Study 2 compared 3 doses of BOTOX with placebo and included 91 patients [BOTOX 360 Units (N=21), BOTOX 180 Units (N=23), BOTOX 90 Units (N=21), and placebo (N=26)] with upper limb spasticity (expanded Ashworth score of at least 2 for elbow flexor tone and at least 3 for wrist flexor tone) who were at least 6 weeks post-stroke. BOTOX and placebo were injected with EMG guidance into the flexor digitorum profundus, flexor digitorum sublimis, flexor carpi radialis, flexor carpi ulnaris, and bic eps brachii (see Table 27).
Formation of neutralizing antibodies to botulinum toxin type A may reduce the effectiveness of BOTOX treatment by inactivating the biological activity of the toxin. The critical factors for neutralizing antibody formation have not been well characterized. The results from some studies suggest that BOTOX injections at more frequent intervals or at higher doses may lead to greater incidence of antibody formation. The potential for antibody formation may be minimized by injecting with the lowest effective dose given at the longest feasible intervals between injections.
Treatment with BOTOX and other botulinum toxin products can result in swallowing or breathing difficulties. Patients with preexisting swallowing or breathing difficulties may be more susceptible to these complications. In most cases, this is a conseq uence of weakening of muscles in the area of injection that are involved in breathing or oropharyngeal muscles that control swallowing or breathing [see Spread Of Toxin Effect].
Jump up ^ Arnon SS, Schechter R, Inglesby TV, Henderson DA, Bartlett JG, Ascher MS, Eitzen E, Fine AD, Hauer J, Layton M, Lillibridge S, Osterholm MT, O'Toole T, Parker G, Perl TM, Russell PK, Swerdlow DL, Tonat K (February 2001). "Botulinum toxin as a biological weapon: medical and public health management". JAMA. 285 (8): 1059–70. doi:10.1001/jama.285.8.1059. PMID 11209178.
No definitive serious adverse event reports of distant spread of toxin effect associated with dermatologic use of BOTOX® Cosmetic at the labeled dose of 20 Units (for glabellar lines), 24 Units (for lateral canthal lines), 40 Units (for forehead lines with glabellar lines), 44 Units (for simultaneous treatment of lateral canthal lines and glabellar lines), and 64 Units (for simultaneous treatment of lateral canthal lines, glabellar lines, and forehead lines) have been reported.
Botulinum toxin is used to treat certain eye disorders such as crossed eyes (strabismus) and uncontrolled blinking (blepharospasm), to treat muscle stiffness/spasms or movement disorders (such as cervical dystonia, torticollis), and to reduce the cosmetic appearance of wrinkles. It is also used to prevent headaches in people with very frequent migraines. Botulinum toxin relaxes muscle by blocking the release of a chemical called acetylcholine.
BOTOX increases the incidence of urinary tract infection [see ADVERSE REACTIONS]. Clinical trials for overactive bladder excluded patients with more than 2 UTIs in the past 6 months and those taking antibiotics chronically due to recurrent UTIs. Use of BOTOX for the treatment of overactive bladder in such patients and in patients with multiple recurrent UTIs during t reatment should only be considered when the benefit is likely to outweigh the potential risk.
In 2016, the stock price of Tobira Pharmaceuticals stumbled on the release of the top-line data of the Phase 2b CENTAUR study of CVC therapy in NASH because the clinical trial missed its primary clinical outcome of improvement in NASH resolution without worsening of liver fibrosis. However, CVC therapy achieved its secondary clinical outcome of improvement in liver fibrosis without worsening of NASH resolution. The clinical efficacy of CVC on NASH liver fibrosis is currently being further researched in the ongoing Phase 3 AURORA clinical trial.
Another factor to consider, more high volume practices have more patient incentives from Allergan and the other manufacturers. My patient's receive rebates from the company, instant savings at the checkout, and regular reminders about upcoming treatments and specials that are sponsored by Allergan. This program is only available to the nation's busiest, most successful practices.
The correct way to inject Botox is to always customize the treatment plan to solve the aesthetic issues that bother the person. Some patients need only limited areas injected such as the vertical lines between their brows, their “crow’s feet” at the outer aspects of their eyelids, the “bunny” lines that radiate on the sides of their nose, vertical and horizontal lip lines and rarely patients request a correction of their “gummy” smile where their upper gums show when a person smile. Yes, you usually can pay for specific areas of treatment or by the number of units injected. But if you only want single line or area of your forehead injected you may not be satisfied with the results in the end. Why? -because when Botox or Dysport is injected it will weaken only the muscles that are treated, there may be muscles that were not treated that are pulling in an opposite direction that will produce undesirable results(an example of an undesirable effect occurs when treating just the glabella “11” lines between your eyebrows that may produce an overarched brow contour that resembles Mr. Spock.) Therefore, a complete treatment plan that includes all muscle groups should be treated to balance the pull and counter-pull of facial muscles.In addition, injections around the mouth must be performed by an experienced injector because there is the potential for the mouth to droop afterwards which can cause you to drool or may impact your ability to eat, pucker and smile. These adverse effect may last several weeks.
The ideal needle to use is a 30G or 31G, half-inch needle. Longer needles are problematic as they encourage deeper injections, which can increase the risk of muscle weakness, and most of the side effects such as neck pain stem from muscle weakness. Perseverative-free normal saline is the only diluent that should be used. There is a case study of a patient who died when onabotulinumtoxinA was mixed with a local anesthetic agent. The pivotal trial established an effective dose using 2 mL/100 units of onabotulinumtoxinA. A fact that is often overlooked is that the mean dose in the trial was 165 units. The patients all received 155 units with a fixed dose, fixed-site injection protocol, and an option of an additional 40 units to follow the pain. This resulted in a mean dose of 165 units, which is the standard that should be used to achieve the efficacy results reviewed above.
Exploratory analyses of this study suggested that the majority of patients who had shown a beneficial response by week 6 had returned to their baseline status by 3 months after treatment. Exploratory analyses of subsets by patient sex and age suggest that both sexes receive benefit, although female patients may receive somewhat greater amounts than male patients. There is a consistent trea tmentassociated effect between subsets greater than and less than age 65. There were too few non-Caucasian patients enrolled to draw any conclusions regarding relative efficacy in racial subsets.
In clinical trials, 30.6% of patients (33/108) who were not using clean intermittent catheterization (CIC) prior to injection, required catheterization for urinary retention following treatment with BOTOX® 200 Units as compared to 6.7% of patients (7/104) treated with placebo. The median duration of post-injection catheterization for these patients treated with BOTOX® 200 Units (n = 33) was 289 days (minimum 1 day to maximum 530 days) as compared to a median duration of 358 days (minimum 2 days to maximum 379 days) for patients receiving placebo (n = 7).