Betamethasone is also used prior to delivery of a preterm baby to help prepare the lungs for breathing. However, because betamethasone crosses the placenta, which is required for its beneficial effects, it may also be associated with complications, such as hypoglycemia and leukocytosis in newborns exposed in utero. When injected into the epidural space or the spine, it may cause serious side effects like loss of vision, stroke, and paralysis. Forms
Betamethasone is available in a number of compound forms: betamethasone dipropionate (branded as Diprosone, Diprolene, Celestamine, Procort (in Pakistan), and others), betamethasone sodium phosphate (branded as Bentelan in Italy) and betamethasone valerate (branded as Audavate, Betnovate, Celestone, Fucibet, and others). In the United States and Canada, betamethasone is mixed with clotrimazole and sold as Lotrisone and Lotriderm. It is also available in combination with salicylic acid (branded as Diprosalic) for using in psoriatic skin conditions. In some countries, it is also sold mixed with both clotrimazole and gentamicin to add an antibacterial agent to the mix. Betamethasone sodium phosphate mixed with betamethasone acetate is available in the United States as Celestone Soluspan. See also
Betamethasone/dexchlorpheniramine

References
External links
"Betamethasone". Drug Information Portal. U.S. National Library of Medicine. "Betamethasone sodium phosphate". Drug Information Portal. U.S. National Library of Medicine. "Betamethasone acetate mixture with betamethasone sodium phosphate". Drug Information Portal. U.S. National Library of Medicine.
Biphasic stridor (occurring during both the inspiratory and expiratory phases) indicates narrowing at the level of the glottis or subglottis, the point between the upper and lower airways. See also
Crackles (also called "crepitations" or "rales")
Rhonchi
Squawk (sound)

References
Further reading
Godfrey S, Uwyyed K, Springer C, Avital A (Mar 2004). "Is clinical wheezing reliable as the endpoint for bronchial challenges in preschool children?". Pediatric Pulmonology. 37 (3): 193–200. doi:10.1002/ppul.10434. PMID 14966812. S2CID 25264776. External links

Audio Breath Sounds - Multiple case studies with audio files of lung sounds. R.A.L.E. Repository - sound files of breath sounds