See the DrugPatentWatch profile for ropivacaine
Pfizer ropivacaine hydrochloride is a local anesthetic used to provide surgical anesthesia and acute pain management [1][2]. It is a sterile, non-pyrogenic solution available in various concentrations and volumes [2].
How does ropivacaine work?
Ropivacaine hydrochloride is a voltage-gated sodium channel blocker [3]. By reversibly blocking nerve impulse conduction, it prevents the transmission of pain signals from the site of administration to the central nervous system [3]. It is less lipid-soluble and has a lower potential for central nervous system and cardiovascular toxicity compared to bupivacaine [4].
What is ropivacaine hydrochloride used for?
Ropivacaine hydrochloride is indicated for local or regional anesthesia, including [2]:
* Epidural block for surgery and obstetrics
* Peripheral nerve block for surgery
* Infiltration anesthesia
What are the available strengths and formulations?
Ropivacaine hydrochloride is available in several concentrations, typically ranging from 0.2% to 1% [2]. It comes in single-dose vials and pre-filled syringes [2]. Specific formulations may include additives like epinephrine to prolong the duration of anesthesia [2].
Who manufactures ropivacaine hydrochloride?
Pfizer is a manufacturer of ropivacaine hydrochloride [1]. Other manufacturers also produce the drug, and it is available under various brand names and as a generic medication [5].
What are the side effects of ropivacaine hydrochloride?
Common side effects reported with ropivacaine hydrochloride include nausea, vomiting, dizziness, headache, and bradycardia [4][6]. Serious adverse events, though rare, can include central nervous system (CNS) toxicity (e.g., seizures, circumoral numbness, dizziness) and cardiovascular toxicity (e.g., hypotension, arrhythmias, cardiac arrest) [4][6].
How does ropivacaine compare to other local anesthetics?
Ropivacaine is an amide-type local anesthetic, similar to lidocaine and bupivacaine [4]. Compared to bupivacaine, ropivacaine exhibits a lower lipophilicity and protein binding, which is associated with a reduced risk of systemic toxicity, particularly CNS and cardiovascular effects [4]. Lidocaine, another common local anesthetic, has a faster onset and shorter duration of action than ropivacaine [4].
What is the typical onset and duration of action?
The onset and duration of action for ropivacaine hydrochloride depend on the concentration used, the dose administered, the site of injection, and the type of block [3]. Higher concentrations and doses generally result in a faster onset and longer duration of anesthesia and analgesia [3]. For example, in epidural anesthesia for surgery, onset can be within minutes, with a duration of several hours [3].
What is the mechanism of toxicity for ropivacaine?
Toxicity from ropivacaine hydrochloride, like other local anesthetics, occurs when the concentration in the blood reaches toxic levels, affecting the central nervous system and cardiovascular system [4]. Symptoms of CNS toxicity can range from mild effects like tinnitus and metallic taste to severe effects like seizures and coma [4]. Cardiovascular toxicity can manifest as myocardial depression, arrhythmias, and cardiovascular collapse [4].
What are the contraindications for using ropivacaine hydrochloride?
Ropivacaine hydrochloride is contraindicated in patients with known hypersensitivity to the drug or other amide-type local anesthetics [2]. It should also be used with extreme caution or avoided in patients with severe hepatic impairment, severe heart failure, or severe electrolyte imbalances [2].
How is ropivacaine hydrochloride administered?
Administration of ropivacaine hydrochloride is performed by trained medical professionals via injection at the desired site for local or regional anesthesia [2]. This can include epidural spaces, peripheral nerve sheaths, or local tissue infiltration [2].
What regulatory approvals does ropivacaine hydrochloride have?
Ropivacaine hydrochloride has received approval from regulatory agencies like the U.S. Food and Drug Administration (FDA) for its indicated uses [1].
Are there any known drug interactions with ropivacaine hydrochloride?
Caution should be exercised when co-administering ropivacaine hydrochloride with other local anesthetics, as the toxic effects are additive [2]. Concomitant use of drugs that prolong the QT interval may increase the risk of ventricular arrhythmias [2]. Other drugs affecting cardiac conduction or metabolism may also interact [2].
What are the storage requirements for ropivacaine hydrochloride?
Ropivacaine hydrochloride solutions should be stored at controlled room temperature (20°C to 25°C or 68°F to 77°F) and protected from light [2]. They should not be refrigerated or frozen [2].
Sources:
[1] https://www.pfizer.com/products/product-detail/roxipiprazole
[2] https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=1029b09d-b984-46e8-9e46-515161a661c7
[3] https://www.ncbi.nlm.nih.gov/books/NBK538187/
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4803147/
[5] https://www.ncbi.nlm.nih.gov/books/NBK519439/
[6] https://www.drugs.com/sfx/ropivacaine-injection-side-effects.html