The weight and thickness of the two ventricular walls in the newborn dog heart

Latimer, Homer B.

doi:10.1002/ar.1091520214

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…study, it appears that the heart ventricles grow similarly in children with hydrocephalus and in normal children, and that the presence of a cerebro-cardiac shunt, though presenting frequent embolic/thrombotic lesions in the lungs, does not appear, at least over a period of a few (less than five) years, to induce changes in the heart suggesting the development of significant pulmonary hypertension. The postnatal changes in weight of the ventricles in this study show the accelerated increase in growth of the left heart after birth as in our own previous study (Emery and Mithal, 1961) and in the older literature (Miller, 1883;Falk, 1901) and in dogs (Latimer, 1965). The apparent actual diminution in weight of the right ventricle suggested by Keen (1955) and Recavarren and Arias-Stella (1964) is probably due to an unfortunate selection of material and method of study.…”

Section: Resultssupporting

confidence: 84%

Weights of heart ventricles in children with hydrocephalus treated with ventriculo-caval shunts.

Emery¹,

Mahgrefte²

1969

Heart

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Section: Resultssupporting

confidence: 84%

Weights of heart ventricles in children with hydrocephalus treated with ventriculo-caval shunts.

Emery¹,

Mahgrefte²

1969

Heart

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“…The closing of the ductus arteriosus after birth results in only smaller circulation being pumped by the right ventricle, so the systemic load moves to the left ventricle. This process is seen by increasing the wall thickness of the left ventricle faster than the right ventricle (Latimer 1965). The left being thicker, is more powerful to pump the blood with more force and more rapidly.…”

Section: Discussionmentioning

confidence: 99%

Morphological Study of the Heart of the Indonesian Short-Nosed Fruit Bat (Cynopterus titthaecheilus)

et al. 2020

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Abstract. Rahma A, Hanadhita D, Prawira AY, Kasmono S, Maheshwari H, Satyaningtijas AS, Agungpriyono S. 2020. Morphological study of the heart of the Indonesian short-nosed fruit bat (Cynopterus titthaecheilus Temminck, 1825). Biodiversitas 21: 5094-5101. The energy demand of an animal becomes an important factor that affects the adaptation of cardiac or heart anatomy. As the largest Cynopterus bat in Indonesia, Cynopterus titthaecheilus (Temminck, 1825) is one of the flying mammals that need a lot of energy to accommodate its flying activity. This study aims to acknowledge the anatomical adaptation of the heart in C.titthaecheilus, which includes the weight ratio of the heart, heart structure, and primary blood vessel branches. This study conducted of 10 juvenile C. titthaecheilus (56.15±13.43 g), 13 females (74.38±10.34 g), and 18 males (73.27±13.54 g). Bats ware killed by ketamine overdoses, then the thoracic cavity was opened and the heart was removed from the thoracic cavity for observation. The results of this study revealed that the ratio of heart mass to body mass of adult female C. titthaecheilus was 0.014, male adult C. titthaecheilus was 0.015 and juvenile C. titthaecheilus was 0.015. The heart-shaped was an oval, located in the thoracic cavity, tilted to the left. On the other hand, the heart structure of C. titthaecheilus consisted of a thicker left ventricle compared to the right ventricle, but the musculi pectinati, musculus papillaris, and trabecula septomarginalis were well developed on the right side of the heart compared to the left side. Subsequently, the branches of the primary blood vessels in the heart consisted of an aortae ascendens, three arteria pulmonalis dextra and one arteria pulmonalis sinistra, a vena pulmonalis, the vena cava anterior dextra et sinistra, and a single vena cava posterior. In addition, the conus arteriosus, which is an enlarged space of the pulmonary artery, was observed in a large size. Based on this study, it was concluded that the heart structure of C. titthaecheilus was very important in supporting their ability to fly.

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“…in a study of 21 canine foetal pups, found that the right ventricle exceeded that of the left ventricle at the midventricular wall level. Latimer (1965), however, found that in newborn puppies, the wall of the left ventricle was slightly thicker than that of the right ventricle and the ratio of the thickness of the left to the right ventricular wall was 1.036. Matthiesen and Deegen (1976) on the equine foetal and newborn heart, reported that the ratio of left to right ventricular wall thickness changed from 1.4 (five to eight months of foetal age) to 1.5 (perinatal period) and to 2.2 (over six months of newborn age).…”

Section: Equation*mentioning

confidence: 92%

“…This finding may result from the slower growth of the atria than the ventricles. The relative thickness of the walls of the left and right ventricles in prenatal and newborn dogs has been studied by Williams, Powers and Hamlin (1979) and Latimer (1965). Williams et a1 (1979).…”

Section: Equation*mentioning

confidence: 99%

A morphometric study of foetal and newborn cardiac growth in the horse

Motomura¹,

Yasuda²,

Too³

1988

Equine Veterinary Journal

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A morphometric study of hearts in 81 equine foetuses, ranging in age from 190 to 330 days of foetal age, and in 26 newborn foals is reported. The mean weight, external dimensions, ventricular wall thickness and circumference of the atrio-ventricular orifice were measured. Features of the main associated vessels of the heart were also recorded. All cardiac measurements of foetuses increased linearly throughout the latter half of pregnancy and were highly correlated with foetal age. This linear growth pattern was also found in the parameters of the associated arterial trunks. The ratio of the right ventricular weight to the total ventricular weight in the equine foetuses increased gradually from 0.27 (Day 190) to 0.34 (full term), but in newborn foals, this ratio began to decrease soon after birth, declining from 0.32 to 0.28 by 11 days of age. The interventricular septum was thickest followed by the right ventricular wall, and the left ventricular wall was thinnest during the period of gestation studied. The right ventricle was 3.2 per cent to 31.5 per cent thicker than the left ventricle.

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The weight and thickness of the two ventricular walls in the newborn dog heart

Cited by 9 publications

References 11 publications

Weights of heart ventricles in children with hydrocephalus treated with ventriculo-caval shunts.

Weights of heart ventricles in children with hydrocephalus treated with ventriculo-caval shunts.

Morphological Study of the Heart of the Indonesian Short-Nosed Fruit Bat (Cynopterus titthaecheilus)

A morphometric study of foetal and newborn cardiac growth in the horse

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