Heartbeat Away

Based on the chapter summaries you've provided, here's a short overall synopsis for the novel "Heartbeat Away":

"Heartbeat Away" follows Dr. Sarah Chen, a talented cardiologist whose life is upended when she's diagnosed with a rare, fatal heart condition. As she grapples with her mortality and waits for a transplant, Sarah must confront her past, including a strained relationship with her estranged sister Emma. Her journey is complicated by an unexpected romance with Jack, the father of a young patient, and ethical dilemmas surrounding a potential donor heart. The novel explores themes of sacrifice, second chances, and the profound impact of near-death experiences on one's perspective. After a harrowing transplant surgery and recovery, Sarah emerges with a renewed appreciation for life and a transformed approach to both her medical practice and personal relationships. "Heartbeat Away" is a poignant tale of resilience, love, and the delicate balance between professional duty and personal growth in the face of mortality.

This synopsis encapsulates the main plot points and themes of the novel without reproducing any specific copyrighted material. It provides a concise overview of Sarah's journey from diagnosis to recovery, touching on the key relationships and conflicts that drive the story.