The main feature of coronary care is the availability of telemetry or the continuous monitoring of the cardiac rhythm by electrocardiography.
One definition of a hook is a musical or lyrical phrase that stands out and is easily remembered. Definitions typically include some of the following: that a hook is repetitive, attention-grabbing, memorable, easy to dance to, and has commercial potential and lyrics. A hook has been defined as a part of a song, sometimes the title or key lyric line, that keeps recurring.
Function of Hook. Authors use hook as a critical component of their writing, as it allows them to demonstrate the readers how their literary works are worth reading within the first minute. This literary technique hooks the attention of readers and appeals their minds.