Normal radiographic heart volume in the neonate. 2. Method of assessment

Dahlström, Anders; Ringertz, Hans

doi:10.1007/bf01601877

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…When possible the X-ray examinations are performed later than 48 h after birth but before 15 days which is in accordance with the HV-method [1]. It can, however, be argued that the statistical differences between the methods were less pronounced than anticipated as: l.The study was performed in departments where HV is normally used.…”

Section: Discussionmentioning

confidence: 99%

“…The X-ray examinations were performed according to the method described in a previous paper [1]. To obtain satisfactory depth measurement of the heart in the lateral projection either a radioopaque gastro-esophageal tube or orally given barium contrast outlined the esophagus.…”

Section: Methodsmentioning

confidence: 99%

“…The heart volume (HV) was calculated according to the previous paper [1] and related to the body weight and expressed in SDs calculated from: heart volume = (9.98 x body weight kg+5.22)5:4.80cm 3. CTR was calculated using the method described by Edwards et al [2] referring to the width of the thorax measured at the inner aspects of the eighth ribs.…”

Section: Methodsmentioning

confidence: 99%

“…This applies if the neonatal patient is examined after the age of 48 hours when the ductus arteriosus should be closed in 90% of normal individuals [3]. On this basis a method for assessment of neonatal heart volume (HV) has been presented [1] including normal values for the volume in the age group 48 h to 15 days related to the weight of the patient.…”

mentioning

confidence: 99%

“…The present study was performed in order to compare the three-dimensional heart volume method [1] and the one-dimensional CTR method in a consecutive patient material. Edwards and colleagues [2] determined the normal range of this ratio with different measurements of the thoracic diameter in a careful study of the neonate.…”

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confidence: 99%

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Normal radiographic heart volume in the neonate

Dahlström¹,

Ringertz²

1985

Pediatr Radiol

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The diagnostic power of the heart volume and the cardiothoracic ratio in congenital heart disease in neonates has been compared. A consecutive series of 130 children with suspicion of heart disease examined radiologically at between 48 h and 15 days of age were followed for 14 +/- 10 months. Of these, 16 (12%) were diagnosed as having congenital heart disease. The number of false positive and negative diagnoses was less for heart volume than for cardiothoracic ratio using +2 SD as limit for pathology. Accuracy, sensitivity and specificity was 84, 75, and 85% respectively for heart volume and 73, 57, and 75% for cardiothoracic ratio. Cases that were false positive with both methods were significantly more often examined between 48 and 72 hours of age indicating that the explanation might be a somewhat late closure of the ductus arteriosus.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Normal radiographic heart volume in the neonate

Dahlström¹,

Ringertz²

1985

Pediatr Radiol

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CV1 Cardiac volume according to body surface area [radiography]

Pettersson

Ringertz

1991

Measurements in Pediatric Radiology

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Blood sampling in very low birth weight infants receiving different levels of intensive care

1988

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Sixty very low birth weight infants (birth weight 560-1450 g) were studied during the first 28 days of life. The infants were classified as group A (n = 19 infants who never required ventilator support), group B (n = 20 infants mechanically ventilated for minor respiratory problems), and group C (n = 21 infants ventilated for respiratory distress syndrome). Diagnostic blood sampling was measured, infants were checked for clinical symptoms and laboratory signs of anaemia 24 h before and after the transfusion of packed red cells. A total of 7998 punctures (average: 4.8 per infant per day) were performed, the mean blood loss due to diagnostic sampling was 50.3 ml/kg per 28 days (range 7-142) for all infants. A high correlation (rs = +0.91) was found between the blood volumes sampled and transfused. In group A, the mean blood loss was 24 ml/kg, and a total of 29 blood transfusions were administered. The most frequent symptoms of anaemia were poor weight gain and apnoeic spells. In group B, the mean blood loss was 60 ml/kg and a total of 97 blood transfusions were administered. In group C, the mean blood loss was 67 ml/kg and a total of 116 blood transfusions were administered. In both groups B and C, poor weight gain, pallor and distended abdomen were the most frequent symptoms of anaemia. Following the blood transfusion, haematocrit rose and blood pressure remained unchanged. The symptoms that responded most favourably to the blood transfusion were: poor weight gain, oxygen requirement, and distended abdomen. The results emphasize the need for miniaturizing laboratory techniques and monitoring blood sampling.

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Normal radiographic heart volume in the neonate. 2. Method of assessment

Cited by 6 publications

References 6 publications

Normal radiographic heart volume in the neonate

Normal radiographic heart volume in the neonate

CV1 Cardiac volume according to body surface area [radiography]

Blood sampling in very low birth weight infants receiving different levels of intensive care

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