[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100618031":3},{"organization":4,"outcomesModule":7,"designInfo":31,"detailedDescription":30,"studyPopulation":30,"armGroups":40,"interventions":53,"overallOfficials":30,"centralContacts":63,"locations":69,"responsibleParty":86,"collaborators":30,"id":90,"slug":30,"hasResults":91,"nctId":92,"briefTitle":93,"officialTitle":94,"acronym":30,"eligibilityCriteria":95,"healthyVolunteers":91,"sex":96,"minAge":97,"maxAge":98,"enrollmentInfo":99,"targetDuration":30,"studyType":102,"phases":103,"briefSummary":105,"conditions":106,"keywords":30,"overallStatus":108,"whyStopped":30,"lastUpdateSubmitDate":109,"lastUpdatePostDateStruct":110,"startDateStruct":113,"completionDateStruct":115,"leadSponsor":117,"locationsCount":118},{"fullName":5,"class":6},"Benha University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":13,"otherOutcomes":30},[9],{"measure":10,"description":11,"timeFrame":12},"Change in Tear Production Measured by Schirmer I Test","Change in tear production measured by the Schirmer I test (without topical anesthesia), calculated as the difference in millimeters (mm) between baseline (pre-procedure, awake) and immediate post-procedure measurement once the patient is responsive (Aldrete score ≥9). Measurements will be performed in a standardized manner by a trained, blinded assessor.","Baseline (30 minutes pre-procedure) to 30 minutes post-procedure",[14,18,22,26],{"measure":15,"description":16,"timeFrame":17},"Immediate Post-Procedure Tear Production (Schirmer I Test)","Tear production measured using the Schirmer I test (mm) immediately after the procedure, once the patient is responsive (Aldrete score ≥9), and compared between study groups.","30-60 minutes after completion of the procedure",{"measure":19,"description":20,"timeFrame":21},"Patient-Reported Dry Eye Symptoms","Dry eye symptoms assessed using a visual analog scale (VAS) ranging from 0 to 10, where 0 = no dry eye symptoms and 10 = worst imaginable dry eye symptoms.","Baseline (pre-procedure), immediate post-procedure, and 12 hours post-procedure",{"measure":23,"description":24,"timeFrame":25},"Incidence of Ocular Adverse Events","Occurrence of ocular adverse events, including corneal abrasion, corneal epithelial defects, conjunctival hyperemia, blurred vision, or severe dry eye requiring ophthalmologic consultation.","From start of procedure to 12 hours post-procedure",{"measure":27,"description":28,"timeFrame":29},"Total Dexmedetomidine Dose","Total cumulative dose of dexmedetomidine administered during the procedure, expressed in micrograms (µg).","During the procedure",null,{"allocation":32,"interventionModel":33,"interventionModelDescription":30,"primaryPurpose":34,"observationalModel":30,"timePerspective":30,"maskingInfo":35},"RANDOMIZED","PARALLEL","PREVENTION",{"masking":36,"maskingDescription":30,"whoMasked":37},"DOUBLE",[38,39],"PARTICIPANT","OUTCOMES_ASSESSOR",[41,47],{"label":42,"type":43,"description":44,"interventionNames":45},"Dexmedetomidine Sedation","EXPERIMENTAL","Participants in this arm will be sedated with intravenous dexmedetomidine during angioplasty performed under local anesthesia. Dexmedetomidine will be administered as a loading dose (if clinically appropriate) followed by a continuous infusion titrated to achieve moderate sedation (RASS -2 to 0). Rescue sedation with small propofol boluses may be used if needed and will be recorded.",[46],"Drug: Dexmedetomidine",{"label":48,"type":49,"description":50,"interventionNames":51},"Standard Sedation","ACTIVE_COMPARATOR","Participants in this arm will receive standard sedation according to routine clinical practice during angioplasty under local anesthesia. Sedation may include intermittent intravenous boluses of midazolam with or without opioid analgesics (e.g., fentanyl) and\u002For small propofol boluses, titrated to achieve moderate sedation (RASS -2 to 0).",[52],"Drug: Sedation with Midazolam, Fentanyl, and Propofol",[54,59],{"type":55,"name":56,"description":57,"armGroupLabels":58,"otherNames":30},"DRUG","Dexmedetomidine","Dexmedetomidine will be administered intravenously for procedural sedation during angioplasty under local anesthesia. A loading dose of 0.4-0.6 µg\u002Fkg may be given over 10 minutes at the discretion of the anesthesiologist, followed by a continuous infusion of 0.2-0.7 µg\u002Fkg\u002Fhour titrated to achieve moderate sedation (RASS -2 to 0). Rescue sedation with small propofol boluses may be used if required and will be documented.",[42],{"type":55,"name":60,"description":61,"armGroupLabels":62,"otherNames":30},"Sedation with Midazolam, Fentanyl, and Propofol","Standard sedation will be provided according to routine clinical practice during angioplasty under local anesthesia. Sedation may include intermittent intravenous boluses of midazolam, with or without opioid analgesics (e.g., fentanyl), and\u002For small propofol boluses, titrated to achieve moderate sedation (RASS -2 to 0). All administered drugs and cumulative doses will be recorded.",[48],[64],{"name":65,"role":66,"phone":67,"phoneExt":30,"email":68},"Samar R Amin, M.D.","CONTACT","+201287793991","samar.rafik@gmail.com",[70],{"facility":71,"status":30,"city":72,"state":73,"zip":74,"country":75,"countryCode":76,"cosmosGeoPoint":77,"geoPoint":82,"contacts":83},"Benha University Hospital","Banhā","Qalyubia Governorate","13511","Egypt","EG",{"type":78,"coordinates":79},"Point",[80,81],31.1842,30.45977,{"lat":81,"lon":80},[84],{"name":85,"role":66,"phone":67,"phoneExt":30,"email":68},"Samar Amin",{"type":87,"investigatorFullName":88,"investigatorTitle":89,"investigatorAffiliation":5,"oldNameTitle":30,"oldOrganization":30},"PRINCIPAL_INVESTIGATOR","Samar Rafik Mohamed Amin","Assistant professor","100618031",false,"NCT07326332","Effect of Dexmedetomidine on Tear Production in Angioplasty Patients","Effect of Dexmedetomidine Sedation on Tear Film in Patients Undergoing Angioplasty Under Local Anesthesia","Inclusion Criteria:\n\n* Scheduled for elective angioplasty (coronary PCI or peripheral angioplasty) under local anesthesia with planned procedural sedation.\n* Able to give informed consent and complete ocular symptom assessments.\n* Baseline Schirmer I ≥1 mm (to exclude complete anatomic lacrimal failure; you may alter this cutoff).\n\nExclusion Criteria:\n\n* Pre-existing moderate\u002Fsevere dry eye disease or Sjögren's syndrome (history or OSDI \\>33).\n* Ocular surgery within prior 3 months or active ocular infection.\n* Contact lens use within 24 hours before baseline.\n* Chronic systemic medications known to substantially alter lacrimation (recent anticholinergics, high-dose tricyclics) unless stable and documented.\n* Known allergy to dexmedetomidine, midazolam, fentanyl, or propofol.\n* Significant bradycardia (HR \\\u003C50) or high-degree AV block without pacemaker.\n* Pregnancy or breastfeeding.\n* Any condition making study participation or follow-up impossible.","ALL","18 Years","65 Years",{"count":100,"type":101},52,"ESTIMATED","INTERVENTIONAL",[104],"NA","During medical procedures performed under local anesthesia with sedation, such as angioplasty, the eyes may become dry because normal blinking and tear production can be reduced. Dexmedetomidine is a commonly used sedative that provides comfort and pain relief while allowing patients to breathe on their own. However, there is limited information about how dexmedetomidine affects tear production and eye comfort after procedures.\n\nThis study aims to evaluate whether sedation with dexmedetomidine affects tear production compared with standard sedative medications used during angioplasty. Adult patients undergoing angioplasty under local anesthesia will be randomly assigned to receive either dexmedetomidine sedation or standard sedation. Tear production will be measured using the Schirmer test before the procedure, shortly after the procedure, and 12 hours later. Patients will also be asked about eye dryness or discomfort, and any eye-related or sedation-related side effects will be recorded.\n\nThe results of this study may help improve eye safety and comfort in patients receiving sedation during angioplasty and guide the selection of sedative medications in clinical practice.",[107],"Tear Film Alteration","NOT_YET_RECRUITING","2026-01-02",{"date":111,"type":112},"2026-01-08","ACTUAL",{"date":114,"type":101},"2026-01-01",{"date":116,"type":101},"2026-06-20",{"name":5,"class":6},1]