ɪn slˈiːp klˈɪnɪks, əbstɹˈʌktɪv slˈiːp ɐpnˈiə sˈɪndɹoʊm ɔːɹ əbstɹˈʌktɪv slˈiːp ɐpnˈiə hˌaɪpoʊpnˈiː sˈɪndɹoʊm ɪz nˈoːɹməli dˌaɪəɡnˈoʊzd bˈeɪst ɔnðə fɹˈiːkwənt pɹˈɛzəns ʌv ɐpnˈiəz ænd slˈæʃ ɔːɹ hˌaɪpoʊpnˈiːz ɹˈæðɚ ðɐn dˌɪfɚɹˈɛnʃɪˌeɪɾɪŋ bᵻtwˌiːn ðə tˈuː fɪnˈɑːmɪnə.
In sleep clinics, obstructive sleep apnea syndrome or obstructive sleep apnea–hypopnea syndrome is normally diagnosed based on the frequent presence of apneas and/or hypopneas rather than differentiating between the two phenomena.