Use of the sitting position for pineal tumour surgery in a five-year-old child

Objective: The objective of the study was to compare the posture-induced intraocular pressure (IOP) changes in primary angle-closure glaucoma (PACG) with or without glaucoma medications, and healthy control eyes with normal IOPs in Indian subjects. Materials and Methods: The IOP was measured in the sitting position and the supine position after 10, 20, and 30 min with a rebound tonometer. Results: Twenty-five patients with PACG and 30 controls with normal IOPs were studied. The IOP in the sitting position measured with the rebound tonometer was 13.8 + 3.2 mm Hg in eyes with PAC, and 12.9 + 2.9 mm Hg in eyes with normal IOPs. The IOP increased to 14.4 mm Hg, 16.8 mm Hg, and 18.9 mm Hg at 10 min, 20 min, and 30 min in PACG subjects. In normal age-matched controls, the IOP increased to 13.4 mm Hg, 14.9 mm Hg, and 17.8 mm Hg at 10 min, 20 min, and 30 min, respectively, but none of these differences were significant (P = 0.09; P = 0.08, P = 0.08). The mean postural IOP change from baseline was also not significant between the two groups. Only three patients were on single antiglaucoma medication with well-controlled IOP in the PACG group. Conclusions: Postural IOP changes are comparable among eyes with PACG with and without glaucoma medications, and control eyes.

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Prevention of catheter migration by fixation of the breast in a sitting position before implantation of the totally implantable venous access port in women

10.26226/morressier.5af985f5101067001b3aabd6 ◽

2018 ◽

Author(s):

Tae-Seok Seo

Keyword(s):

Venous Access ◽

Sitting Position ◽

Access Port ◽

Catheter Migration ◽

Venous Access Port

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Microsurgical resection of medullary cavernoma via the olivary zone by the retrosigmoid supracondylar approach

Neurosurgical Focus: Video ◽

10.3171/2019.10.focusvid.19293 ◽

2019 ◽

Vol 1 (2) ◽

pp. V7

Author(s):

Ken Matsushima ◽

Michihiro Kohno ◽

Helmut Bertalanffy

Keyword(s):

Cavernous Malformation ◽

Cleavage Plane ◽

Foramen Magnum ◽

Senior Author ◽

Neurological Deficits ◽

Lateral Part ◽

Sitting Position ◽

Brainstem Cavernoma ◽

Microsurgical Resection

Microsurgical resection of the medullary cavernoma is rare, comprising less than 15% of more than 250 surgeries of brainstem cavernoma performed by the senior author (H.B.).1 This video demonstrates a case of a cavernous malformation inside the lateral part of the medulla, which was surgically treated via the olivary zone by the retrosigmoid supracondylar approach in a half-sitting position. Osseous drilling of the lateral foramen magnum provided wide exposure of the cerebellomedullary cistern around the olive.2,3 The lesion was completely dissected at the appropriate cleavage plane from the normal parenchyma. The patient developed no new neurological deficits and had no recurrence during 3 years of follow-up after the operation.The video can be found here: https://youtu.be/7i7SccS5HmU.

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The Incidence, Volume, Absorption, and Timing of Supratentorial Pneumocephalus During Posterior Fossa Neurosurgery Conducted in the Sitting Position

Journal of Neurosurgical Anesthesiology ◽

10.1097/ana.0b013e3181ba99a7 ◽

2010 ◽

Vol 22 (1) ◽

pp. 59-66 ◽

Cited By ~ 24

Author(s):

Tod Sloan

Keyword(s):

Posterior Fossa ◽

Sitting Position ◽

Volume Absorption

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Real-Time Human Sitting Position Recognition using Wireless Sensors

Proceedings of the 2020 2nd International Conference on Image, Video and Signal Processing ◽

10.1145/3388818.3393714 ◽

2020 ◽

Author(s):

Jheanel E. Estrada ◽

Larry A. Vea

Keyword(s):

Real Time ◽

Wireless Sensors ◽

Sitting Position

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Seat pitch and comfort of a staggered seat configuration

Work ◽

10.3233/wor-208014 ◽

2021 ◽

Vol 68 (s1) ◽

pp. S151-S159

Author(s):

Zhihui Liu ◽

T. Rotte ◽

S. Anjani ◽

P. Vink

Keyword(s):

Longitudinal Axis ◽

The Other ◽

Sitting Position ◽

Lateral Direction ◽

Top View ◽

Design Freedom ◽

Cabin Interior ◽

Physical Dimensions

BACKGROUND: Staggered seats are a solution for the Flying-V aircraft, where the cabin’s longitudinal axis has a 26 degrees angle with respect to the direction of flight, to compensate for an otherwise oblique sitting position. However, little is known on acceptable pitches in this staggered configuration. OBJECTIVE: The goal of this research is to evaluate the comfort of different pitches for seats that are staggered relative to the cabin’s longitudinal axis. METHODS: Two rows of staggered seats are positioned at three different pitches (27, 29 and 31 inches). 53 participants were seated in each setup. For each, a questionnaire was completed including questions on comfort and discomfort, top view photos were taken to analyse postures and physical dimensions were recorded to define passengers’ space. RESULTS: Comfort as well as discomfort were significantly different for the three setups. The comfort at 27 inches was seen as unacceptably low. The 29 and 31-inch configurations showed to result in acceptable levels of comfort, comparable to higher-end seating layouts. There were very little complaints about space in lateral direction (elbow and seat width), showing the advantage of having your won armrest and shoulder space in the staggered configuration. Interesting was that at larger pitches more complaints were found for the seat characteristics, probably in the shorter pitch the other discomfort was overruling this. CONCLUSION: The 26-degree staggered configuration offers improvements in shoulder- and elbow-space. The results for the 29- and 31-inch are expected to allow enough design freedom for further exploration of such a configuration for the Flying-V cabin interior.

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Intraocular pressure and choroidal thickness postural changes in multiple system atrophy and Parkinson’s disease

Scientific Reports ◽

10.1038/s41598-021-88250-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Maddalena De Bernardo ◽

Giulio Salerno ◽

Marco Gioia ◽

Luigi Capasso ◽

Maria Claudia Russillo ◽

...

Keyword(s):

Parkinson’S Disease ◽

Parkinson's Disease ◽

Intraocular Pressure ◽

Multiple System Atrophy ◽

Choroidal Thickness ◽

Corneal Thickness ◽

Standing Position ◽

Sitting Position ◽

Postural Changes ◽

Iop Measurement

AbstractTo evaluate intraocular pressure (IOP) and choroidal thickness (ChT) postural changes in multiple system atrophy (MSA), Parkinson’s disease (PD) patients and healthy controls (HC). 20 MSA patients, 21 PD patients and 14 HC, were examined. All subjects underwent a complete examination, including corneal thickness, ChT, IOP and axial length (AL) measurements. IOP measurement was performed in supine, sitting, and standing positions, whereas ChT in sitting and standing positions. Supine to standing IOP variations were significantly higher in MSA vs PD(p = 0.01) and in MSA vs HC (p < 0.0001), whereas no significant differences were observed between PD and HC (p = 0.397). Mean sub-foveal ChT in MSA was 240 ± 92 μm in sitting position, and 215 ± 94 μm in standing position with a significant reduction (p = 0.008). Mean sub-foveal ChT in PD was 258 ± 79 μm in sitting position, and 259 ± 76 μm in standing position (p = 0.887). In HC it was 244 ± 36 μm in sitting position, and 256 ± 37 μm in standing position with a significant increase (p = 0.007). The significant IOP and ChT postural changes can be considered additional hallmarks of autonomic dysfunction in MSA and further studies are needed to consider them as biomarkers in the differential diagnosis with PD.

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Influence of design of dentist’s chairs on body posture for dentists with different working experience

BMC Musculoskeletal Disorders ◽

10.1186/s12891-021-04334-1 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

F. Huppert ◽

W. Betz ◽

C. Maurer-Grubinger ◽

F. Holzgreve ◽

L. Fraeulin ◽

...

Keyword(s):

Work Experience ◽

Dental Treatment ◽

Subjective Assessment ◽

Body Posture ◽

Control Group ◽

Sitting Position ◽

Ergonomic Design ◽

Sitting Posture ◽

Working Posture ◽

Working Postures

Abstract Background Musculoskeletal disorders (MSD) are a common health problem among dentists. Dental treatment is mainly performed in a sitting position. The aim of the study was to quantify the effect of different ergonomic chairs on the sitting position. In addition, it was tested if the sitting position of experienced workers is different from a non-dental group. Methods A total of 59 (28 m/31f) subjects, divided into two dentist groups according to their work experience (students and dentists (9 m/11f) < 10 years, dentists (9 m/10f) ≥ 10 years) and a control group (10 m/10f) were measured. A three-dimensional back scanner captured the bare back of all subjects sitting on six dentist’s chairs of different design. Initially, inter-group comparisons per chair, firstly in the habitual and secondly in the working postures, were carried out. Furthermore, inter-chair comparison was conducted for the habitual as well as for the working postures of all subjects and for each group. Finally, a comparison between the habitual sitting posture and the working posture for each respective chair (intra-chair comparison) was conducted (for all subjects and for each group). In addition, a subjective assessment of each chair was made. For the statistical analysis, non-parametric tests were conducted and the level of significance was set at 5%. Results When comparing the three subject groups, all chairs caused a more pronounced spinal kyphosis in experienced dentists. In both conditions (habitual and working postures), a symmetrical sitting position was assumed on each chair. The inter-chair comparisons showed no differences regarding the ergonomic design of the chairs. The significances found in the inter-chair comparisons were all within the measurementerror and could, therefore, be classified as clinically irrelevant. The intra-chair comparison (habitual sitting position vs. working sitting position) illustrated position-related changes in the sagittal, but not in the transverse, plane. These changes were only position-related (forward leaned working posture) and were not influenced by the ergonomic sitting design of the respective chair. There are no differences between the groups in the subjective assessment of each chair. Conclusions Regardless of the group or the dental experience, the ergonomic design of the dentist’s chair had only a marginal influence on the upper body posture in both the habitual and working sitting postures. Consequently, the focus of the dentist’s chair, in order to minimize MSD, should concentrate on adopting a symmetrical sitting posture rather than on its ergonomic design.

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