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What electrical activity of the heart is indicated by the p wave?
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What does depolarization of the heart mean?
It is a positive wave in the hearts muscle cells, the process of electrical discharge and the flow of electrical activity.
What is indicated when a very deep Q wave is observed in an ECG recording?
The usual cause of Q wave irregularities is a previous heart attack resulting in dead heart muscle tissue or thickening of the heart muscle possibly from insufficient blood flow to the heart. Consult a doctor if you havent already
What is the sinoatrial node?
The sinoatrial node and the atrioventricular node controls the Cardiac Cycle- The Sinoatrial node is often called the Pace maker.The sinoatrial node is located in the wall of the right atrium. The Sinoatrial node emits a wave of electrical activity which reaches both Atria which causes them to contract, the wave of electrical activity is prevented from reaching the ventricles by the atrioventricular septum.Eventually the electrical activity will reach the Atrioventricular node which is situated between the atria.The Atrioventricular node conveys this along specialised muscle fibres called The Bundle of His.The bundle of his fibres release this electrical activity at the apex of the heart which causes both ventricles to contract at the same time.
Why there is a delay between the heart beat in the blood pressure recording and the heart beat in the electrical ECG?
the ECG signal is traveling faster than the pressure recording wave.
What is non q wave heart attack?
No. I had an MI confirmed by elevated enzymes they told me I had a non Q wave heart attack. what is the difference between a regular heart attack and a non q wave heart attack?
What does the ecg wave tracing represent?
Electrical Activity of the Heart
What three major waves of electrical signals appear on the ECGEKG?
* The first wave is called the P wave. It records the electrical activity of the atria (the heart's upper chambers). * The second and largest wave, the QRS wave, records the electrical activity of the ventricles (the heart's lower chambers). * The third wave is the T wave. It records the heart's return to the resting state.
What does depolarization of the heart mean?
It is a positive wave in the hearts muscle cells, the process of electrical discharge and the flow of electrical activity.
Why are the waves in the same direction in an ECG?
The wave direction indicated whether the electrical impulse from the heart is going towards or away from the ECG lead that is being studied.
What does QR stand for?
QRS in the context of cardiovascular health has reference to the electrical pattern of the heart. This is readily seen on an ECG (electrocardiogram). The Q wave is the first downward deflection after a P wave, the R wave is the first upward deflection following a P wave, and the S wave is the downward deflection following the R wave. Taken together the QRS complex represents the electrical activity of the heart during systole: the phase of the heart during which ventricular emptying occurs.
The peaks and valleys of the electrical activity of the heart are?
The first little bump is the P wave it is followed by the QRS Complex that's the big spike and that is followed by the T wave which is a bigger bump than the P wave... normally that's only in a normal Sinus Rhythm
Why is the baseline flat following a U wave?
U is recovery wave. After recovery wave the base line is flat, as their is no electrical activity till P wave appears.
Why is the baseline flat following the U wave?
U is recovery wave. After recovery wave the base line is flat, as their is no electrical activity till P wave appears.
What is it called when there are no QRS waves following p waves?
The QRS complex and the P wave are features of the electrocardiogram, which graphically displays the electrical activity of the heart. The P wave is generated when the atria, or upper chambers of the heart contract. The QRS complex is generated when the ventricles or lower chambers of the heart contract. If there is a P wave but no QRS, the the heart's main pump is not functioning. This would cause death quickly.
What is measured by an EEG?
EEG is Electroencephalograph. In plain English - Electrical Brain wave measurer. It measures electric currents in the brain. There are various currents associated with brain activity, with Greek letter names. eg. Alpha Waves.
What does the U wave represent on an ECG?
is the electrical activity generated by the contraction of the heart muscle
What can disrupt a radio wave?
Magnetism, electrical interference, lightning, solar activity, atmospherics, buildings and structures, other radio waves and nuclear activity.
