scholarly journals Quantifying the effect of biopsy lateral decubitus patient positioning compared to supine prostate MRI scanning on prostate translocation and distortion

2019 ◽  
Vol 14 (9) ◽  
Author(s):  
Ziga Snoj ◽  
Leonardo Rundo ◽  
Andrew B. Gill ◽  
Tristan Barrett
Keyword(s):  
Patient Positioning ◽  
Relative Volume ◽  
Lateral Decubitus Position ◽  
Lateral Direction ◽  
Positional Change ◽  
Institutional Review ◽  
Minimal Distortion ◽  
Lateral Decubitus ◽  
Moderate Negative Correlation ◽  
Correlation Trend

Introduction: More than a quarter of tumors are missed by magnetic resonance imaging/ultrasound (MRI/US) fusion-guided biopsy, the majority due to software-based misregistration. Transrectal approaches to biopsy are typically performed in the lateral decubitus position; conversely, diagnostic MRI is performed with the patient lying supine. Any position-related difference in prostate location or gland deformation could potentially exacerbate misregistration at subsequent biopsy. Methods: Fifteen healthy male volunteers (mean age 35.9 years, range 27–53) were included in this prospective, institutional review board-approved study. Each volunteer had an MRI performed in the supine position, followed by the second in the lateral decubitus position (mimicking a typical biopsy position). MRI images were co-registered and analyzed in order to assess prostate translocation and distortion. Results: Whole prostate translocation of ≥5 mm was observed in 20% of patients and ≥3 mm in 60% of patients. When dividing the prostate into prostatic sectors, the prostatic base demonstrated the largest positional difference. When plotting the translocation directions with relative volume difference, there was a moderate negative correlation trend in the latero-lateral direction. Only minimal distortion was observed, with similar distortion among all prostatic sectors. Conclusions: Positional change affects the prostate translocation, however, the effect on prostate distortion appears to be negligible. Prostate translocation in latero-lateral direction can be minimized with larger bladder volumes. Thereby, prostate translocation needs to be considered alongside software misregistration error; however, positional change should not affect software registration of MRI/US fusion-guided prostate biopsy.

Lateral Decubitus Position to Facilitate Pelvic Examination of the Patient with Severe Obesity

2020 ◽  
Author(s):  
Daniel M. Breitkopf
Keyword(s):  
Severe Obesity ◽  
Outpatient Setting ◽  
Lateral Decubitus Position ◽  
Lithotomy Position ◽  
Pelvic Examination ◽  
Pelvic Exam ◽  
Institutional Review ◽  
Lateral Decubitus ◽  
Dorsal Lithotomy Position ◽  
Dorsal Lithotomy

Abstract Background: Patients with elevated BMI pose a number of challenges for the gynecologist. Pelvic examination may be more difficult due to adiposity in the perineum and labia, increasing the distance between the vulva and cervix. The objective of the current work was to describe use of the lateral decubitus position to improve visualization of the cervix in women with severe obesity. Methods: From 7/1/2010 until 1/31/2020, all records of patients with obesity and unsuccessful cervical visualization during pelvic exam in the dorsal lithotomy position in the author’s clinical practice were reviewed after obtaining Mayo Clinic Institutional Review Board approval. For the lateral decubitus position, the patient was asked to lie on her side on the exam table, facing away from the examiner with knees bent. An assistant elevated the upper bent leg 45 degrees from horizontal, exposing the perineum. A vaginal speculum was then placed in the vagina with the posterior blade toward the anus. The speculum was opened gently as would be done with examination in dorsal lithotomy position until the cervix was visualized.Results: Eleven patients with severe obesity in the gynecologic practice of the author with prior unsuccessful cervical visualization in dorsal lithotomy position were examined in the lateral decubitus position. In all but one case the cervix was successfully visualized in the lateral decubitus position and all intended intrauterine procedures were successfully performed. Conclusions: The use of the lateral decubitus position appears to improve visualization of the cervix in the outpatient setting among women with severe obesity. Consideration should be given to use of the lateral decubitus position when the cervix cannot be visualized in the dorsal lithotomy position.Trial registration: not applicable

scholarly journals Assessment of Great Vessels for Anterior Access of L5/S1 Using Patient Positioning

2020 ◽  
Vol 14 (4) ◽  
pp. 438-444 ◽  
Author(s):  
John Choi ◽  
Isaac Rhee ◽  
Sameer Ruparel
Keyword(s):  
Patient Positioning ◽  
Population Group ◽  
Lateral Decubitus Position ◽  
Lumbosacral Region ◽  
Cross Sectional ◽  
Disk Space ◽  
Spinal Fusion Surgery ◽  
Mean Width ◽  
Great Vessels ◽  
Lateral Decubitus

Study Design: This was a prospective cross-sectional study.Purpose: The aim was to describe the effect of patient positioning, from supine to lateral decubitus position, on the width of the L5/S1 anterior disk space defined by the great vessels.Overview of Literature: The application of the lateral decubitus position interbody fusion has been rapidly increasing; however, there are concerns regarding the access to the lumbosacral region due to the great vessels, which necessitates further morphometric data.Methods: A total of 20 consecutive live patients awaiting lumbar surgery were subjected to two magnetic resonance imaging scans on the same day in both supine and lateral decubitus positions at a single center to investigate the anterior L5/S1 disk space.Results: The bare anterior L5/S1 disk window was present in all patients of this study population, and the mean width was 27 mm in the supine and 22 mm in the lateral decubitus position, with a mean reduction of 5.2 mm between the positions. The oblique corridor angle was measured at a mean of 33°.Conclusions: The bare window of L5/S1 disk space was present within this population group, and it was found to be mobile and changed significantly with patient positioning. Therefore, the spine surgeon or the access surgeon must consider the increased potential vascular risk during disk access in lateral decubitus anterior lumbar interbody spinal fusion surgery.

scholarly journals Lateral decubitus position to facilitate pelvic examination of the patient with severe obesity

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Daniel M. Breitkopf
Keyword(s):  
Severe Obesity ◽  
Case Series ◽  
Outpatient Setting ◽  
Lateral Decubitus Position ◽  
Lithotomy Position ◽  
Pelvic Examination ◽  
Institutional Review ◽  
Lateral Decubitus ◽  
Dorsal Lithotomy Position ◽  
Dorsal Lithotomy

Abstract Background Patients with elevated BMI pose a number of challenges for the gynecologist. Pelvic examination may be more difficult due to adiposity in the perineum and labia, increasing the distance between the vulva and cervix. The objective of the current work was to describe use of the lateral decubitus position to improve visualization of the cervix in women with severe obesity. Methods A case series was collected. From 7/1/2010 until 1/31/2020, all records of patients with obesity and unsuccessful cervical visualization during pelvic exam in the dorsal lithotomy position in the author’s clinical practice were reviewed after obtaining Mayo Clinic Institutional Review Board approval. For the lateral decubitus position, the patient was asked to lie on her side on the exam table, facing away from the examiner with knees bent. An assistant elevated the upper bent leg 45 degrees from horizontal, exposing the perineum. A vaginal speculum was then placed in the vagina with the posterior blade toward the anus. The speculum was opened gently as would be done with examination in dorsal lithotomy position until the cervix was visualized. Results Eleven patients with severe obesity in the gynecologic practice of the author with prior unsuccessful cervical visualization in dorsal lithotomy position were examined in the lateral decubitus position. In all but one case the cervix was successfully visualized in the lateral decubitus position and all intended intrauterine procedures were successfully performed. Conclusions In this case series, the use of the lateral decubitus position appears to improve visualization of the cervix in the outpatient setting among women with severe obesity. Consideration should be given to use of the lateral decubitus position when the cervix cannot be visualized in the dorsal lithotomy position.

Surgical Techniques for Thoracoscopic Esophagectomy at the Left Lateral Decubitus Position

2019 ◽  
Vol 70 (2) ◽  
pp. 197-197
Author(s):  
H. Sato ◽  
Y. Miyawaki ◽  
N. Fujiwara ◽  
H. Sugita ◽  
M. Aikawa ◽  
...  
Keyword(s):  
Surgical Techniques ◽  
Lateral Decubitus Position ◽  
Thoracoscopic Esophagectomy ◽  
Left Lateral Decubitus Position ◽  
Lateral Decubitus

scholarly journals Changes in the Bronchial Cuff Pressure of Left-Sided Double-Lumen Endotracheal Tube by Lateral Positioning: A Prospective Observational Study

2021 ◽  
Vol 10 (8) ◽  
pp. 1590
Author(s):  
Jong-Hae Kim ◽  
Eugene Kim ◽  
In-Young Kim ◽  
Eun-Joo Choi ◽  
Sung-Hye Byun
Keyword(s):  
Thoracic Surgery ◽  
Endotracheal Tube ◽  
Primary Outcome ◽  
Cuff Pressure ◽  
Lateral Decubitus Position ◽  
Double Lumen ◽  
Double Lumen Endotracheal Tube ◽  
Bronchial Cuff ◽  
Lateral Decubitus ◽  
Lateral Positioning

Proper bronchial cuff pressure (BCP) is important when using a double-lumen endotracheal tube (DLT), especially in thoracic surgery. As positional change during endotracheal tube placement could alter cuff pressure, we aim to evaluate the change in BCP of DLT from the supine to the lateral decubitus position during thoracic surgery. A total of 69 patients aged 18–70 years who underwent elective lung surgery were recruited. BCP was measured at a series of time points in the supine and lateral decubitus positions after confirming the DLT placement. The primary outcome was change in the initial established BCP (BCPi), which is the maximum pressure at which the BCP did not exceed 40 cmH2O without air leak in the supine position, after lateral decubitus positioning. As the primary outcome, the BCPi increased from 25.4 ± 9.0 cmH2O in the supine position to 29.1 ± 12.2 cmH2O in the lateral decubitus position (p < 0.001). Out of the 69 participants, 43 and 26 patients underwent surgery in the left-lateral decubitus position (LLD group) and the right-lateral decubitus position (RLD group) respectively. In the LLD group, the BCPi increased significantly (p < 0.001) after lateral positioning and the beginning of surgery and the difference value, ∆BCPi, from supine to lateral position was significantly higher in the LLD group than in the RLD group (p = 0.034). Positional change from supine to lateral decubitus could increase the BCPi of DLT and the increase was significantly greater in LLD that in RLD.

scholarly journals BRONCHOSPIROMETRY IN THE LATERAL DECUBITUS POSITION

1950 ◽  
Vol 19 (6) ◽  
pp. 821-829
Author(s):  
Emil Rothstein ◽  
Francis B. Landis ◽  
Benjamin G. Narodick
Keyword(s):  
Lateral Decubitus Position ◽  
Lateral Decubitus

scholarly journals The Cardiac Sympathetic Nerve Activity in the Elderly Is Attenuated in the Right Lateral Decubitus Position

2017 ◽  
Vol 3 ◽  
pp. 233372141770807 ◽  
Author(s):  
Konosuke Sasaki ◽  
Mayu Haga ◽  
Sarina Bao ◽  
Haruka Sato ◽  
Yoshikatsu Saiki ◽  
...  
Keyword(s):  
Heart Rate ◽  
Sympathetic Nerve ◽  
Sympathetic Nerve Activity ◽  
Lateral Decubitus Position ◽  
The Other ◽  
Elderly Adults ◽  
Nerve Activity ◽  
Left Lateral Decubitus Position ◽  
Lateral Decubitus ◽  
The Right

Objectives: The aim of this study was to evaluate the effect of the supine, left lateral decubitus, and right lateral decubitus positions on autonomic nervous activity in elderly adults by using spectral analysis of heart rate variability (HRV). Method: Forty-five adults aged 73.6 ± 5.7 years were enrolled. After lying in the supine position, all participants moved to the lateral decubitus positions in a random order and maintained the positions for 10 min, while electrocardiographic data were recorded to measure HRV. Results: The lowest heart rate continued for 10 min when participants were in the left lateral decubitus position compared with the other two positions ( p < .001), while the HRV indexes remained unchanged. The low-frequency HRV to high-frequency HRV ratio (LF/HF) for the right lateral decubitus position was significantly lower than that for the other positions. Discussion: The right lateral decubitus position may attenuate sympathetic nerve activity in elderly adults.

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