Hevicain Spinal Tung (Bupivacaine Hydrochloride)

Hevicain Spinal Tung is used by anesthesiologists to achieve regional spinal anesthesia and to support pain management in a variety of surgical and diagnostic procedures.

• Spinal anesthesia for lower abdominal, pelvic, and lower‑limb surgeries.
• Surgical anesthesia during cesarean sections and orthopedic procedures.
• Adjunctive analgesia for postoperative pain management.
• Intrathecal administration for diagnostic or therapeutic nerve blocks.
• Management of acute pain in trauma or emergency settings.
• Muscle relaxation facilitation during urological or gynecologic procedures.
• Use as part of combined spinal‑epidural techniques for obstetric labor analgesia.

• Bupivacaine hydrochloride acts as an amide‑type local anesthetic. After intrathecal injection it penetrates neuronal membranes and binds reversibly to the intracellular portion of voltage‑gated sodium channels. This binding stabilizes the channel in its inactivated state, preventing sodium influx during depolarization, thereby blocking the generation and propagation of nerve impulses. The result is a reversible loss of sensation and motor function in the spinal segments supplied.

Adverse reactions to Hevicain Spinal Tung may vary in frequency and severity.

Common

• Transient hypotension or mild blood pressure drop.
• Bradycardia or slowed heart rate.
• Nausea, vomiting, or metallic taste.
• Pruritus or mild itching at the injection site.

Serious

• Cardiac arrhythmias or conduction disturbances.
• Convulsions or seizures.
• Respiratory depression or apnea.
• High spinal block leading to severe motor weakness.

When using Hevicain Spinal Tung, clinicians should observe several precautions to minimize risk.

• Assess cardiovascular status; avoid use in patients with severe hypotension.
• Evaluate for known hypersensitivity to bupivacaine or amide anesthetics.
• Use caution in pregnant patients; limited safety data are available.
• Monitor neurological function for signs of high spinal or neurotoxicity.
• Adjust dose in elderly or patients with hepatic impairment.
• Ensure appropriate resuscitation equipment is immediately available.
• Avoid concurrent use of other potent local anesthetics to prevent additive toxicity.

Hevicain Spinal Tung can interact with other agents, affecting its safety and efficacy.

Avoid

• Concurrent administration of other long‑acting local anesthetics (e.g., ropivacaine, lidocaine) due to additive toxicity.
• Systemic vasodilators (e.g., nitroglycerin) that may exacerbate hypotension.
• Beta‑blockers that can mask tachycardia from spinal‑induced sympathetic block.
• Drugs that lower seizure threshold (e.g., tramadol, certain antibiotics).

Use with caution

• General anesthetics that depress respiration (e.g., propofol, volatile agents).
• Opioids administered intrathecally, which may increase risk of respiratory depression.
• Anticoagulants, as spinal puncture may raise bleeding risk.
• Diuretics, which can augment hypotensive effects.