dˈeɪtaɪm hˌaɪpoʊpnˈiː ᵻvˈɛnts, haʊˈɛvɚ, ɑːɹ mˈoʊstli lˈɪmɪɾᵻd tə ðoʊz wɪð sᵻvˈɪɹli kˈɑːmpɹəmˌaɪzd ɹˈɛspɹətˌoːɹi mˈʌsəlz, æz əkˈɜːz ɪn sˈɜːʔn̩ nˌʊɹɹəmˈʌskjʊlɚ dɪzˈiːzᵻz ɔːɹ kˈɑːmpɹəmˌaɪzd sˈɛntɹəl ɹˈɛspɹətˌoːɹi dɹˈaɪv, æz əkˈɜːz ɪn kəndˈɪʃənz sˈʌtʃ ɐz ɐkwˈaɪɚd ɔːɹ kəndʒˈɛnɪɾəl sˈɛntɹəl hˌaɪpoʊvˌɛntɪlˈeɪʃən sˈɪndɹoʊm ɐtʃz ɔːɹ sˌiːsˌiːˌeɪtʃˈɛs.
Daytime hypopnea events, however, are mostly limited to those with severely compromised respiratory muscles, as occurs in certain neuromuscular diseases or compromised central respiratory drive, as occurs in conditions such as acquired or congenital central hypoventilation syndrome (ACHS or CCHS).