準急性照護專科護理師之角色是自1990年代開始，當時是由於急性照護場所缺乏實習醫師及住院醫師所造成。第一年對準急性照護專科護理師的角色轉變，他們學習對住院病患提供高品質健康照護的能力。至今，這些新興角色轉變過程之經驗也尚未被探討。本研究目的旨在了解醫護合作模式中，準急性照護專科護理師第一年經歷角色轉變之經驗。本研究以質性調查法，深入調查訪問臺灣某一醫學中心內10位在醫護合作模式下之準急性照護專科護理師其參加ACNP標準教育訓練者之第一年角色轉變的經驗歷程。研究結果顯示這些資深護理人員在醫護合作模式下轉變成準急性照護專科護理師的第一年需經歷以下三個時期：角色模糊期、角色獲得期及角色執行期。其每個時期皆包含許多次要的經驗特質。醫護合作模式中，準急性照護專科護理師第一年的角色轉變經驗需經歷某些時期，本研究將強調要成為準急性照護專科護理師之首年的經驗歷程、困難及現況。

The role of the acute care nurse practitioner in Taiwan has changed significantly since the 1990s due in significant part to a shortage of interns and resident physicians in acute care settings. The first year of professional practice represents an important transitional year during which new professionals develop their competency to provide high-quality care to hospitalized patients. As the actual experience of individuals undergoing this transitional process into their new role has yet to be fully explored, this research studied and categorized the experiences of acute care nurse practitioners during their first year of role transition under the collaborative model of practice. We used a qualitative inquiry method with in-depth interviews to investigate the relevant experiences of 10 acute care nurse practitioners working at a medical center in Taiwan. Results show that the experience of expert nurses in their transition to acute care nurse practitioners passed through three phases during the first year under the collaborative practice model. These phases include the role ambiguity, role acquisition, and role implementation phases. Each phase contained a set of sub-themes which describe the multiple dimensions of this experience. This study highlights the experiences, stresses and accomplishments of acute care nurse practitioners during their initial year of advanced practice.