Dub Heart Sound (HD)

Thorne picked up his stethoscope. He placed it not on the left side of the chest, where the apex was, but over the right sternal border—the area of the aorta, the exit.

He listened to the silence. He wasn't listening for a beat. He was listening for the echo of the life that had just left.

Abnormalities of the dub heart sound can indicate underlying cardiac problems. Some common abnormalities include: dub heart sound

The dub sound is generated by the rapid closure of the aortic and pulmonary valves. When the ventricles contract, the pressure inside the ventricles increases, causing the aortic and pulmonary valves to open and allow blood to flow into the aorta and pulmonary artery. As the ventricles relax, the pressure decreases, and the valves close, producing the dub sound.

"There is no sound," Thorne said softly. "The Dub is gone." Thorne picked up his stethoscope

"Nurse," Thorne said, his voice low. "What's the current BP?"

He pulled the stethoscope from his ears, letting it hang around his neck. The metal was still warm from his skin. He wasn't listening for a beat

Located on the right side, it closes when the right ventricle finishes pumping blood toward the lungs.

The dub heart sound is an essential component of the cardiac cycle, and its absence or alteration can indicate underlying cardiac problems. Some of the clinical significance of the dub heart sound includes: