Indian Journal of Critical Care Medicine
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LETTER TO THE EDITOR
Year : 2011  |  Volume : 15  |  Issue : 2  |  Page : 142-143

Authors' reply


1 Department of Radiodiagnosis, 167 Military Hospital, Pathankot, India
2 Department of Surgery, 167 Military Hospital, Pathankot, India
3 Department of Anesthesiology, 167 Military Hospital, Pathankot, India

Date of Web Publication16-Jul-2011

Correspondence Address:
Jyotindu Debnath
Department of Radiodiagnosis and Imaging, 167 Military Hospital, Pathankot
India
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PMID: 21814386

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How to cite this article:
Debnath J, Kumar R, Murali Krishna R B, Mathur A. Authors' reply. Indian J Crit Care Med 2011;15:142-3

How to cite this URL:
Debnath J, Kumar R, Murali Krishna R B, Mathur A. Authors' reply. Indian J Crit Care Med [serial online] 2011 [cited 2014 Oct 22];15:142-3. Available from: http://www.ijccm.org/text.asp?2011/15/2/142/83008


Sir

At the outset, we thank the concerned reader [1] for showing keen interest in our article. [2] The issues raised by the interested reader are relevant. Pitfalls of portable chest radiographs in emergency setting are well known. There can be apparent mediastinal shift due to improper patient positioning. However, it is not difficult to diagnose such a condition on a chest radiograph by a radiologist. Moreover, it is hard to overlook patient positioning-related apparent mediastinal shift in a chest computed tomography (CT) scan, particularly in a multidetector CT (MDCT) as in our case. Also, one can confidently differentiate hyperinflation from oligemia leading to increased transradiance of affected pulmonary parenchyma in an MDCT. Features of hyperinflation of left lung are obvious in the given images [Figure 1] and [Figure 2]. If hypoventilation-mediated vasoconstriction and oligemia alone was responsible for the increased transradiance of the left lung parenchyma, some amount of ipsilateral mediastinal shift (due to varying degree of absorption of alveolar air) would have been observed rather than contralateral mediastinal shift.
Figure 1: Axial sections at (a) mid thoracic tracheal, (b) carinal, (c) infracarinal and (d) cardiac levels, respectively. Lung window images depict increased trans-radiance of the lung parenchyma with sparse vascular markings on the left side, suggestive of air trapping. The right lung shows normal CT pattern. Also note mediastinal shift to the right side. Given images also depict presence of ETT in the trachea and right main stem bronchus. TR, trachea; RMB, right main bronchus; LMB, left main bronchus.

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Figure 2: Axial sections (medistinal window) at (a) carinal and (b) infra-carinal levels confirm the presence of ETT in the right main bronchus. Curved coronal (c) reconstruction (mediastinal window) clearly demonstrates the extent of the ETT in theh thoracic trachea and right main bronchus. Volume rendered image (d) further confirms findings noted earlier. TR, trachea; RMB, right main bronchus; LMB, left main bronchus; ETT, endotracheal tube.

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  References Top

1.Panigrahi MK. Contralateral hyperinflation: computed tomography demonstration of an unusual complication of unrecognized endobronchial intubation. Indian J Crit Care Med 2011;15:142.  Back to cited text no. 1
  Medknow Journal  
2.Debnath J, Kumar R, Krishna RB, Mathur A. Contralateral hyperinflation: Computed tomography demonstration of an unusual complication of unrecognized endobronchial intubation. Indian J Crit Care Med 2011;15:52-4.  Back to cited text no. 2
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