So is this an irregular heart beat
defibrillators
This is called sinus arrhythmia. It is a normal phenomenon where the heart rate increases during inhalation and decreases during exhalation. It is more commonly seen in younger individuals and can be a normal finding.
Heart rate of lions ranged from 42 to 76 beats per minute (bpm). Heart rate of tigers ranged from 56 to 97 bpm. In both species, the most common rhythm detected was normal sinus rhythm followed by sinus arrhythmia; wandering pacemaker was also observed with normal sinus rhythm or sinus arrhythmia.
In comparison to normal sinus pulse, an arrythmia is an abnormality in the operation of the heart, translating into an abnormal pulse.
sinus bradycardia
sinus arrhythmia
This is an irregular cardiac rhythm due to a variation in the sinus rhythm -- the heartbeat usually increases during inhalation and decreases during exhalation. This condition is common in children and young adults.
Carotid sinus massage will slow the heart rate during episodes of atrial flutter, fibrillation, and some tachycardias. It has been known to stop the arrhythmia completely.
Cardiac arrhythmia refers to abnormal heart rhythm, as measured with an ECG. A "normal" rhythms is called a "Sinus Rhythm", as it originates in the Sinoatrial node of the heart. Any rhythm that originates elsewhere, or deviates from what is considered "normal" is an arrhythmia. There are many types of arrhythmia. On a cardiac monitor, if we see beats that are abnormal, we call the ectopy, or ectopic beats. But as far as a "term for arrhythmia"... that's the term: Arrhythmia.
There is no such thing as a normal sinus respiration. I assume you meant, normal sinus rhythm. (seeing that arrhythmia deals with the heart and not the lungs). An intervention will depend solely on the type of arrhythmia (e.g. atrial, ventricular). Cardioversion is usually done. Cardioversion is either the administration of antiarrhythimics such as amiodarone or sending synchronized electrical currents to the heart. Defibrillation is only done when Ventricular Tachycardia (without a pulse) or Ventricular Fibrillation occurs.
The RR interval of ECG vary during normal respiration because of the sinus arrhythmia.
Barry William Hyndman has written: 'Digital simulation of the human cardiovascular system and its use in the study of sinus arrhythmia'