AA is generally the abbreviation for Associate of Arts degree. This is the degree given by many two-year colleges, often called Community Colleges (which used to be called Junior Colleges). Some also award the AS-- Associate in Science degree. Typically, an Associate's degree is the equivalent of a year, or in some cases a year and a half, of courses at a four-year college, and there are many students who transfer their Associate's degree credits so that they can complete a four-year degree.
Although it may seem difficult, lowering your breathing speed will help to lower your heart rate. Take a breath for 5-8 seconds, hold it for 3-5 seconds, and then exhale slowly for a count of 5-8 seconds.
Onset of Action. Heart rate control: Oral: 1 to 2 hours; IV: 5 to 60 minutes. Peak effect: Heart rate control: Oral: 2 to 8 hours; IV: 1 to 6 hours; Note: In patients with atrial fibrillation, median time to ventricular rate control in one study was 6 hours (range: 3 to 15 hours) (Siu, 2009)