is it necessary that the systolic BP is the first and the loudest sound?

Question

or the first sound only not necessarily the loudest sound?
before i heard the loudest beat, i heard some sound - like small beats...
pls. help...

Answer 1

It is the 1st beat that you hear.

Answer 2

The blood pressure is determined by when you can first hear the heart beating as the BP cuff is being deflated, to when you stop hearing it beat. The systolic (or higher number) is caused by the heart contracting and forcing blood through the blood vescles of the body. This is the maximum pressure that your heart is putting on the blood vescles at that moment. As the pressure in the bladder of the BP cuff decreases, the pressure with which it is squeezing around the arm (measured in mm of mercury) is also decreasing. The lower number tells you what the residual (or left over) pressure remaining in the blood vescles is when your heart is at rest (not contracting). Since you are measuring as the pressure in the cuff is decreasing then yes, the systolic pressure/ number will always be first and higher.

Also, if you are using a sphygmomanometer (BP cuff) and listening to it yourself, as opposed to using a machine, the numbers should always be expressed in even numbers only. The BP cuff is only marked in even numbers.

You should only hear one beat, or sound, for each heart beat when you are taking a blood Pressure. Some reasons (but not all) for hearing more sounds include the tube, or tubes, running from the "bell" to the ear pieces rubbing togeather to impropper hand position on the bell. This can result in artifact noise and even hearing your own heart beat if you have your thumb over the back of the bell piece!

If you are using a stethescope to listen to the heart beat in the chest, you may hear two beats. The first beat is made by the two atrium (the upper chambers of the heart whos job it is is to fill (or over fill) the two lower chambers of the heart (the ventricles). The ventricles then contrack, causing the second beating sound, and pump this increased volume of blood to the lungs to pick up oxygen (in the case fo the right ventricle) or to the rest of the body to dispense this oxygen (in the caes of the left ventricle). Extra or missing beats can be from mechanical or electrical malfunctions going on in the heart as well.

I hope this is helpful.

Answer 3

The systolic BP is the first sound that's heard. It can be louder than the diastolic, but that's not always the case.