<prompt> Translate the following text to SwahiliResearchers announced that Spironolactone, a 40-year-old, inexpensive medication used to treat water retention, cut death from congestive heart failure by 30 percent in experimental trials.  <response>: Watafiti wamegundua kwamba dawa ya Spironolactone, ambayo ni dawa ya kawaida ya kuzuia kutokwa na maji, imepunguza vifo vya watu wenye ugonjwa wa moyo kwa asilimia 30 katika majaribio ya utafiti. 