Biomedical sensors

Wearable biomedical devices:
pulse rate monitors
low-cost and small devices
Important design requirements for these systems include miniaturization, robustness and user-friendliness.
These devices have a sensor that monitors minor variations in the intensity of light transmitted through or reflected from the tissue.

1. W earable biomedical devices

2. W earable biomedical devices pulse rate monitors low-cost and small devices Important design requirements for these systems include miniaturization, robustness and user-friendliness. These devices have a sensor that monitors minor variations in the intensity of light transmitted through or reflected from the tissue.

3. CONTENT H olter device E lectrocardiogram P hotoplethysmography

4. H olter device In medicine, a Holter monitor (often simply Holter) is a type of  ambulatory electrocardiography device , a portable device for cardiac monitoring (the monitoring of the electrical activity of the cardiovascular system) for at least 24 to 72 hours (often for two weeks at a time). Ritim Bozuklukları Teşhisi : Holter Nedir ? (neyedenir.com)

5. Working size is small several wires are attached to the monitor wires or leads are connected to electrodes that are placed on the skin on your chest with a gel The metal electrodes conduct your heart activities through the wires and into the holter monitor, where its record

6. Procedure Prepare your skin for the electrode Always wear the monitor Record activities in the diary Avoid things that create interference

7. ECG An electrocardiogram records the electrical signals in your heart. It's a common and painless test used to quickly detect heart problems and monitor your heart's health. Ekg Monitor Stok Fotoğraflar & Yoğun Bakım Ünitesi‘nin Daha Fazla Resimleri - iStock (istockphoto.com)

8. Identify the Problem ischemic heart muscle (heart muscle getting low blood flow) damaged heart muscle enlargement of the heart irregular heart beats or rhythms previous heart attacks abnormal amounts of potassium in the blood congenital heart disease (heart disease present at birth) problems with heart valves.

9. working small electric current For a resting electrocardiogram The electrode picks up the current and transmit them to an amplifier inside the electrocardiograph. In an electrocardiograph, a sensitive lever traces the changes in current on a moving sheet of paper. It is connected to an oscilloscope .

10. Application pattern of contraction of heart condition of heart muscle the heart condition is normal or not. reveal irregularities in heart’s rhythm I t is used by doctors to diagnose heart damage

11. Result https://www.idexxvethub.com/interpreting-ecg https://www.idexxvethub.com/interpreting-ecg

12. P hotoplethysmography It determination in which the intensity of light reflected from the skin surface and the red cells below is measured to determine the blood volume of the respective area. There are two types transmission reflectance. Pulse oximiter , Photoplethysmograph - Photoplethysmogram - Wikipedia

13. Uses of PPG Medical devices based on PPG technology are widely used in various applications in the clinical set up. Specific applications include the following: Clinical physiological monitoring Blood  oxygen saturation Blood pressure Cardiac output Heart rate Respiration

14. Uses of PPG (Cont.) Arterial compliance and ageing Venous assessment Endothelial function Microvascular blood flow Vasospastic conditions Autonomic function monitoring Vasomotor function and thermoregulation Blood pressure and heart rate variability Orthostasis Other cardiovascular variability assessments

15. Principle of PPG low-intensity infrared (IR) light. light is more strongly absorbed by blood than the surrounding tissues. The voltage signal from PPG is proportional to the quantity of blood flowing through the blood vessels. A PPG signal has several components including volumetric changes in arterial blood which is associated with cardiac activity. Some major factors affecting the recordings from the PPG are site of measurement and the contact force between the site and the sensor. Blood flow variations mostly occur in the arteries and not in the veins.

16. Result