Fluoroquinolone Antibiotics Classification, Uses and Side

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Fluoroquinolone Antibiotics Classification, Uses and Side

Beitragvon Admin » 6. Aug 2016 12:41

Chronic Bronchitis Meds - Fluoroquinolone Antibiotics Classification, Uses and Side Effects

The fluoroquinolones are a relatively new group of antibiotics. Fluoroquinolones were first introduced in 1986, but they are really modified quinolones, a class of antibiotics, whose accidental discovery occurred in the early 1960.

Classification of Fluoroquinolones As a group, the fluoroquinolones have excellent in vitro activity against a wide range of both gram-positive and gram-negative bacteria. The newest fluoroquinolones have enhanced activity against gram-positive bacteria with only a minimal decrease in activity against gram-negative bacteria. Their expanded gram-positive activity is especially important because it includes significant activity against Streptococcus pneumoniae.

All of the fluoroquinolones are effective in treating urinary tract infections caused by susceptible organisms. They are the first-line treatment of acute uncomplicated cystitis in patients who cannot tolerate sulfonamides or TMP, who live in geographic areas with known resistance > 10% to 20% to TMP-SMX, or who have risk factors for such resistance. Having a penchant for Bronchitis led us to write all that there has been written on Bronchitis here. Hope you too develop a penchant for Bronchitis!

Third Generation

The third-generation fluoroquinolones are separated into a third class because of their expanded activity against gram-positive organisms, particularly penicillin-sensitive and penicillin-resistant S. pneumoniae, and atypical pathogens such as Mycoplasma pneumoniae and Chlamydia pneumoniae. Although the third-generation agents retain broad gram-negative coverage, they are less active than ciprofloxacin against Pseudomonas species. There has been an uncalculatable amount of information added in this composition on Chronic Bronchitis. Don't try counting it!

Fluoroquinolones Advantages:

Ease of administration Daily or twice daily dosing Excellent oral absorption Excellent tissue penetration Prolonged half-lives Significant entry into phagocytic cells Efficacy Overall safety We would like you to leisurely go through this article on Chronic Bronchitis to get the real impact of the article. Chronic Bronchitis is a topic that has to be read clearly to be understood.

Fluoroquinolones disadvantages: Tendonitis or tendon rupture Multiple drug interactions Not used in children Newer quinolones produce additional toxicities to the heart that were not found with the older agents There is a lot of jargon connected with Bronchitis. However, we have eliminated the difficult ones, and only used the ones understood by everyone.

Antibiotics for Atypical Infections (Antibiotics - Lecture 7)

A lecture on the antibiotics used for treating infections caused be atypical bacteria - specifically Mycoplasma, Chlamydia, Chlamydophila, Rickettsia, and ...


Conditions treated with Fluoroquinolones: indications and uses The newer fluoroquinolones have a wider clinical use and a broader spectrum of antibacterial activity including gram-positive and gram-negative aerobic and anaerobic organisms. Some of the newer fluoroquinolones have an important role in the treatment of community-acquired pneumonia and intra-abdominal infections. The serum elimination half-life of the fluoroquinolones range from 3 -20 hours, allowing for once or twice daily dosing. Don't be surprised if you find anything unusual here about Bronchitis. There has been some interesting and unusual things here worth reading. :idea:

Side Effects

The fluoroquinolones as a class are generally well tolerated. Most adverse effects are mild in severity, self-limited, and rarely result in treatment discontinuation. However, they can have serious adverse effects.

Because of concern about hepatotoxicity, trovafloxacin therapy should be reserved for life- or limb-threatening infections requiring inpatient treatment (hospital or long-term care facility), and the drug should be taken for no longer than 14 days.

Fourth Generation

The fourth-generation fluoroquinolones add significant antimicrobial activity against anaerobes while maintaining the gram-positive and gram-negative activity of the third-generation drugs. They also retain activity against Pseudomonas species comparable to that of ciprofloxacin. The fourth-generation fluoroquinolones include trovafloxacin (Trovan). :D.

Because of their expanded antimicrobial spectrum, third-generation fluoroquinolones are useful in the treatment of community-acquired pneumonia, acute sinusitis and acute exacerbations of chronic bronchitis, which are their primary FDA-labeled indications. The third-generation fluoroquinolones include levofloxacin, gatifloxacin, moxifloxacin and sparfloxacin. Sometimes, what we hear about Chronic Bronchitis can prove to be rather hilarious and illogical. This is why we have introduced this side of Chronic Bronchitis to you.

Second-generation agents include ciprofloxacin, enoxacin, lomefloxacin, norfloxacin and ofloxacin. Ciprofloxacin is the most potent fluoroquinolone against P. aeruginosa. Ciprofloxacin and ofloxacin are the most widely used second-generation quinolones because of their availability in oral and intravenous formulations and their broad set of FDA-labeled indications.

Urinary tract infections (norfloxacin, lomefloxacin, enoxacin, ofloxacin, ciprofloxacin, levofloxacin, gatifloxacin, trovafloxacin) Lower respiratory tract infections (lomefloxacin, ofloxacin, ciprofloxacin, trovafloxacin) Skin and skin-structure infections (ofloxacin, ciprofloxacin, levofloxacin, trovafloxacin) Urethral and cervical gonococcal infections (norfloxacin, enoxacin, ofloxacin, ciprofloxacin, gatifloxacin, trovafloxacin) Prostatitis (norfloxacin, ofloxacin, trovafloxacin) Acute sinusitis (ciprofloxacin, levofloxacin, gatifloxacin, moxifloxacin (Avelox), trovafloxacin) Acute exacerbations of chronic bronchitis (levofloxacin, sparfloxacin (Zagam), gatifloxacin, moxifloxacin, trovafloxacin) Community-acquired pneumonia (levofloxacin, sparfloxacin, gatifloxacin, moxifloxacin, trovafloxacin)

First Generation

The first-generation agents include cinoxacin and nalidixic acid, which are the oldest and least often used quinolones. These drugs had poor systemic distribution and limited activity and were used primarily for gram-negative urinary tract infections. Cinoxacin and nalidixic acid require more frequent dosing than the newer quinolones, and they are more susceptible to the development of bacterial resistance. We have written a humorous anecdote on Chronic Bronchitis to make it's reading more enjoyable and interesting to you. This way you learn there is a funny side to Chronic Bronchitis too! :shock:

Second Generation

The second-generation fluoroquinolones have increased gram-negative activity, as well as some gram-positive and atypical pathogen coverage. Compared with first-generation quinolones, these drugs have broader clinical applications in the treatment of complicated urinary tract infections and pyelonephritis, sexually transmitted diseases, selected pneumonias and skin infections. We have included the history of Bronchitis here so that you will learn more about its history. It is only through it's history can you learn more about Bronchitis.
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