How many beats a minute does a heart of a cat(another small animal)?
Posted by adminDec 1
I hear the human heart makes 70 to 80 beats.Is it true that animals have a higher heart beat rate than us?The smaller the animal by size-the higher the rate?Plus.Do animals have more than 4 compartments in their hearts(the human heart being of 4 ones)?Thank you
One comment
Comment by C. Sri Vidya Rajagopalan on December 1, 2009 at 6:12 pm
1) Heart Rate Values:
A cat has a normal heart of 120 beats per minute. Normal range variation is 110 to 140.
A cat can have heart rate up to 160 to 220 beats per minute due to its activity. Treat your pet’s condition as an emergency if her heart rate is outside this range and call your veterinarian.
Average and Normal range of Heart rates (with in brackets) in beats per minute:
Man - 70 (58 to 104)
Cat - 120 (110 to 140)
Cow - 65 (60 to 70)
Dog - 115 (100 to 130)
Guinea Pig - 280 (260 to 400)
Hamster - 450 (300 to 600)
Horse - 44 (23 to 70)
Rabbit - 205 (123 to 304)
Rat - 328 (261 to 600)
2) Heart Champers:
A cat’s heart has four chambers, like humans.
Mammalian and avian (birds) hearts have four chambers – two atria and two ventricles. This is the most efficient system, as deoxygenated and oxygenated bloods are not mixed.
Amphibians and reptiles, by contrast, have a three-chambered heart. The three-chambered heart consists of two atria and one ventricle.
Fish possess the simplest type of true heart – a two-chambered organ composed of one atrium and one ventricle.
3) Human Heart rate and heart rate Maximum:
Heart rate is determined by the number of heartbeats per unit of time, typically expressed as beats per minute (BPM), it can vary with as the body’s need for oxygen changes, such as during exercise or sleep.
Measuring Heart Rate maximum:
The most accurate way of measuring HRmax for an individual is via a cardiac stress test. In such a test, the subject exercises while being monitored by an EKG. During the test, the intensity of exercise is periodically increased (if a treadmill is being used, through increase in speed or slope of the treadmill), or until certain changes in heart function are detected in the EKG, at which point the subject is directed to stop. Typical durations of such a test range from 10 to 20 minutes.
Various formulas are used to estimate individual Maximum Heart Rates, based on age, but maximum heart rates vary significantly between individuals. Even within a single elite sports team, such as Olympic rowers in their 20s, maximum heart rates can vary from 160 to 220. This variation is as large as a 60 or 90 year age gap by the linear equations given below, and indicates the extreme variation about these average figures.
The most common formula encountered, with no indication of standard deviation, is:
HRmax = 220 ? age