Project description:Accessory mitral valve tissue is commonly associated with other congenital heart diseases and is usually detected in children causing left ventricular outflow tract obstruction. We present an adult patient with isolated non-obstructive accessory mitral valve tissue that was mimicking ruptured chordae of the mitral valve. Accessory mitral valve tissue in adults is very rare and can mimick various causes of left ventricular outflow tract obstruction. This patient represents the first case in literature wherein an unobstructive accessory mitral valve tissue simulated a ruptured chordae. This case illustrates that in patients with suspected mitral valve chordae rupture without any mitral regurgitation, this diagnosis should be considered, which can have therapeutic implications.

| S-EPMC3861131 | biostudies-literature

Pigtail Catheter: A Less Invasive Option for Pleural Drainage in Egyptian Patients with Recurrent Hepatic Hydrothorax.

Project description:Background and Aims. Treatment of hepatic hydrothorax is a clinical challenge. Chest tube insertion for hepatic hydrothorax is associated with high complication rates. We assessed the use of pigtail catheter as a safe and practical method for treatment of recurrent hepatic hydrothorax as it had not been assessed before in a large series of patients. Methods. This study was conducted on 60 patients admitted to Tanta University Hospital, Egypt, suffering from recurrent hepatic hydrothorax. The site of pigtail catheter insertion was determined by ultrasound guidance under complete aseptic measures and proper local anesthesia. Insertion was done by pushing the trocar and catheter until reaching the pleural cavity and then the trocar was withdrawn gradually while inserting the catheter which was then connected to a collecting bag via a triple way valve. Results. The use of pigtail catheter was successful in pleural drainage in 48 (80%) patients with hepatic hydrothorax. Complications were few and included pain at the site of insertion in 12 (20%) patients, blockage of the catheter in only 2 (3.3%) patients, and rapid reaccumulation of fluid in 12 (20%) patients. Pleurodesis was performed on 38 patients with no recurrence of fluid within three months of observation. Conclusions. Pigtail catheter insertion is a practical method for treatment of recurrent hepatic hydrothorax with a low rate of complications. This trial is registered with ClinicalTrials.gov Identifier: NCT02119169.

| S-EPMC4909926 | biostudies-literature

How to retrieve a ruptured micro-catheter tip stuck in a tight lesion?

Project description: Not available

| S-EPMC8086501 | biostudies-literature

Pre-Movement Cortico-Muscular Dynamics Underlying Improved Parkinson Gait Initiation after Instructed Arm Swing.

Project description:BackgroundThe supplementary motor area (SMA) is implicated in both motor initiation and stereotypic multi-limb movements such as walking with arm swing. Gait in Parkinson's disease exhibits starting difficulties and reduced arm swing, consistent with reduced SMA activity.ObjectiveWe tested whether enhanced arm swing could improve Parkinson gait initiation and assessed whether increased SMA activity during preparation might facilitate such improvement.MethodsEffects of instructed arm swing on cortical activity, muscle activity and kinematics were assessed by ambulant EEG, EMG, accelerometers and video in 17 Parkinson patients and 19 controls. At baseline, all participants repeatedly started walking after a simple auditory cue. Next, patients started walking at this cue, which now meant starting with enhanced arm swing. EEG changes over the putative SMA and leg motor cortex were assessed by event related spectral perturbation (ERSP) analysis of recordings at Fz and Cz.ResultsOver the putative SMA location (Fz), natural PD gait initiation showed enhanced alpha/theta synchronization around the auditory cue, and reduced alpha/beta desynchronization during gait preparation and movement onset, compared to controls. Leg muscle activity in patients was reduced during preparation and movement onset, while the latter was delayed compared to controls. When starting with enhanced arm swing, these group differences virtually disappeared.ConclusionInstructed arm swing improves Parkinson gait initiation. ERSP normalization around the cue indicates that the attributed information may serve as a semi-internal cue, recruiting an internalized motor program to overcome initiation difficulties.

| S-EPMC7683047 | biostudies-literature

Microtiming in Swing and Funk affects the body movement behavior of music expert listeners.

Project description:The theory of Participatory Discrepancies (or PDs) claims that minute temporal asynchronies (microtiming) in music performance are crucial for prompting bodily entrainment in listeners, which is a fundamental effect of the "groove" experience. Previous research has failed to find evidence to support this theory. The present study tested the influence of varying PD magnitudes on the beat-related body movement behavior of music listeners. 160 participants (79 music experts, 81 non-experts) listened to 12 music clips in either Funk or Swing style. These stimuli were based on two audio recordings (one in each style) of expert drum and bass duo performances. In one series of six clips, the PDs were downscaled from their originally performed magnitude to complete quantization in steps of 20%. In another series of six clips, the PDs were upscaled from their original magnitude to double magnitude in steps of 20%. The intensity of the listeners' beat-related head movement was measured using video-based motion capture technology and Fourier analysis. A mixed-design Four-Factor ANOVA showed that the PD manipulations had a significant effect on the expert listeners' entrainment behavior. The experts moved more when listening to stimuli with PDs that were downscaled by 60% compared to completely quantized stimuli. This finding offers partial support for PD theory: PDs of a certain magnitude do augment entrainment in listeners. But the effect was found to be small to moderately sized, and it affected music expert listeners only.

| S-EPMC4542135 | biostudies-literature

Application of pigtail catheter tailing combined with long-wire swapping technique in cerebral angiography via the right radial artery.

Project description:The safety and feasibility of transradial approach for cerebral angiography has been confirmed previously. However, this approach has been limited used due to the difficulty during the procedure. This study aimed to introduce a pigtail catheter tailing and long-wire swapping technique to improve the success rate without increasing complications.From August 2015 to December 2018, 560 patients who underwent cerebral angiography via transradial approach were recruited. The data including the type of aortic arch, type of Simmon catheter were collected.The loop was successfully constructed in 553 patients using Simmon-2 or Simmon-1 catheter. Of these patients, 72 patients successfully underwent cerebral and renal angiography, while 481 patients underwent cerebral angiography. The time for angiography was 52.87 ± 11.23 minutes and 47.8 ± 11.8 minutes, respectively. There were 369 (66.7%), 135 (24.4%), and 49 (8.9%) patients with type I, type II, and type III aortic arches, respectively, and their success rates of looping using Simmon-2 catheter were 97.8%, 97.0%, and 89.8%, respectively. The success rates of angiography in the right internal carotid artery, right vertebral artery, left internal carotid artery, and left vertebral artery were 100%, 100%, 98.9%, and 98.9%, respectively. No serious complications were observed in all patients.The pigtail catheter tailing and long guidewire swapping is considered as a safe procedure with high success rate for loop construction using a Simmon-2 catheter through the right radial artery, subsequently improving the success rate as well as the efficiency of angiography.

| S-EPMC7523839 | biostudies-literature

Reusing an electrocautery-enhanced stent deployment catheter to place additional pigtail stents for walled-off necrosis with disconnected duct.

Project description: Not available

| S-EPMC6251483 | biostudies-literature

An Exploratory Study of a Choreographic Approach to Golf Swing Dynamics: Bridging Biomechanics and Laban Movement Analysis.

Project description:This study introduces an innovative integration of Laban Movement Analysis (LMA) with biomechanical principles to examine the golf swing dynamics from an ecological perspective. Traditionally, LMA focuses on the qualitative aspects of movement, often isolated from external influences. This research bridges that gap by investigating how golfers manage and adapt to the inertial forces of the club throughout the swing. Using motion tracking sensors and screw theory, we analyzed the spatial movement pattern in the Kinesphere (mapped as an icosahedron) and related it to force dynamics in the Effort Cube through the inertia tensor. The results showed significant differences between skilled and novice golfers in terms of how efficiently they align their movements with the club's inertia. Skilled golfers demonstrated smoother Instantaneous Screw Axes (ISAs) and better synchronization with inertia forces, while novice golfers exhibited more abrupt deviations. These findings suggest that integrating qualitative movement descriptors with biomechanical models provides deeper insights into swing efficiency, performance improvement, and injury prevention. This combined framework offers a novel method to enhance both qualitative and quantitative analysis of golf swings.

| S-EPMC11548666 | biostudies-literature

Entrapment of high-density grid mapping catheter in a percutaneous ventricular assist device pigtail during ventricular tachycardia ablation with percutaneous hemodynamic support.

Project description: Not available

| S-EPMC10363473 | biostudies-literature