Actinomycin D | See guidelines for "Dactinomycin" |
Adriamycin | See guidelines for "Doxorubicin HCl" |
Alimta | See guidelines for "Pemetrexed disodium" |
Alkeran | See guidelines for "Melphalan HCl" |
BCNU | See guidelines for "Carmustine" |
Bendamustine HCl (Treanda; distributed by Cephalon, Inc., Frazer, PA) |
Irritant | No known antidotes | | Product labeling for Treanda (dated, July 2010) indicates extravasation has resulted in hospitalization with " . . . erythema, marked swelling, and pain. Precautions should be taken to avoid extravasation, including monitoring of the intravenous infusion site for redness, swelling, pain, infection, and necrosis during and after administration . . ." |
Camptosar | See guidelines for "Irinotecan HCl" |
Carboplatin (available generically) |
Unclassifieda | No known antidotes | No specific local therapy is indicated | |
Carmustine (also called BCNU, BiCNU; distributed by Bristol-Myers Squibb Company, Princeton, NJ)1 |
Irritant | No known antidotes | | Patients may complain of irritation and stinging pain during administration—a result of ethanol used to reconstitute carmustine Topical sodium bicarbonate solution inactivates carmustine spilled or splashed on the skin, but MUST NOT be injected locally in the event of carmustine extravasation |
Cisplatin (available generically)2,3,4,5 |
Irritant | See Comments | No local therapy is indicated after extravasation with small volumes of dilute cisplatin solutions (see Comments) Extravasation with large volumes or highly concentrated cisplatin solutions may be treated as an extravasation with mechlorethamine (see Comments) | Injury to soft tissues has been reported after extravasation of cisplatin solutions with concentrations >0.4 mg/mL3 Product labeling for Cisplatin Injection (dated, January 2008; APP Pharmaceuticals, LLC, Schaumberg, IL) indicates administration of solutions with a cisplatin concentration >0.5 mg/mL may result in local soft-tissue toxicity with cellulitis, fibrosis, and necrosis Although sodium thiosulfate has been recommended to chemically neutralize cisplatin, the conditions under which cisplatin extravasation will produce severe morbidity and tissue necrosis remain undefined (with respect to a threshold concentration or volume extravasated); therefore, the most appropriate use of sodium thiosulfate is not known |
Cosmegen | See guidelines for "Dactinomycin" |
Dacarbazine (also called DTIC; available generically)6,7 |
Irritant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug No local therapy is indicated Protect exposed tissues from light following extravasation Elevate an involved extremity Avoid applying pressure to the extravasation site | |
Dactinomycin (also called actinomycin D; available generically) |
Vesicant | No known antidotes | Conservative managementa Product labeling for Dactinomycin for Injection recommends applying ice to the site for 15 minutes four times daily for 3 days (alternatively, substitute circulating ice water, an ice pack, or other cold compress) | Extravasation may occur with or without an accompanying burning or stinging sensation, even with a good blood return on aspiration from the injection site Topical cooling has been inconsistently effective in animal studies Blistering, ulceration, and persistent pain are indications for wide excision surgery, followed by skin grafting
|
Daunorubicin HCl (also called daunomycin. Cerubidine™; Bedford Laboratories, Bedford, OH; available generically) |
Vesicant | Dexrazoxane (see Comments) | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes four times daily for at least 48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | Administer dexrazoxane for anthracycline extravasationc, 8,9,10: Dexrazoxane 1000 mg/m2 per day (maximum daily dose is 2000 mg) intravenously, diluted in 1000 mL 0.9% sodium chloride injection (0.9% NS) over 1–2 hours for 2 consecutive days, on days 1 and 2, followed by: Dexrazoxane 500 mg/m2 (maximum dose is 1000 mg) intravenously, diluted in 1000 mL 0.9% NS over 1–2 hours on day 3 after extravasation Effectiveness is decreased if dexrazoxane administration is initiated more than 6 hours after extravasation Repeated doses (days 2 and 3) should be administered 24 ± 3 hours after a previously administered dose Decrease dexrazoxane dosage by 50% for patients whose creatinine clearance is <40 mL/min (<0.66 mL/s) |
Daunorubicin citrate liposome injection (also called DaunoXome®; Galen US Inc, Souderton, PA)11,12,13 |
Irritant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes 4 times daily for at least 48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | |
DaunoXome | See guidelines for "Daunorubicin citrate liposome injection" |
Docetaxel (available generically)14,15,16 |
Vesicant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–20 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site | Extravasation often presents acutely with erythema, swelling, and tenderness of the involved site, but onset may be delayed by several days. Blistering and onset or exacerbation of pain may be delayed by several days. Erythema and edema may increase markedly during the first week. Skin desquamation characteristically occurs within 2–3 weeks It is not yet clear whether application of either cold or heat provides benefit in managing extravasation with taxoid drugs. In one case report, erythema and hyperpigmentation may have been exacerbated by warming after extravasation with the related drug, paclitaxel17 Locally altered tactile sensation (dysesthesias or loss of sensation) may persist for months after an extravasation event15,18 |
Doxil | See guidelines for "Doxorubicin HCl liposome injection" |
Doxorubicin HCl (available generically)19,20,21,22 |
Vesicant | Dexrazoxane (see Comments for Daunorubicin HCl) | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes 4 times daily for at least 48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | Administer Dexrazoxane as for extravasation with Daunorubicin HCl (see "Daunorubicin HCl," Comments)8,9,10 Seek surgical consultation, especially if a patient reports pain at the extravasation site within 10 days after the event. Surgical debridement or excision may be required to remove nonviable tissues, release trapped drug, and prevent more extensive prolonged tissue injury Early surgical intervention should be reserved for patients with local uncontrolled pain, repeated infections, or limb restriction attributed to extravasation injury23 Anecdotes and at least 1 prospective study suggest DMSO may mitigate local morbidity after extravasation with doxorubicind |
Doxorubicin HCl liposome injection (Doxil; Centocor Ortho Biotech Products LP, Raritan, NJ)24,25,26,27 |
Irritant–Vesicant | No known antidotes | Product labeling for Doxil (dated, November 2010) advises application of ice over the site of extravasation for approximately 30 minutes may be helpful in alleviating the local reaction Elevate an involved extremity Avoid applying pressure to the extravasation site | Consider administering dexrazoxane9,28 as for extravasation with daunorubicin HCl (see "Daunorubicin HCl," Comments) The severity of tissue injury may be related to the volume and duration for which the extravasated drug remains in contact with the affected site25 |
Ellence | See guidelines for "Epirubicin HCl" |
Eloxatin | See guidelines for "Oxaliplatin" |
Epirubicin HCl (Ellence; Pharmacia & Upjohn Company, Division of Pfizer Inc., New York, NY)29 |
Vesicant | Dexrazoxane (see Comments for daunorubicin HCl) | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes 4 times daily for at least 48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | Administer dexrazoxane as for extravasation with daunorubicin HCl (see "Daunorubicin HCl," Comments)8,9,10,30 Anecdotes and at least one prospective study suggest DMSO may mitigate local morbidity following extravasation with epirubicind |
Etoposide (available generically)31 |
Irritant (see Comments) | | | |
Fluorouracil (Adrucil; SICOR Pharmaceuticals, Inc, Irvine, CA) |
Irritant | | | |
Gemcitabine HCl (Gemzar; Eli Lilly and Company, Indianapolis, IN) |
Not well defineda, but not a vesicant (see Comments) | No known antidotes | | |
Gemzar | See guidelines for "Gemcitabine HCl" |
Hycamtin | See guidelines for "Topotecan HCl" |
Idarubicin HCl (Idamycin; Pharmacia & Upjohn Company, Division of Pfizer Inc., New York, NY)32 |
Vesicant | Dexrazoxane (see Comments for Daunorubicin HCl) | | |
Irinotecan HCl (Camptosar; Pharmacia & Upjohn Company, Division of Pfizer Inc., New York, NY) |
Unclassifieda | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site
| The recommendations for local care are based on product labeling for Camptosar (dated August 2010), which specifies in the event of extravasation: ". . . flushing the site with sterile water [intradermally] and applications of ice [topically]. . . ." Healthcare providers should note subcutaneous infiltration and intradermal irrigation with solutions as a means of diluting and removing an extravasated drug are experimental techniques
|
Mechlorethamine HCl (also called nitrogen mustard, HN2; Trituration of Mustargen; Lundbeck Inc., Deerfield, IL)33,34,35,36 |
Vesicant | Isotonic sodium thiosulfate 0.167 mol/L (Na2S2O3 1/6 M) solution | Aspirate back through the VAD to remove any accessible extravasated drug Inject 1/6 M Na2S2O3 solution through IV access device: 2–5 mL for each milligram of mechlorethamine extravasated Remove IV access device With a 25G or smaller-gauge needle, inject subcutaneously 1/6 M Na2S2O3 solution circumferentially around the perimeter of the involved site: 2 mL for each milligram of mechlorethamine extravasated After sodium thiosulfate injection, apply an ice pack or cold compress for 6–12 hours to minimize the local reaction Elevate an involved extremity Avoid applying pressure to the site | Extravasation of the mechlorethamine into subcutaneous tissues results in painful inflammation RAPID intervention is essential in treating mechlorethamine extravasation Na2S2O3 solution chemically neutralizes mechlorethamine The intervention is clinically accepted, but reports confirming benefit are scant Preparation of a 1/6 M sodium thiosulfate (Na2S2O3 ) solution Starting with 10% Na2S2O3 solution (1 g/10 mL): Starting with 25% Na2S2O3 solution (2.5 g/10 mL): Starting with anhydrous Na2S2O3 dilute 2.64 g in 100 mL water for injection |
Melphalan HCl (also called L-PAM, L-phenylalanine mustard; Alkeran; GlaxoSmithKline, Research Triangle Park, NC) |
Vesicant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site | Product labeling for Alkeran for Injection (dated June 9, 2011) stipulates extravasation may cause local tissue damage, and reports among adverse reactions, skin ulceration at injection site, and skin necrosis rarely requiring skin grafting An experimental study in mice inconsistently produced ulceration after intradermal injection of melphalan; doses, but not drug concentration were specified5 |
Mithramycin | See guidelines for "Plicamycin" |
Mitomycin (mitomycin-C, Mutamycin; Bristol-Myers Squibb Oncology, Bristol-Myers Squibb Company, Princeton, NJ. available generically)37,38,39,40,41,42 |
Vesicant | No known antidotes | Conservative managementa Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | Extravasation is typically accompanied by pain and swelling, but initially may be painless Mitomycin is associated with ulceration at areas of recent vascular damage, including venipuncture sites that are distant from the site of extravasation Dermal injury after mitomycin extravasation may be delayed from 1 to 29 weeks after administration Mitomycin extravasation injury may occur, may be exacerbated, or may recur after the affected area is exposed to sunlight37 Anecdotes and at least one prospective study suggest that topically applied DMSO may mitigate local morbidity after extravasation with mitomycind |
Mitoxantrone HCl (Novantrone; marketed by (osi)™ oncology, OSI Pharmaceuticals, Inc, Melville, NY)5,43,44 |
Vesicant | Dexrazoxane (see Comments for Daunorubicin HCl) | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes 4 times daily for at least 48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the extravasation site | Consider administering dexrazoxane28 as for extravasation with daunorubicin HCl (see "Daunorubicin HCl," Comments) May cause blue discoloration in soft tissues where infiltration occurs Inconsistently produces tissue necrosis after extravasation When ulceration occurs, lesions may spontaneously resolve with conservative management |
Navelbine | See guidelines for "Vinorelbine tartrate" |
Nitrogen mustard | See guidelines for "Mechlorethamine HCl" |
Novantrone | See guidelines for "Mitoxantrone HCl" |
Oncovin | See guidelines for "Vincristine sulfate" |
Oxaliplatin (Eloxatin; Sanofi-Synthelabo Inc, New York, NY)45,46,47 |
Irritant–Vesicant (see Comments) | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site Orally administered nonsteroidal analgesics may be useful in managing pain and inflammation | Product labeling for Eloxatin (dated March 2009) indicates necrosis associated with extravasation has been reported Inflammatory reactions were reported after oxaliplatin extravasation (approximate amount extravasated: 40–104 mg)47 Clinical appearance within 2–3 days after extravasation is described as resembling erysipelas, with swelling, pain, induration, erythema, local heat, and impaired movement when joints are involved Although there is concern that cold compresses may trigger the cold temperature-induced neuropathy associated with oxaliplatin,46 both cold and warm compresses have been used to manage oxaliplatin extravasation without reports of deleterious effects from either intervention47,48 Induration, inflammation, and paresthesias may persist for weeks after an extravasation event46 |
Paclitaxel (available generically) 49,50,51,52 |
Vesicant (see Comments) | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–20 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site | Onset of an injection site reaction may be delayed by up to 10 days Paclitaxel administration after paclitaxel extravasation at a different site has been associated with recurrence of skin reactions at the site of prior extravasation, ie, a "recall" reaction It is not yet clear whether application of either cold or heat provides benefit in managing paclitaxel extravasation. In 1 case report, blisters, erythema, and hyperpigmentation may have been exacerbated by warming17 Gross and microscopic examination of biopsied and excised tissues from paclitaxel extravasation injuries reveals tissue necrosis.52,53 Anecdotal reports support product labeling which indicates extravasation reactions are usually mild, consisting of erythema, tenderness, skin discoloration, or swelling at the injection site. In general, administration procedures and extravasation management follow procedures developed for irritant (not vesicant) hazardous drugs Skin overlying the extravasation site may become inflamed (mimicking a first-degree thermal burn) and desquamate In 2 reported cases, subcutaneous perilesional infiltration with hyaluronidase after paclitaxel extravasation may have delayed healing54 Involved site dysesthesias or sensory loss are common sequelae; motor weakness also has been reported |
Paraplatin | See guidelines for "Carboplatin" |
Pemetrexed disodium (Alimta; Eli Lilly and Company, Indianapolis, IN) |
Unclassifieda (see Comments) | No known antidotes | | |
Platinol | See guidelines for "Cisplatin" |
Plicamycin (not currently marketed in the United States) |
Irritant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug No specific local therapy is indicated Elevate an involved extremity Avoid applying pressure to the site
| |
Taxol | See guidelines for "Paclitaxel" |
Taxotere | See guidelines for "Docetaxel" |
Teniposide (Vumon; Bristol Laboratories Oncology products, a Bristol-Myers Squibb Company, Princeton, NJ) |
Irritant–Vesicant (see Comments) | | | |
Topotecan HCl (Hycamtin; GlaxoSmithKline, Research Triangle Park, NC) |
Irritant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Apply cold to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–20 minutes 4 times daily for 24 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site | Product labeling for Hycamtin (dated April 2010) indicates ". . . most [extravasation] reactions have been mild but severe cases have been reported" In 2 cases, extravasation was accompanied by pain, which resolved soon after discontinuing drug administration, and swelling that resolved within 24 hours without evidence of redness or ulceration. In one case, topical cooling was applied to mitigate swelling. There were no sequelae in either case. One patient received topotecan on the day after extravasation without adverse effects related to extravasation, and both patients received one or more additional courses of topotecan without morbidity related to the extravasation events55 |
Treanda | See guidelines for "Bendamustine HCl" |
Velban | See guidelines for "Vinblastine sulfate" |
Vinblastine sulfate (available generically)56,57,58,59 |
Vesicant | No known antidotes | Aspirate back through the VAD to remove any accessible extravasated drug Consider dispersing the drug by administering hyaluronidase injection (150–300 units diluted in 1–6 mL 0.9% sodium chloride injection injected either into the VAD through which the extravasated drug was administered), by subcutaneous injection with a fine-gauge needle circumferentially around the perimeter of the involved site, or a combination of both techniques Note: Hyaluronidase is marketed in the United States in several formulations: solutions containing 150 USP units or 200 USP units/mL, and a lyophilized powder for reconstitution for injection Apply warm packs for 15–20 minutes at least 4 times daily for 24–48 hours after extravasationb Elevate an involved extremity Avoid applying pressure to the site | Warmth increases local blood flow, enhancing drug dispersal from the site Hyaluronidase may further aid dispersing the drug from the site of extravasation DO NOT apply topical steroid products. Topical steroids have exacerbated extravasation injury associated with Vinca alkaloids in animal models |
Vincristine sulfate (available generically)59,60 |
Vesicant | No known antidotes | | |
Vindesine sulfate (not currently marketed in the USA)61,62 |
Vesicant | No known antidotes | | |
Vinorelbine tartrate (available generically)59,63,64,65 |
Vesicant | No known antidotes | | |
VM-26 | See guidelines for Teniposide |
VP-16, VP-16-213 See guidelines for Etoposide |
aConservative management When it is not known whether a drug is an irritant or a vesicant, and specific antidotes and other remedies have not been identified for mitigating toxicity after extravasation: Aspirate back through the infiltrated VAD to remove any accessible extravasated drug Apply topical cooling to an involved extremity with circulating ice water, an ice pack, or a cold compress for 15–60 minutes at least 4 times daily for 24–48 hours after extravasationb When the site of extravasation is located on an extremity, elevate the involved extremity Avoid applying pressure to an extravasation site Closely monitor the site of extravasation serially (watchful waiting). The appearance of tissue injury related to extravasation becomes less likely with the passage of time With the exception of mitomycin, for which the onset of acute extravasation injury may appear late, or after repeated exposure to the drug or after exposure of the injured site to ionizing or solar radiation37,39,41,42,66 Seek surgical consultation, especially if a patient reports pain at the extravasation site within 10 days after the event. Although recommendations for surgical treatment of tissue injury from extravasated drugs are not uniform with respect to standard techniques or interventional timing, surgical debridement or excision may be required to remove nonviable tissues and lesions complicated by secondary infection, remove active vesicant drug that remains sequestered in tissues to prevent more extensive prolonged tissue injury, and in skin grafting Early surgical intervention should be reserved for patients with uncontrolled local pain, repeated infections, or limb restriction attributed to extravasation injury Severe pain, blistering, and ulceration, at a site of extravasation have generally been considered indications for surgical excision10 If surgical excision is used to remove anthracycline drugs remaining in tissues after extravasation, the procedure may be guided intraoperatively by fluorescence microscopy. Fluorescence-positivity in tissue biopsies is indicative of the presence of anthracycline drugs, and facilitates differentiating between affected and drug-free tissues67,68,69,70,71,72 bHeating and cooling Optimal temperatures and the frequency and duration for applying warm and cold compresses over areas of extravasation injury are not known. Heat produces vasodilation with local hyperemia, which facilitates drug absorption and dispersion,10 but may also increase the cytotoxic effect of some drugs (eg, anthracyclines).73,74 Cooling produces local vasoconstriction, which inhibits dispersion of a drug through extravascular tissues, thus, in an acute setting, potentially decreasing the extent of cytotoxic injury. Topical cooling also may decrease local swelling and provide an analgesic effect;10 however, topical cooling should be used with caution around the time local or systemic antidotes are administered to avoid decreasing the distribution of antidote to tissues involved in an extravasation. When thermal interventions are utilized, caregivers should instruct patients to apply heat or cold intermittently for as long as possible during each application, but not with extremes of temperature or for durations that may compromise a patient's comfort or quality of life cDexrazoxane (ICRF-187) Administer dexrazoxane in a large vein over 1–2 hours at a site remote from the site of anthracycline extravasation (eg, a contralateral extremity) Adverse effects commonly associated with dexrazoxane use, include decreased leukocyte, neutrophil, and platelet counts; decreased hemoglobin; and increased serum alanine and aspartate aminotransferases and bilirubin; injection site pain; fever; nausea; vomiting; diarrhea; and constipation After dexrazoxane use, monitor a patient's complete blood cell and leukocyte differential counts and hepatic transaminases in blood or serum DO NOT apply topical cooling to a site of extravasation within 15 minutes before or after, or during dexrazoxane administration DO NOT apply topical DMSO concurrently with dexrazoxane use dDimethyl sulfoxide (DMSO, CAS 67-68-5, NSC 763) Topical application and intradermal injection of DMSO to treat extravasation injuries are controversial. Appropriate application settings and optimal strategies for utilizing DMSO after extravasation with particular antineoplastic drugs have not been defined Clinical anecdotes and at least 1 prospective study suggest dimethyl sulfoxide may prevent ulceration and mitigate local morbidity after extravasation of anthracyclines, mitomycin, and perhaps other drugs. However, in the majority of reports in which benefit was suggested, drug extravasation was suspected based on clinical observations but not confirmed (eg, by fluorescence microscopy-guided biopsy for anthracyclines); thus, neither extravasation nor clear attribution of benefit from DMSO use can be confirmed. In at least 2 anecdotal reports, a single application of DMSO and application 3-times-daily, respectively, were ineffective in preventing vesicant reactions75, 76 DMSO should NOT be used concomitantly with dexrazoxane for anthracycline extravasation9,77,78 Note: The following regimens are not ordered or ranked by either preference or effectiveness Regimen 1. Dimethyl sulfoxide 50% (w/w) 1–2 mL applied topically over the involved site once, followed by cold compresses applied topically for 15–20 minutes every hour for 12–24 hours42 Regimen 2. Dimethyl sulfoxide 99% 4 drops/10 cm2 of involved skin surface area, applied topically over an area 2-fold greater than the affected area (including the involved site) every 8 hours for 1 week. The solution is left to dry in air without a dressing, and its administration is followed by local cooling with a cold pack applied topically to the involved site for 60 minutes every 8 hours for the first 3 days after an extravasation event79 Treatment continued for up to 6 weeks in 29.3% of cases as a result of persistent symptoms Fourteen of 127 evaluable patients sustained residual mild induration of perivascular tissues without functional impairment after a median follow-up duration of 18.5 months Regimen 3. Dimethyl sulfoxide 99% applied topically over an area 2-fold greater than the affected area (including the involved site) every 6 hours for 14 days. The solution is left to dry in air without a dressing80 Regimen 4. Dimethyl sulfoxide 99% or 50% 15 mL or dimethylsulfoxide 75% volume not specified, applied topically over the involved site every 2–4 hours (at least every 6 hours) for at least 3 days after the extravasation event with topical cooling81 Among 4 patients treated, all received intradermal steroids injected into or around the site of suspected extravasation and topical cooling. One patient also received local injection of sodium bicarbonate Note: The U.S. Food and Drug Administration has approved dimethyl sulfoxide 50% (w/w) for administration to human subjects only for the symptomatic relief of interstitial cystitis. Dimethyl sulfoxide 99.0% is commercially marketed for cryopreservation, and is also available in various concentrations and purity grades for veterinary and laboratory use and as an industrial solvent. Dimethyl sulfoxide or particular product concentrations may not be commercially available in all countries. Healthcare providers are urged not to use DMSO products other than those labeled for clinical use. Although chemically equivalent, DMSO not formulated for use in human subjects may contain and facilitate systemic absorption of chemical impurities and contaminants during topical or parenteral use |