Clinical trials: Surgical Positioning
Hemodynamic Instability, Anesthesia
Hemodynamic Changes and Propofol Pharmacokinetic Variation During Anesthesia Induction and Knee-chest Positioning
Induction of anesthesia and the knee-chest position are associated with hemodynamic changes that may impact patient outcomes. Changes from baseline in cardiac output and other hemodynamic variables following induction of…
- Conditions
- Hemodynamic Instability, Anesthesia, Surgery
- Trial name
- NCT03961958
- Testing
- Propofol reduction
- Where
- Portugal
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Salamanca
Ureteral Injury, Surgery--Complications
Ureteral Jets and Patient Positioning Study
The objective of the study is to identify the relationship between patient position during surgery and time to confirmation of ureteral patency on cystoscopy.
- Trial name
- NCT04732403
- Testing
- Patient Position
- Where
- United States
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- University of Arizona
Laparoscopic Gynecological Surgery
Effects of Standard and Modified Z-Trendelenburg Positions on Cerebral Oxygenation and Optic Nerve Sheath Diameter
The purpose of this study is to compare the effects of the standard Trendelenburg position and the modified Z-Trendelenburg position on cerebral oxygenation and optic nerve sheath diameter (ONSD) in patients undergoing…
- Trial name
- MOD-TREND (NCT07632287)
- Testing
- Standard Trendelenburg Position, Modified Z-Trendelenburg Position
- Where
- Turkey (Türkiye)
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Ankara Etlik City Hospital
Optic Nerve Diameter, Intracranial Pressure Increase
Effect of Optıc Nerve Dıameter ın Tymphanoplasty Surgery Performed ın Lateral Head Posıtıon
Studies exist to determine the effect of laparoscopic surgical procedures on increased intra-abdominal pressure; these studies include optic nerve sheath diameter (ONSD) measurement in various positions such as trendelenburg and…
- Trial name
- ONSD (NCT07407972)
- Testing
- optic nerve diameter
- Where
- Turkey (Türkiye)
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Bursa Yuksek Ihtisas Training and Research Hospital
Craniotomy Surgery, Pediatric Patient Safety
The Effect Of Positive End-Expiratory Pressure on Optic Nerve Sheath Diameter In Pediatric Patients Undergoing Craniotomy in Supine Position
This study evaluated the effect of positive end-expiratory pressure (PEEP) on optic nerve sheath diameter (ONSD), an indicator of intracranial pressure, in pediatric patients undergoing craniotomy in the supine position.
- Conditions
- Craniotomy Surgery, Pediatric Patient Safety, Pediatric Patient, Positive End-expiratory Pressure (PEEP)
- Trial name
- NCT07370779
- Testing
- General Anesthesia, Anesthetic Agents, mechanical ventilation (MV)
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Dr. Lutfi Kirdar Kartal Training and Research Hospital
Macrogenia, Microgenia
Evaluation of The Accuracy of CAD-CAM Custom Made Titanium Miniplates In Positioning of the Genial Segment in Computer Guided Genioplasty
In patients with chin deformeties, will using a custom made titanium plate in the positioning of the genial segments give an accurate results in comparison to the preoperative planned osteotomy and move of the Genioplasty.
- Conditions
- Macrogenia, Microgenia, Miniplate
- Trial name
- NCT03647865
- Testing
- Osseous Genioplasty
- Where
- Egypt
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Cairo University
Perioperative Pain
Effect of Bupivacaine Concentration on Ultrasound Guided Pericapsular Group Nerve Block Efficacy in Hip Surgery Patients
Fractures in and around the hip are quite common irrespective of both the young and elderly population groups and are associated with extreme pain.The anterior hip capsule is innervated by articular branches of femoral nerve…
- Trial name
- NCT05788458
- Testing
- Bupivacain
- Where
- Egypt
- Volunteers
- 135 people, healthy volunteers welcome
- Sponsor
- Benha University
Intracranial Hypertension, Brain Edema
Optical Nerve Sheath Changes During Head Down Laparoscopy
Patient undergoing laparoscopic radical prostatectomy in steep trendelenburg position are at risk to develop complication from brain edema.
- Conditions
- Intracranial Hypertension, Brain Edema, Pneumoperitoneum, Surgery, Laparoscopic
- Trial name
- NCT03957837
- Testing
- Optical nerve sheath diameter ultrasound measurement
- Where
- Italy
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- ASST Fatebenefratelli Sacco
Difficult Intubation, Thoracic Surgery
Double Lumen Tube Positioning With Bonfils Fiberoptic Stylet: Prospective Observational Study in 30 Adult Patients
The aim of this prospective observational study is to evaluate the efficacy of Bonfils fiberoptic stylet to perform tracheal intubation with double lumen tube after failure of standard laryngoscopy in 30 adults patients scheduled…
- Trial name
- NCT03982745
- Testing
- bonfils
- Where
- Italy
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Università Politecnica delle Marche
Neuropathy;Peripheral, Limb Ischemia
Feasibility and Clinical Utility of Paired Non-Invasive Hemodynamic and Tissue Oximetry Monitoring to Detect Limb Ischemia in Lithotomy-Positioned Surgeries
The LIMB Study is a prospective, observational pilot study evaluating the feasibility of combined non-invasive hemodynamic and lower-limb tissue oximetry monitoring during prolonged minimally invasive pelvic surgeries performed…
- Trial name
- LIMB (NCT07387653)
- Testing
- Lower-Extremity Perfusion Monitoring
- Where
- 2 sites in United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- The University of Texas Health Science Center, Houston
Infratentorial Neoplasms
Effects of the Prone and the Sitting Positions on the Brain Oxygenation in Posterior Fossa Surgery
The sitting or prone positions are used for posterior fossa surgery. Although the sitting position may cause hemodynamic instability, venous air embolism, it also provides optimum access to midline lesions, decreases intracranial…
- Trial name
- NCT02933749
- Testing
- SctO2, BIS
- Where
- Turkey (Türkiye)
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Istanbul University
Postoperative Atelectasis
Supine vs Prone Position and Atelectasis Assessed by Lung Ultrasound
Atelectasis frequently develops during and after general anesthesia due to factors such as anesthesia-induced diaphragmatic dysfunction, reduced functional residual capacity, altered ventilation-perfusion matching, and surgical…
- Trial name
- LUS-ATELEC (NCT07320092)
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Istanbul University - Cerrahpasa
Macular Holes, Visual Acuity Gain
Impact of C3F8 or SF6 Use and Length of Face-down Positioning (7 vs 14 Days Respectively) in Macular Hole Surgery
The primary purpose of the study was to compare the macular hole closure and visual acuity gain following vitrectomy using SF6 gas tamponade with 7 days of face-down positioning versus C3F8 gas tamponade with 14 days of face-down…
- Conditions
- Macular Holes, Visual Acuity Gain, Cataract, Complications
- Trial name
- NCT02073266
- Testing
- Macular hole surgery using a 25 G pars plana vitrectomy, ILM peeling, fluid-air exchange followed by air-gas exchange with SF6 or C3F8.
- Where
- Canada
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- CHU de Quebec-Universite Laval
Physical Activity, Surgery
Study Investigating Role of Unalike Patient Positioning on PROMIS Scores
The primary objective is to assess the impact of patient positioning using the candy cane stirrups as compared to boot stirrups on physical functioning outcomes at 6 weeks post-op
- Conditions
- Physical Activity, Surgery, Vaginal Hysterectomy, Vaginal Surgery
- Trial name
- STIRUPPS (NCT03446950)
- Testing
- Vaginal Surgery
- Where
- United States
- Volunteers
- 155 people, healthy volunteers welcome
- Sponsor
- University of Louisville
Orthognathic Surgical Procedures
Effect of Proximal Segment Positioning on Condylar Remodeling
This study aims to evaluate postoperative condylar remodeling in patients undergoing bimaxillary orthognathic surgery by comparing two different proximal segment positioning techniques used during mandibular osteotomy.
- Trial name
- NCT07758725
- Testing
- Proximal Segment Rotation, Inferior Border Osteotomy Without Proximal Segment Rotation
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Stone, Kidney
Evaluation of Retrograde Intra Renal Surgery in the T-tilted Position
To evaluate the effect of the T-tilted position on the stone-free rate compared to the standard lithotomy position in retrograde intrarenal surgeries.
- Trial name
- RIRS (NCT06860113)
- Testing
- T-tilting of the patient during surgery, standard lithotomy position
- Where
- Egypt
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Anesthesia, Anorectal Surgery
Spinal Anesthesia Versus General Anesthesia Using Laryngeal Mask Airway for Anorectal Surgeries in Prone Position
Anorectal surgeries are of the commonest elective surgeries that are performed worldwide under different types of anaesthesia. The aim of this prospective interventional study was to compare the use of general anaesthesia (GA)…
- Trial name
- NCT04214977
- Testing
- Spinal Anesthesia for Anorectal Surgeries in Prone Position, General Anesthesia Using Laryngeal Mask Airway for Anorectal Surgeries in Prone Position
- Where
- Jordan
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- University of Jordan
Periodontal Pocket, Impacted Third Molar Tooth
Evaluation of Two Different Grafting Techniques After Mandibular Impacted Third Molar Surgery
This study evaluates the effectiveness of using Mineralized Plasmatic Matrix and β-tricalcium phosphate that placed to extraction socket as a graft material in terms of periodontal damage occurred in the distal aspect of the…
- Conditions
- Periodontal Pocket, Impacted Third Molar Tooth, Impacted Teeth With Abnormal Position
- Trial name
- NCT04366635
- Testing
- Impacted third molar surgery, Application of mineralised plasmatic matrix, Application of β-tricalcium phosphate
- Where
- Turkey (Türkiye)
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Konya Necmettin Erbakan Üniversitesi
Prostatic Neoplasm, Urinary Bladder Neoplasm
The Effect of Prolonged Inspiratory Time on Gas Exchange During Robot-assisted Laparoscopic Surgery With Steep Trendelenburg Position : A Crossover Randomized Clinical Trial
Gas exchange disturbance frequently occurs in steep Trendelenburg position during robot-assisted laparoscopic prostatectomy or cystectomy.
- Trial name
- NCT02966535
- Testing
- Adjustment of Mechanical Ventilator Inspiratory to expiratory time ratio (1:2 to 1:1), Adjustment of Mechanical Ventilator Inspiratory to expiratory time ratio (1:1 to 1:2)
- Where
- South Korea
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Magnetic Resonance Imaging, Robotic Surgical Procedures
Light Needle Positioning Robot Under MRI Guidance
This study aim is to evaluate the needle positioning precision, compared to the real path planned by the physician on healthy voluntaries, by positioning a fictional needle, without inserting it.
- Trial name
- LPRobacus (NCT02360241)
- Testing
- Robot
- Where
- France
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble