The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain crucial data for comparative electrophysiologic analysis. The data were needed to establish the mismatch between heart size and PR interval and QRS duration in mammals. In the waters off the coast of Newfoundland, in two humpback whales (Megaptera novaeangliae) with an estimated weight of 30,000 kg a I-lead ECG was recorded, enabling reliable assessment of P waves and QRS complexes. It was found that both the PR interval (atrioventricular [AV] transmission time) and QRS duration (ventricular excitation) are extremely short for animals of this size. These findings are difficuIt, if not impossible, to explain on the basis of currently accepted el...
Background—On the ECG, the PR interval measures the time taken by an electrical impulse generated in...
The 20-Hz signals of finback whales (Balaenoptera physalus) were analyzed from more than 25 years of...
Scaling can be defined as the adjustment of a structure, a function, or an organ to the size of the ...
The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain cru...
AbstractObjectives. The objective of the study was to record the electrocardiogram (ECG) of a large ...
In the course of our study of the comparative anatomy and physiology of the mammalian heart, it beca...
Although there are many studies describing the behavior/ecology of whales, little is known of their ...
Although the ability of marine mammals to lower heart rates for extended periods when diving is well...
In normal sinus rhythm, the atrioventricular (AV) conduction system introduces an appropriate delay ...
The hearts of marine mammals frequently sustain marked changes in heart rate and vascular resistance...
The mammalian heart has been described as a highly evolutionarily conserved structure and the cardio...
The heart rates of 3 Harbour porpoises (recorded for 26 days) showed individual variation. Electroca...
The most frequently used animal species in experimental cardiac electrophysiology are mice, rabbits,...
Electrocardiograms (ECG) obtained with standard limb leads and augmented unipolar limb leads were re...
As well as transmitting the impulse from the atria to the ventric1es the atrioventricular node has ...
Background—On the ECG, the PR interval measures the time taken by an electrical impulse generated in...
The 20-Hz signals of finback whales (Balaenoptera physalus) were analyzed from more than 25 years of...
Scaling can be defined as the adjustment of a structure, a function, or an organ to the size of the ...
The objective of the study was to record the electrocardiogram (ECG) of a large whale to obtain cru...
AbstractObjectives. The objective of the study was to record the electrocardiogram (ECG) of a large ...
In the course of our study of the comparative anatomy and physiology of the mammalian heart, it beca...
Although there are many studies describing the behavior/ecology of whales, little is known of their ...
Although the ability of marine mammals to lower heart rates for extended periods when diving is well...
In normal sinus rhythm, the atrioventricular (AV) conduction system introduces an appropriate delay ...
The hearts of marine mammals frequently sustain marked changes in heart rate and vascular resistance...
The mammalian heart has been described as a highly evolutionarily conserved structure and the cardio...
The heart rates of 3 Harbour porpoises (recorded for 26 days) showed individual variation. Electroca...
The most frequently used animal species in experimental cardiac electrophysiology are mice, rabbits,...
Electrocardiograms (ECG) obtained with standard limb leads and augmented unipolar limb leads were re...
As well as transmitting the impulse from the atria to the ventric1es the atrioventricular node has ...
Background—On the ECG, the PR interval measures the time taken by an electrical impulse generated in...
The 20-Hz signals of finback whales (Balaenoptera physalus) were analyzed from more than 25 years of...
Scaling can be defined as the adjustment of a structure, a function, or an organ to the size of the ...