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Look Up > Drugs > Ketorolac Tromethamine
Ketorolac Tromethamine
Pronunciation
U.S. Brand Names
Generic Available
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Drug Interactions
Stability
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Dietary Considerations
Monitoring Parameters
Reference Range
Test Interactions
Mental Health: Effects on Mental Status
Mental Health: Effects on Psychiatric Treatment
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms
References

Pronunciation
(KEE toe role ak troe METH a meen)

U.S. Brand Names
Acular® Ophthalmic; Toradol® Injection; Toradol® Oral

Generic Available

No


Pharmacological Index

Nonsteroidal Anti-Inflammatory Agent (NSAID)


Use

Dental: Short-term (<5 days) management of pain

Medical: Short-term (<5 days) management of pain; first parenteral NSAID for analgesia; 30 mg provides the analgesia comparable to 12 mg of morphine or 100 mg of meperidine


Pregnancy Risk Factor

B/D (3rd trimester)


Contraindications

In patients who have developed nasal polyps, angioedema, or bronchospastic reactions to other NSAIDs, active peptic ulcer disease, recent GI bleeding or perforation, patients with advanced renal disease or risk of renal failure, labor and delivery, nursing mothers, patients with hypersensitivity to ketorolac, aspirin, or other NSAIDs, prophylaxis before major surgery, suspected or confirmed cerebrovascular bleeding, hemorrhagic diathesis, concurrent ASA or other NSAIDs, epidural or intrathecal administration, concomitant probenecid


Warnings/Precautions

Use extra caution and reduce dosages in the elderly because it is cleared renally somewhat slower, and the elderly are also more sensitive to the renal effects of NSAIDs; use with caution in patients with congestive heart failure, hypertension, decreased renal or hepatic function, history of GI disease (bleeding or ulcers), or those receiving anticoagulants


Adverse Reactions

Percentage unknown: Renal impairment, wound bleeding (with I.M.), postoperative hematomas

1% to 10%:

Cardiovascular: Edema

Central nervous system: Drowsiness, dizziness, headache, pain

Gastrointestinal: Nausea, dyspepsia, diarrhea, gastric ulcers, indigestion

Local: Pain at injection site

Miscellaneous: Diaphoresis (increased)

<1%: Mental depression, purpura, aphthous stomatitis, rectal bleeding, peptic ulceration, change in vision, oliguria, dyspnea


Overdosage/Toxicology

Symptoms of overdose include diarrhea, pallor, vomiting, labored breathing, apnea, metabolic acidosis, leukocytosis, renal failure

Management of a nonsteroidal anti-inflammatory drug (NSAID) intoxication is primarily supportive and symptomatic. Fluid therapy is commonly effective in managing the hypotension that may occur following an acute NSAID overdose, except when this is due to an acute blood loss. Seizures tend to be very short-lived and often do not require drug treatment; although, recurrent seizures should be treated with I.V. diazepam. Since many of the NSAIDs undergo enterohepatic cycling, multiple doses of charcoal may be needed to reduce the potential for delayed toxicities; NSAIDs are highly bound to plasma proteins; therefore, hemodialysis and peritoneal dialysis are not useful.


Drug Interactions

Decreased effect of diuretics

Increased toxicity: Lithium, methotrexate increased drug level; increased effect/toxicity with salicylates, probenecid, anticoagulants


Stability

Ketorolac tromethamine injection should be stored at controlled room temperature and protected from light; injection is clear and has a slight yellow color; precipitation may occur at relatively low pH values

Compatible with NS, D5W, D5NS, LR

Incompatible with meperidine, morphine, promethazine, and hydroxyzine


Mechanism of Action

Inhibits prostaglandin synthesis by decreasing the activity of the enzyme, cyclo-oxygenase, which results in decreased formation of prostaglandin precursors


Pharmacodynamics/Kinetics

Analgesic effect:

Onset of action: I.M.: Within 10 minutes

Peak effect: Within 75-150 minutes

Duration of action: 6-8 hours

Absorption: Oral: Well absorbed

Time to peak serum concentration: I.M.: 30-60 minutes

Distribution: Crosses placenta; crosses into breast milk; poor penetration into CSF

Protein binding: 99%

Metabolism: In the liver

Half-life: 2-8 hours; increased 30% to 50% in elderly

Elimination: Renal excretion, 61% appearing in the urine as unchanged drug


Usual Dosage

Note: The use of ketorolac in children <16 years of age is outside of product labeling

Single-dose treatment:

I.M., I.V.: 0.4-1 mg/kg as a single dose; Note: Limited information exists. Single I.V. doses of 0.5 mg/kg, 0.75 mg/kg, 0.9 mg/kg and 1 mg/kg have been studied in children 2-16 years of age for postoperative analgesia. One study (Maunuksela, 1992) used a titrating dose starting with 0.2 mg/kg up to a total of 0.5 mg/kg (median dose required: 0.4 mg/kg).

Oral: One study used 1 mg/kg as a single dose for analgesia in 30 children (mean ± SD age: 3 ± 2.5 years) undergoing bilateral myringotomy

Multiple-dose treatment: I.M., I.V., Oral: No pediatric studies exist; one report (Buck, 1994) of the clinical experience with ketorolac in 112 children, 6 months to 19 years of age (mean: 9 years), described usual I.V. maintenance doses of 0.5 mg/kg every 6 hours (mean dose: 0.52 mg/kg; range: 0.17-1 mg/kg)

Adults (pain relief usually begins within 10 minutes with parenteral forms):

Oral: 10 mg every 4-6 hours as needed for a maximum of 40 mg/day; on day of transition from I.M. to oral: maximum oral dose: 40 mg (or 120 mg combined oral and I.M.); maximum 5 days administration

I.M.: Initial: 30-60 mg, then 15-30 mg every 6 hours as needed for up to 5 days maximum; maximum dose in the first 24 hours: 150 mg with 120 mg/24 hours for up to 5 days total

I.V.: Initial: 30 mg, then 15-30 mg every 6 hours as needed for up to 5 days maximum; maximum daily dose: 120 mg for up to 5 days total

Ophthalmic: Instill 1 drop in eye(s) 4 times/day for up to 7 days

Elderly >65 years: Renal insufficiency or weight <50 kg:

I.M.: 30 mg, then 15 mg every 6 hours

I.V.: 15 mg every 6 hours as needed for up to 5 days total; maximum daily dose: 60 mg


Dietary Considerations

Potassium: Hyperkalemia has been reported. The elderly and those with renal insufficiency are at greatest risk. Monitor potassium serum concentration in those at greatest risk. Avoid salt substitutes.

Sodium: Hyponatremia from sodium retention. Suspect secondary to suppression of renal prostaglandin. Monitor serum concentration and fluid status. May need to restrict fluid.


Monitoring Parameters

Monitor response (pain, range of motion, grip strength, mobility, ADL function), inflammation; observe for weight gain, edema; monitor renal function (serum creatinine, BUN, urine output); observe for bleeding, bruising; evaluate gastrointestinal effects (abdominal pain, bleeding, dyspepsia); mental confusion, disorientation, CBC, liver function tests


Reference Range

Serum concentration: Therapeutic: 0.3-5 mg/mL; Toxic: >5 mg/mL


Test Interactions

chloride (S), sodium (S), bleeding time


Mental Health: Effects on Mental Status

May cause drowsiness or dizziness; may rarely produce depression


Mental Health: Effects on Psychiatric Treatment

May decrease lithium clearance resulting in an increase in serum lithium levels and potential lithium toxicity; monitor serum lithium levels


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

NSAID formulations are known to reversibly decrease platelet aggregation via mechanisms different than observed with aspirin. The dentist should be aware of the potential of abnormal coagulation. Caution should also be exercised in the use of NSAIDs in patients already on anticoagulant therapy with drugs such as warfarin (Coumadin®).


Patient Information

If self-administered, use exactly as directed (do not increase dose or frequency); adverse reactions can occur with overuse. Do not take longer than 5 days without consulting medical advisor. Take with food or milk. While using this medication, do not use alcohol, other prescription or OTC medications including aspirin, aspirin-containing medications, or other NSAIDs without consulting prescriber. Maintain adequate hydration (2-3 L/day of fluids unless instructed to restrict fluid intake). You may experience nausea, vomiting, gastric discomfort (frequent mouth care, small frequent meals, chewing gum, or sucking lozenges may help). GI bleeding, ulceration, or perforation can occur with or without pain. Stop taking medication and report ringing in ears; persistent cramping or pain in stomach; unresolved nausea or vomiting; difficulty breathing or shortness of breath; unusual bruising or bleeding (mouth, urine, stool); skin rash; unusual swelling of extremities; chest pain; or palpitations. Pregnancy/breast-feeding precautions: Inform prescriber if you are or intend to be pregnant. Do not breast-feed.


Nursing Implications

Monitor for signs of pain relief, such as an increased appetite and activity


Dosage Forms

Injection: 15 mg/mL (1 mL); 30 mg/mL (1 mL, 2 mL)

Solution, ophthalmic: 0.5% (5 mL)

Tablet: 10 mg


References

Brooks PM and Day RO, "Nonsteroidal Anti-inflammatory Drugs - Differences and Similarities," N Engl J Med, 1991, 324(24):1716-25.

Brown CR, Moodie JE, Evans SE, et al, "Efficacy of Intramuscular (I.M.) Ketorolac and Meperidine in Pain Following Major Oral Surgery," Clin Pharmacol Ther, 1988, 43:161 (abstract).

Buck ML, "Clinical Experience With Ketorolac in Children," Ann Pharmacother, 1994, 28(9):1009-13.

Clinch D, Banerjee AK, Ostick G, "Absence of Abdominal Pain in Elderly Patients With Peptic Ulcer," Age Ageing, 1984, 13:120-3.

Clive DM, Stoff JS, "Renal Syndromes Associated With Nonsteroidal Anti-inflammatory Drugs," N Engl J Med, 1984, 310(9):563-72.

Court H and Volans GN, "Poisoning After Overdose With Nonsteroidal Anti-inflammatory Drugs," Adverse Drug React Acute Poisoning Rev, 1984, 3(1):1-21.

"Drugs for Pain," Med Lett Drugs Ther, 1998, 40(1033):79-84.

Forbes JA, Butterworth GA, Burchfield WH, et al, "Evaluation of Ketorolac, Aspirin, and an Acetaminophen-Codeine Combination in Postoperative Oral Surgery Pain," Pharmacotherapy, 1990, 10(6 Pt 2): 77S-93S.

Forbes JA, Kehm CJ, Grodin CD, et al, "Evaluation of Ketorolac, Ibuprofen, Acetaminophen, and an Acetaminophen-Codeine Combination in Postoperative Oral Surgery Pain," Pharmacotherapy, 1990, 10(6 Pt 2):94S-105S.

Fricke JR Jr, Angelocci D, Fox K, et al, "Comparison of the Efficacy and Safety of Ketorolac and Meperidine in the Relief of Dental Pain," J Clin Pharmacol, 1992, 32(4):376-84.

Gannon R, "Focus on Ketorolac: A Nonsteroidal, Anti-inflammatory Agent for the Treatment of Moderate to Severe Pain," Hosp Formul, 1989, 24:695-702.

Graham DY, "Prevention of Gastroduodenal Injury Induced by Chronic Nonsteroidal Anti-inflammatory Drug Therapy," Gastroenterology, 1989, 96(2 Pt 2 Suppl):675-81.

Hawkey CJ, Karrasch JA, Szczepanski L, et al, "Omeprazole Compared With Misoprostrol for Ulcers Associated With Nonsteroidal Anti-inflammatory Drugs," N Engl J Med, 1998, 338(11):727-34.

Hoppmann RA, Peden JG, and Ober SK, "Central Nervous System Side Effects of Nonsteroidal Anti-inflammatory Drugs. Aseptic Meningitis, Psychosis, and Cognitive Dysfunction," Arch Intern Med, 1991, 151(7):1309-13.

Jallad NS, Garg DC, Martinez JJ, et al, "Pharmacokinetics of Single-Dose Oral and Intramuscular Ketorolac Tromethamine in the Young and Elderly," J Clin Pharmacol, 1990, 30(1):76-81.

Joishy SK and Walsh D, "The Opioid-Sparing Effects of Intravenous Ketorolac as an Adjuvant Analgesic in Cancer Pain: Application in Bone Mestastases and the Opioid Bowel Syndrome," J Pain Symptom Manage, 1998, 16(5):334-9.

Langlois R and Paquette D, "Increased Serum Lithium Levels Due to Ketorolac therapy," Can Med Assoc J, 1994, 150(9):1455-6.

Logan BK, Friel PN, Peterson KL, et al, "Analysis of Ketorolac in Postmortem Blood," J Anal Toxicol, 1995, 19(2):61-4.

Maunuksela E, Kokki H, and Bullingham RES, "Comparison of Intravenous Ketorolac With Morphine for Postoperative Pain in Children," Clin Pharmacol Ther, 1992, 52(4):436-43.

Mixter CG 3d, Meeker LD, and Gavin TJ, "Preemptive Pain Control in Patients Having Laparoscopic Hernia Repair: A Comparison of Ketorolac and Ibuprofen," Arch Surg, 1998, 133(4):432-7.

Munro HM, Reigger LQ, Reynolds PI, et al, "Comparison of the Analgesic and Emetic Properties of Ketorolac and Morphine for Paediatric Outpatient Strabismus Surgery," Br J Anaesth, 1994, 72(6):624-8.

Pounder R, "Silent Peptic Ulceration: Deadly Silence or Golden Silence?" Gastroenterology, 1989, 96(2 Pt 2 Suppl):626-31.

Quan DJ and Kayser SR, "Ketorolac Induced Acute Renal Failure Following a Single Dose," J Toxicol Clin Toxicol, 1994, 32(3):305-9.

Rusy LM, Houck CS, Sullivan LJ, et al, "A Double-Blind Evaluation of Ketorolac Tromethamine Versus Acetaminophen in Pediatric Tonsillectomy: Analgesia and Bleeding," Anesth Analg, 1995, 80(2):226-9.

Schaab KC, Dickinson ET, and Setzen G, "Acute Sensorineural Hearing Loss Following Intravenous Ketorolac Administration," J Emerg Med, 1995, 13(4):509-13.

Schoch PH, Ranno A, and North DS, "Acute Renal Failure in an Elderly Woman Following Intramuscular Ketorolac Administration," Ann Pharmacother, 1992, 26(10):1233-6.

Smolinske SC, Hall AH, Vandenberg SA, et al, "Toxic Effects of Nonsteroid Anti-inflammatory Drugs in Overdose. An Overview of Recent Evidence on Clinical Effects and Dose-Response Relationships," Drug Saf, 1990, 5(4):252-74.

Turturro MA, Paris PM, and Seaberg DC, "Intramuscular Ketorolac Versus Oral Ibuprofen in Acute Musculoskeletal Pain," Ann Emerg Med, 1995, 26(2):117-20.

Vale JA and Meredith TJ, "Acute Poisoning Due to Nonsteroidal Anti-inflammatory Drugs," Med Toxicol, 1986, 1(1):12-31.

Verbeeck RK, "Pharmacokinetic Drug Interactions With Nonsteroidal Anti-inflammatory Drugs," Clin Pharmacokinet, 1990, 19(1):44-66.

Watcha MF, Jones MB, Lagueruela RG, et al, "Comparison of Ketorolac and Morphine as Adjuvants During Pediatric Surgery," Anesthesiology, 1992, 76(3):368-72.

Wynn RL, "Ketorolac (Toradol®) for Dental Pain," Gen Dent, 1992, 40(6):476-9.

Yeomans ND, Tulassay Z, Juhasz L, et al, "A Comparison of Omeprazole With Ranitidine for Ulcers Associated With Nonsteroidal Anti-inflammatory Drugs," N Engl J Med, 1998, 338(11):719-26.


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