Anastrozole (Arimidex - Zeneca), a selective nonsteroidal aromatase inhibitor, has been approved by the US Food and Drug Administration (FDA) for treatment of postmenopausal women with advanced breast cancer that has progressed during treatment with tamoxifen (Nolvadex, and others).

Samarium-153 lexidronam (Quadramet - Dupont Pharma) has been approved by the FDA for relief of pain in patients with osteoblastic bone metastases. Strontium-89 (Metastron) has been available for several years for this indication (Medical Letter, 35:102, 1993).

Bromfenac sodium (Duract - Wyeth-Ayerst), a nonsteroidal anti-inflammatory drug (NSAID), has been approved by the US Food and Drug Administration (FDA) and is being heavily advertised as an alternative to narcotics for short-term treatment of pain.

Irbesartan (Avapro - Sanofi/Bristol-Myers Squibb) is the third angiotensin II receptor antagonist to become available in the USA for oral treatment of hypertension. Losartan (Cozaar) and valsartan (Diovan) were marketed earlier. Eprosartan (Teveten - SmithKline Beecham) has been approved by the FDA but not marketed.

The FDA has approved Nuedexta (Avanir), a fixed-dose combination of the cough suppressant dextromethorphan hydrobromide and the antiarrhythmic quinidine sulfate, for oral treatment of pseudobulbar affect. The combination is the first treatment approved by the FDA for this indication. Studies to support the effectiveness of Nuedexta were performed in patients with underlying amyotrophic lateral sclerosis (ALS) or multiple sclerosis (MS); the drug has not been shown to be safe or effective in other types of emotional lability.

The FDA has approved Qmiiz ODT (TerSera), an orally disintegrating tablet formulation of the prescription NSAID meloxicam. Qmiiz ODT, like conventional oral meloxicam tablets (Mobic, and generics), is indicated for relief of the symptoms of osteoarthritis (OA) and rheumatoid arthritis (RA) in adults and of juvenile RA in children who weigh ≥60 kg. Vivlodex, a low-dose capsule formulation of meloxicam, is FDA-approved only for management of OA pain.

Sudden cardiac arrest has a survival rate of about 6% without immediate defibrillation. Automated external defibrillators (AEDs) can be found in many public locations such as shopping malls, office buildings and schools. Some patients may ask their physicians whether they should purchase an AED for personal use. One device has been FDA-approved for sale over the counter (HeartStart Home Defibrillator - Philips). Purchase of all other AEDs for public places or home use requires authorization from a physician.

A variety of glucose monitoring devices have been used in an effort to reduce the hypoglycemia and wide glucose excursions that complicate insulin treatment of diabetes. Since the last Medical Letter issue reviewing such devices, more continuous glucose monitoring (CGM) systems have become available. Five devices available now, and two expected to be marketed soon, are listed in the table on page 14. The FDA has approved continuous glucose devices only for the observation of glucose trends.

The drugs of choice for treatment of common cardiac arrhythmias are listed in Tables 1 and 2. Some drugs are recommended for indications that have not been approved by the FDA.

A new CDC guideline for prescribing opioids for pain recently became available. Nonopioid drugs for pain were reviewed in a previous issue.