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  1. Article ; Online: Obstructive sleep Apnea's association with the cervical spine abnormalities, posture, and pain: a systematic review.

    Pham, Tri / Lin, Chung-Kuang / Leek, Dustin / Chandrashekhar, Ravindra / Annaswamy, Thiru M

    Sleep medicine

    2020  Volume 75, Page(s) 468–476

    Abstract: Objectives: While obstructive sleep apnea (OSA) is associated with several chronic health conditions such as hypertension, obesity, and chronic hypoxia, there is limited information on its association with neuromuscular and spinal pathologies that may ... ...

    Abstract Objectives: While obstructive sleep apnea (OSA) is associated with several chronic health conditions such as hypertension, obesity, and chronic hypoxia, there is limited information on its association with neuromuscular and spinal pathologies that may be of interest to a musculoskeletal (MSK) medicine or pain management clinician. The objective of this study was to perform a systematic literature review to examine the association between OSA and cervical spine pathologies, postural changes, and pain.
    Design: We systematically reviewed PubMed and Embase databases up to 4/15/2019. We included studies that explored associations between OSA and a) pain, b) postural characteristics or changes, or c) cervical spine morphology. Systematic reviews, meta-analysis, randomized control trials, cohort studies, and case-control studies were included. Case reports, narrative reviews or expert opinion papers were excluded. From the articles that met selection criteria, information regarding type, direction and magnitude of such associations was extracted. The OSA-pain association studies were further divided into 3 subgroups: neuropathic, temporomandibular, and chronic pain.
    Results: 21 articles that met our study criteria were selected for this review. Two studies were on cervical spine pathologies, eight on postural changes, and eleven on pain associated with OSA. Exploring the association between OSA and cervical spine pathologies, postural changes, and pain in this systematic review we found: (1) Cervical spine lesions, fusions, and abnormalities that reduce retropharyngeal space are associated with OSA, likely by way of worsening posture and decreasing range of motion. (2) Head extension and anteriorization are associated with OSA likely as a compensatory mechanism. Extension may improve airway function, while anteriorization helps to maintain visual sense. (3) Head-of-bed-elevation may improve OSA symptoms and can possibly supplement other conservative treatment measures. (4) Neuropathic pain is associated with OSA, likely by way of inflammatory pathways. (5) Oral appliance use (eg mandibular advancement/protruding device) in OSA likely contributes to transient temporomandibular pain. (6) There is little association between OSA and chronic pain prevalence. (7) Increased pain intensity and decreased pain tolerance are somewhat associated with OSA, likely by way of hypoxemia and sleep fragmentation.
    Conclusions: Clinicians in MSK and pain medicine need to consider these associations and consider obtaining imaging studies and/or making referrals for management of their OSA to better provide appropriate care to these patients.
    MeSH term(s) Cervical Vertebrae ; Chronic Pain ; Humans ; Posture ; Respiratory System ; Sleep Apnea, Obstructive
    Language English
    Publishing date 2020-09-10
    Publishing country Netherlands
    Document type Journal Article ; Meta-Analysis ; Systematic Review
    ZDB-ID 2012041-2
    ISSN 1878-5506 ; 1389-9457
    ISSN (online) 1878-5506
    ISSN 1389-9457
    DOI 10.1016/j.sleep.2020.09.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Changes in 3D nasal cavity volume after biomimetic oral appliance therapy in adults.

    Singh, G Dave / Heit, Tammarie / Preble, Derek / Chandrashekhar, Ravindra

    Cranio : the journal of craniomandibular practice

    2015  Volume 34, Issue 1, Page(s) 6–12

    Language English
    Publishing date 2015-01-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 632570-1
    ISSN 2151-0903 ; 0886-9634
    ISSN (online) 2151-0903
    ISSN 0886-9634
    DOI 10.1179/2151090315Y.0000000001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Midfacial development in adult obstructive sleep apnea.

    Singh, G Dave / Wendling, Sue / Chandrashekhar, Ravindra

    Dentistry today

    2011  Volume 30, Issue 7, Page(s) 124–127

    MeSH term(s) Adult ; Cone-Beam Computed Tomography ; Humans ; Male ; Mandibular Advancement/instrumentation ; Maxillofacial Development ; Nasal Obstruction/diagnostic imaging ; Occlusal Splints ; Palatal Expansion Technique/instrumentation ; Pharynx/diagnostic imaging ; Sleep Apnea, Obstructive/physiopathology ; Sleep Apnea, Obstructive/therapy
    Language English
    Publishing date 2011-07
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 1204390-4
    ISSN 8750-2186
    ISSN 8750-2186
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Conductive keratoplasty to treat complications of LASIK and photorefractive keratectomy.

    Hersh, Peter S / Fry, Kristen L / Chandrashekhar, Ravindra / Fikaris, Desipina S

    Ophthalmology

    2005  Volume 112, Issue 11, Page(s) 1941–1947

    Abstract: Purpose: To assess the outcomes of conductive keratoplasty (CK) for patients with complications related to LASIK or photorefractive keratectomy (PRK).: Design: Retrospective, noncomparative, interventional case series.: Participants: Sixteen eyes ... ...

    Abstract Purpose: To assess the outcomes of conductive keratoplasty (CK) for patients with complications related to LASIK or photorefractive keratectomy (PRK).
    Design: Retrospective, noncomparative, interventional case series.
    Participants: Sixteen eyes of 15 patients were treated using CK after complications of initial LASIK or PRK surgeries. Five cases are described in detail.
    Intervention: Rehabilitative CK was performed.
    Main outcome measures: Uncorrected visual acuity (UCVA) and best spectacle-corrected visual acuity (BSCVA), refractive error, keratometry, topography analysis, and a subjective assessment of visual quality.
    Results: After CK treatment, there was a mean improvement in UCVA of 2 lines; 1 eye lost >1 line of UCVA. Best-corrected visual acuity improved or remained the same in 12 of 15 eyes; no eyes lost >1 line of BSCVA. There was a mean reduction in astigmatism of 54%. Videokeratography generally demonstrated improved quality of the corneal optical surface, and patients reported a reduction in optical symptoms such as glare and halo.
    Conclusions: Conductive keratoplasty may give improved corneal optics and vision in patients with complications of LASIK or PRK. This application of CK offers an alternative in cases in which further flap manipulation or laser treatments are contraindicated.
    MeSH term(s) Adult ; Aged ; Astigmatism/etiology ; Astigmatism/physiopathology ; Astigmatism/surgery ; Cornea/physiopathology ; Cornea/surgery ; Corneal Topography ; Electrocoagulation/methods ; Female ; Humans ; Hyperopia/etiology ; Hyperopia/physiopathology ; Hyperopia/surgery ; Keratomileusis, Laser In Situ/adverse effects ; Lasers, Excimer ; Male ; Middle Aged ; Nomograms ; Photorefractive Keratectomy/adverse effects ; Refraction, Ocular ; Retrospective Studies ; Visual Acuity/physiology
    Language English
    Publishing date 2005-11
    Publishing country United States
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 392083-5
    ISSN 1549-4713 ; 0161-6420
    ISSN (online) 1549-4713
    ISSN 0161-6420
    DOI 10.1016/j.ophtha.2005.05.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Central retinal vein occlusion in patients treated with long-term warfarin sodium (Coumadin) for anticoagulation.

    Mruthyunjaya, Prithvi / Wirostko, William J / Chandrashekhar, Ravindra / Stinnett, Sandra / Lai, James C / Deramo, Vincent / Tang, Johnny / Dev, Sundeep / Postel, Eric A / Connor, Thomas B / Fekrat, Sharon

    Retina (Philadelphia, Pa.)

    2006  Volume 26, Issue 3, Page(s) 285–291

    Abstract: Purpose: To describe the clinical features of persons who developed central retinal vein occlusion (CVO) while being treated with Coumadin for chronic anticoagulation.: Methods: In a retrospective, comparative, noninterventional case series of ... ...

    Abstract Purpose: To describe the clinical features of persons who developed central retinal vein occlusion (CVO) while being treated with Coumadin for chronic anticoagulation.
    Methods: In a retrospective, comparative, noninterventional case series of patients diagnosed with CVO while being treated with Coumadin as a systemic anticoagulant, visual and anatomical outcomes were compared with those for a cohort of patients diagnosed with CVO who were not treated with any systemic anticoagulation.
    Results: Fourteen eyes of 14 patients treated with Coumadin were identified. At presentation, the median international normalization ratio (INR) was 2.20 (range, 1.3-5.0). Eight patients (57%) had a therapeutic INR at the time of CVO. Their visual acuity and perfusion status were similar to those of patients with subtherapeutic INR. At the last follow-up (median, 16 months), visual acuity and perfusion status of the group of 14 eyes were similar to baseline findings (P = 0.62). Clinical features and outcomes were similar to those for a cohort of patients with CVO who were not being treated with systemic anticoagulation.
    Conclusion: CVO can occur in patients being treated with Coumadin for systemic anticoagulation. Final visual acuity and perfusion status were similar to those in a cohort of patients with CVO who were not treated with Coumadin. Although visual acuity is unaffected, ensuring that the INR for these patients remains in the therapeutic range may be important to help prevent secondary systemic thrombotic and embolic disease.
    MeSH term(s) Aged ; Aged, 80 and over ; Anticoagulants/adverse effects ; Blood Coagulation/drug effects ; Eye/blood supply ; Female ; Humans ; International Normalized Ratio ; Male ; Middle Aged ; Retinal Vein Occlusion/chemically induced ; Retinal Vessels/physiology ; Retrospective Studies ; Thrombosis/drug therapy ; Visual Acuity ; Warfarin/adverse effects
    Chemical Substances Anticoagulants ; Warfarin (5Q7ZVV76EI)
    Language English
    Publishing date 2006-02-23
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 603192-4
    ISSN 1539-2864 ; 0275-004X
    ISSN (online) 1539-2864
    ISSN 0275-004X
    DOI 10.1097/00006982-200603000-00006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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