Analysis of 86 Dacryoliths at the University Hospital Ostrava
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|ClinicalTrials.gov Identifier: NCT01826734|
Recruitment Status : Completed
First Posted : April 8, 2013
Last Update Posted : September 5, 2016
Background Because dacryoliths occur at low frequency, few studies have focused on their composition.
The investigators aimed to present findings from morphological, chemical, and mineralogic analysis of 86 dacryoliths.
Methods The team studied 86 dacryoliths obtained during 832 dacryocystorhinostomies (DCR) performed for postsaccal obstruction. The samples were analyzed with atomic infrared spectrometry (80 samples), amino acid analysis (17 samples), scanning electron microscopy, and an electron microprobe with an energy dispersive detector (7 samples).
|Condition or disease|
|Lacrimal Apparatus Diseases Lacrimal Duct Obstruction|
|Study Type :||Observational|
|Actual Enrollment :||86 participants|
|Official Title:||Lacrimal Sac Dacryoliths (86 Samples): Chemical and Mineralogic Analyses|
|Study Start Date :||January 1994|
|Actual Primary Completion Date :||December 2012|
|Actual Study Completion Date :||January 2013|
Patients with dacryolits
The study population consisted of patients following a dacryolit extraction procedure. The extraction procedure was not a part of this study.
- The percentage of individual types of amino-acids in the dacryolits [ Time Frame: 18 months ]The obtained dacryolist were assessed physically and chemically. The authors will assess the obtained material for the presence of common amino acids.
- The percentage individual elements in the dacryolits [ Time Frame: 18 months ]The obtained biological material will be assessed as regards to its elemental composition.
Biospecimen Retention: Samples Without DNA
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Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01826734
|University Hospital Ostrava|
|Ostrava, Moravian-Silesian Region, Czech Republic, 70800|
|Principal Investigator:||Pavel Kominek, doc,MD,PhD,MBA||University Hospital Ostrava|