working (causing increased urination) on the first day you take it. After taking a dose, it can take 30-60 minutes for the drug to get to the site of action (kidney) and start drawing the fluid off.