Diaphragmatic paralysis other diagnostic studies: Difference between revisions
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* MIP < −80 cmH2O exclude diaphragmatic paralysis <ref name="pmid27803970">{{cite journal |vauthors=Koo P, Oyieng'o DO, Gartman EJ, Sethi JM, Eaton CB, McCool FD |title=The Maximal Expiratory-to-Inspiratory Pressure Ratio and Supine Vital Capacity as Screening Tests for Diaphragm Dysfunction |journal=Lung |volume=195 |issue=1 |pages=29–35 |date=February 2017 |pmid=27803970 |doi=10.1007/s00408-016-9959-z |url= |author=}}</ref> | * MIP < −80 cmH2O exclude diaphragmatic paralysis <ref name="pmid27803970">{{cite journal |vauthors=Koo P, Oyieng'o DO, Gartman EJ, Sethi JM, Eaton CB, McCool FD |title=The Maximal Expiratory-to-Inspiratory Pressure Ratio and Supine Vital Capacity as Screening Tests for Diaphragm Dysfunction |journal=Lung |volume=195 |issue=1 |pages=29–35 |date=February 2017 |pmid=27803970 |doi=10.1007/s00408-016-9959-z |url= |author=}}</ref> | ||
* MIP can be decreased: | * MIP can be decreased: | ||
** Less than 60% of the predicted value in unilateral diaphragmatic paralysis<ref name=" | ** Less than 60% of the predicted value in unilateral diaphragmatic paralysis<ref name="pmid3202460" /> | ||
** Less than 30% of the predicted value in bilateral diaphragmatic paralysis | ** Less than 30% of the predicted value in bilateral diaphragmatic paralysis | ||
Revision as of 15:56, 21 February 2018
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:
Overview
There are no other diagnostic studies associated with [disease name].
OR
[Diagnostic study] may be helpful in the diagnosis of [disease name]. Findings suggestive of/diagnostic of [disease name] include [finding 1], [finding 2], and [finding 3].
OR
Other diagnostic studies for [disease name] include [diagnostic study 1], which demonstrates [finding 1], [finding 2], and [finding 3], and [diagnostic study 2], which demonstrates [finding 1], [finding 2], and [finding 3].
Other Diagnostic Studies
Pulmonary function test:
- Spirometry in the supine and sitting positions may be helpful in the diagnosis of diaphragmatic paralysis. Findings suggestive of diaphragmatic paralysis include:
- Unilateral diaphragmatic paralysis:
- Bilateral diaphragmatic paralysis:
Maximal inspiratory pressure (MIP) :
- MIP < −80 cmH2O exclude diaphragmatic paralysis [5]
- MIP can be decreased:
- Less than 60% of the predicted value in unilateral diaphragmatic paralysis[3]
- Less than 30% of the predicted value in bilateral diaphragmatic paralysis
- Maximal expiratory pressure (MEP) is normal.
- MEP/MIP >2 is supportive of thediagnosis of diaphragmatic paralysis.
Electromyography
- It is not usullay done because it is very invasive.
- Electromyography ( EMG) is not very useful in unilateral diaphragmatic paralysis.
- Electromyography ( EMG) in bilateral diaphragmatic paralysis may reveal neuropathic or myopathic pathern besed on the eyiology. [6]
- Absence of an EMG signal is seen in complete transection of the phrenic nerves
- [Diagnostic study] may be helpful in the diagnosis of [disease name]. Findings suggestive of/diagnostic of [disease name] include:
- [Finding 1]
- [Finding 2]
- [Finding 3]
- Other diagnostic studies for [disease name] include:
- [Diagnostic study 1], which demonstrates:
- [Finding 1]
- [Finding 2]
- [Finding 3]
- [Diagnostic study 2], which demonstrates:
- [Finding 1]
- [Finding 2]
- [Finding 3]
- [Diagnostic study 1], which demonstrates:
References
- ↑ Lisboa C, Paré PD, Pertuzé J, Contreras G, Moreno R, Guillemi S, Cruz E (September 1986). "Inspiratory muscle function in unilateral diaphragmatic paralysis". Am. Rev. Respir. Dis. 134 (3): 488–92. doi:10.1164/arrd.1986.134.3.488. PMID 3752705.
- ↑ Lisboa C, Paré PD, Pertuzé J, Contreras G, Moreno R, Guillemi S, Cruz E (September 1986). "Inspiratory muscle function in unilateral diaphragmatic paralysis". Am. Rev. Respir. Dis. 134 (3): 488–92. doi:10.1164/arrd.1986.134.3.488. PMID 3752705.
- ↑ 3.0 3.1 Laroche CM, Carroll N, Moxham J, Green M (October 1988). "Clinical significance of severe isolated diaphragm weakness". Am. Rev. Respir. Dis. 138 (4): 862–6. doi:10.1164/ajrccm/138.4.862. PMID 3202460.
- ↑ Mier-Jedrzejowicz A, Brophy C, Moxham J, Green M (April 1988). "Assessment of diaphragm weakness". Am. Rev. Respir. Dis. 137 (4): 877–83. doi:10.1164/ajrccm/137.4.877. PMID 3354995.
- ↑ Koo P, Oyieng'o DO, Gartman EJ, Sethi JM, Eaton CB, McCool FD (February 2017). "The Maximal Expiratory-to-Inspiratory Pressure Ratio and Supine Vital Capacity as Screening Tests for Diaphragm Dysfunction". Lung. 195 (1): 29–35. doi:10.1007/s00408-016-9959-z. PMID 27803970.
- ↑ Kumar N, Folger WN, Bolton CF (December 2004). "Dyspnea as the predominant manifestation of bilateral phrenic neuropathy". Mayo Clin. Proc. 79 (12): 1563–5. doi:10.4065/79.12.1563. PMID 15595343.