Irregular patterns of ECG may be caused by either pathological states or at times artefacts. Undesirable presence of artefacts on ECG trace may be due to the following:
- Interference from the power line
- Shifting baseline
- Muscle tremor
Author: John Mulindi
John Mulindi has a background in Instrumentation, and he writes on various topics ranging from Technical, Business to Internet marketing fields. He likes reading, watching football, writing and taking on adventure walks in free time.
Polarizable vs. Non-Polarizable Electrodes
We may categorize electrodes into two possible types albeit theoretically: those that are perfectly polarizable and those that are perfectly non-polarizable. This categorization is based on what happens to an electrode when a current passes between it and the electrolyte. … Read More
What is Bioinstrumentation?
Bioinstrumentation involves the measurement of current or voltage signals from the different parts of the body. The measurement of various physiological signals produced by the body helps in diagnosis and treatment of diseases. In actual fact, when we talk about … Read More
5 Types of Biomedical Instrumentation Systems
We have the following five types of biomedical instrumentation/measurement systems:
- Direct/Indirect
- Invasive/Non-invasive
- Contact/Remote
- Sense/Actuate
- Dynamic/Static
Direct/Indirect
In biomedical instrumentation we may have the sensing system measuring a physiological parameter directly, such as the average blood flow in an artery or … Read More
Flame Atomic Absorption Spectrometry
When a sample is introduced into a flame, only a small fraction of the atoms are in an excited or high energy state [as per the Boltzmann equation] and most atoms of the element remain in the unexcited or ground … Read More
4 Classifications of Biomedical Measurement Instruments
Instruments that are used in biomedical measurements can be grouped into four categories, based on the following:
- Quantity that is sensed
- Principle of transduction
- Organ system
- Clinical medicine specialities
Classification Based on Quantity that is sensed
The techniques employed in … Read More
Principle for Measurement of Partial Pressure of Carbon Dioxide
Common Challenges of EEG Analysis
Though EEG signal detection provides a key indicator for detection of neurological status and disorders, its biomedical application is limited. This is because of the complicated nature of EEG signal and the complexities regarding the interpretation of the signals.
Some … Read More
Key Features of Modern ECG Systems
Modern diagnostic and monitoring ECG acquisition and analysis systems are equipped with modern-day computer technology. ECG monitoring devices constitute an important part of the patient monitoring systems. Patient monitoring systems are used to continuously or intermittently measure the vital signs … Read More
How Spectrofluorimeters are used in Biomedical Measurements
After absorption of light energy, all compounds release some energy as heat; fluorescent compounds represent a special case in which some energy is also given off as light. Spectrofluorimeters are optical devices that measure the amount of light that is … Read More