ECG Waveforms
This waveform represents the electrical depolarization of the atria.
What is the P wave.
This wave represents the electrical depolarization of the ventricles, which leads to ventricular contraction.
What is the QRS complex
Where is the natural pacemaker of the heart, what is its name and what is the normal rate?
What is the right atrium, the Sinoatrial Node (SA node) and 60-100bpm.
If there is a long PR interval this signifies that there is a __________________.
What is a Heart Block.
This rhythm is characterized by a rapid, irregular heartbeat with no discernible P waves and a "fibrillatory" baseline.
What is Atrial Fibrillation
This waveform represents the electrical repolarization of the ventricles
What is the T wave
The atrial repolarization wave is usually hidden within the _______________________.
What is the QRS complex.
This pathway is responsible for carrying the electrical pulses to the left and right Ventricles.
What is the purkinje Fibers.
In this rhythm, the QRS complex is absent, and the heart is electrically silent with no organized electrical activity in the ventricles, often due to severe ischemia. What actions would the nurse take with this rhythm?
What is Asystole and CPR
This rhythm occurs when the electrical impulse originates from the atria, but the heart rate is excessively slow, typically below 60 beats per minute. Also in a Medical Emergency what medication would be given?
What is Sinus Bradycardia, Atropine
This segment, located between the S wave and the T wave, represents the period when the ventricles are fully depolarized and are in the process of contracting.
What is the ST segment
The length of this interval reflects the time it takes for the electrical impulse to travel from the SA node through the AV node and into the ventricles.
What is the PR interval
The ___________node is known as the gate way to the ventricles and is also considered to be the backup pacemaker of the heart. It is responsible for _____________ the electrical signal for a split ___________ before the electrical impulse reaches the ___________________.
What is atrioventricular, stopping, second (0.1 seconds), bundle of His.
This rhythm presents with a rapid, wide QRS complex and no P waves, indicating a rhythm originating from the ventricles. Normally this rhythm rate is less than 150bpm.
What is Ventricular Tachycardia (VT)
A patient ECG was noted to have a ST segment of 0.6mV, what does this signify.
What is a STEMI
This interval is the time it takes for the entire ventricular depolarization and repolarization to occur.
What is the QT interval.
How many small boxes equal 1s and how many big boxes equal a 6s strip ?
What is 5 small boxes and 30 big boxes.
To depolarize means to _______________ to repolarize means to ___________________.
What is contract and relax.
This rhythm looks like a normal sinus rythm but periodically a p wave attached to no QRS complex occurs.
What is Mobitz 2 ( hays)
This waveform signifies that the atria and ventricles are beating independently. What would be the treatment of this Waveform?
What is Third-degree AV Block (Complete Block), Placement of a pacemaker.
The PR interval should never be more than __________small boxes, the QRS complex should never be wider than ____________ small boxes and the ST segment should never be taller than __________ small boxes.
What is 532.
What is time, 0.04seconds, millivolts ,0.1mV
Electrical impulse triggers depolarization of the ventricles and is represented by this number on a blood pressure reading.
What is the systolic blood pressure.
A patient enters the emergency room with a ECG reading of a wide QRS complex and no P waves, indicating a rhythm originating from the ventricles. This rhythm rate is 180bpm. The patient stated no symptoms. What interventions should be performed to help this patient?
Vagal Manuvers ( bearing down, blowing through a straw and/or Carotid massages.
A patient enters the emergency room with a ECG reading of a wide QRS complex and no P waves, indicating a rhythm originating from the ventricles. This rhythm rate is 180bpm. The patient stated dizziness, Chest pain, and is sweating. What interventions should be performed to help this patient?
Medicate: (beta-blockers, calcium channel blockers, or adenosine)
and/or
Cardioversion