Haller Index

The Haller Index HI the standard metric for the severity of pectus excavatum is dependent on width and does not assess the depth of the defect. Haller index Last updated January 08 2020 A CT scan showing a 358 index.

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Although a huge variety of indexes have been described in the literature only few authors have validated some of them.

Haller index. Haller index HI has emerged as the predominant way to identify patients for which surgical treatment is most appropriate. It would also be interesting for Birkemeier et al. They developed this calculation in Baltimore Maryland.

Sternal tilt degree was measured for the evaluation of the asymmetries of the chest wall deformities and was defined as the angle generated by the sternum and the line connecting the bilateral. The Haller index was defined as the ratio between the longest transverse length and the shortest vertical length of the chest cage in axial CT scans. J Pediatr Surg 2015.

The Haller Index proved to be effective in what the surgeons were looking for. Multiple studies demonstrated considerable improvements in the malformations depth and Haller Index with vacuum bell use. Index for patients and control subjects with quiet breathing.

Lietman 1 is a mathematical relationship that exists in a human chest section observed with a CT scanIt is defined as the ratio of the transverse diameter the horizontal distance of the inside of the ribcage and the anteroposterior. The Haller index HI also known as the pectus index is a simple mathematical way to assess and describe the chest cage on CT of the thorax and is used in the detection of pectus excavatum as well as preoperative and postoperative assessment 15. Then two distances are measured.

1 to include a table or a chart contain - ing the measurements of the chest dimen-sions because the Haller index decreases with inspiration compared with. The Haller index is a ratio of thoracic width and height measured from an axial CT image and used to describe the internal dimensions of the thoracic cage. Therefore we performed a diagnostic analysis to assess the ability of HI to separate patients with pectus excavatum from healthy controls compared to a novel index.

Comparatively the extensive use of Nuss procedures for correcting sunken chest raised the frequency of surgical complications. The Haller index created in 1987 by J. J Pediatr Surg 2020.

The Haller index is calculated by dividing the transverse diameter of the chest by the anterior-posterior distance on CT of the chest. The Haller index is an accepted CT method for evaluating thoracic dimensions in patients with pectus excavatum. The purpose of this study is to establish age- and gender-related norms for the Haller index in childhood.

Kramer and Steven A. The results for the overall group as well as for the pa-tients with a Haller index score in the first quartile 51aregiven Vol. 2004 this is only at one undefined vertebral level in the thorax.

The Haller index was calculated in a standard fashion Fig. The Haller Index cut-off point of 325 used for surgical indication for example has never been validated by other authors even though a great deal of chest wall malformation experts use it routinely in their practice. Although the Haller index for a normal thorax has been established Haller et al.

Also they confirmed that this alternate method of treatment is both safe and effective. Recurrence of pectus excavatum in long-term follow-up after the Nuss procedure in young children based on the radiographic Haller index. Using CT as the reference standard the sensitivity specificity and accuracy of radiographic Haller index.

The Haller index correlates well with the correction index in pectus patients with standard chest wall dimensions but it is quite discrepant in the nonstandard chest. The correction index CI requires drawing a horizontal line across the anterior spine. A normal chest ratio is approximately 25 cm and an index over 32 cm is often defined as severe and eligible for the Nuss.

The Haller index is the ratio between the transverse chest diameter measurement from one side of the ribcage to the other and the anteroposterior diameter measurement from the breastbone to the spinal cord of the chest. Haller index values were dichotomized into positive 32 and negative 32 cases. It was created in 1987 by Jacob Alexander Haller Jr who was an American pediatric surgeon all together with Sandra S.

Under this premise patients with higher HI values indicating a more severe chest deformity are more likely to pursue andor benefit from surgery. Sacco Casamassima MG Papandria D Goldstein SD et al. We retrospectively reviewed 574 consecutive chest CT examinations M285 F289 performed at our institution from August 2001 through March 2002.

With a previous history of asthma. We compared these values with the Haller index HI the transverse diameter of the chest. The mean Haller index score was 47 with a median of 43 and a range of 22 to 119.

Contemporary management of recurrent pectus excavatum. Kuyama H Uemura S Yoshida A. The minimum distance between the posterior sternum and the anterior spine as is used for the HI and the maximum distance between the line placed on the anterior.

The sternum index SI was calculated according to the anterioposterior diameter of the chest cavity from the sternum to the spine divided by the patients height SI anterioposterior diameter of the chest cavitythe patients height 100.

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