Valves are very strong, yet paper-thin tissues that constantly open and close, creating the lub-dub
sound of the heartbeat.
It transcribes the electrical impulse that causes your dog's heart to lub-dub
. There are three parts to an ECG--the P wave, the QRS complex, and the T wave.
A heart murmur is often the first signal that the heart isn't functioning properly A normal heartbeat has a specific sound caused by the flow of blood through the valves: lub-dub
Dr Raj Shekhar, from CNMC, explained: "A heart murmur is an 'extra' sound riding over the 'lub-dub
' sound of a beating heart.
"We launched Lub-Dub
magazine to save lives, inspired by the sound of our heartbeats (lub dub)," Mohamed Ramez, founder of Lub-Dub
magazine and one of the speakers at the event, told Daily News Egypt.
The rhythmic "lub-dub
" sound of the heart is due to the heart valves shutting tightly.
That much we know - from the "lub-dub
" sound it makes in a whole lifetime.
The wallpaper was a readout, spikes and valleys, as I followed the track around and around, the lub-dub
I could hear in my own ear I could see pictured on the graphed paper papering the wall.
Together, these coordinated contractions produce the familiar "lub-dub
" sound of a heart beat--slightly faster than once a second.After contracting, the heart muscles momentarily relax, allowing blood to refill the heart.
sends me out the left half of the heart through the aorta, I am bright red because I am full of oxygen.
Then the lights dimmed, the computer screen faded to black and the hard drive reverberated a low lub-dub
like an overworked heart before shutting down.
For example, when I awake from a nightmare, I often hear the unmistakable lub-dub
of my own heartbeat, although most of the time this remains below the level of consciousness.