Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study

Background and aim: An accurate placement of spinal needle is crucial while injecting drugs to avoid a failed sub arachnoid block (SAB). A pre puncture estimation of skin to subarachnoid depth (SSD) may guide accurate spinal needle placement. This study is aimed to predict the depth from skin to sub...

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Main Authors: Mamta Khandelwal, Ekta Tiwari, Priyanka Jain, Chitra Singh, Nachiketa Bharadwaj, Darshan N
Format: Article
Language:English
Published: Creative Pharma Assent 2023-08-01
Series:Journal of Applied Pharmaceutical Research
Subjects:
Online Access:https://japtronline.com/index.php/joapr/article/view/309
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author Mamta Khandelwal
Ekta Tiwari
Priyanka Jain
Chitra Singh
Nachiketa Bharadwaj
Darshan N
author_facet Mamta Khandelwal
Ekta Tiwari
Priyanka Jain
Chitra Singh
Nachiketa Bharadwaj
Darshan N
author_sort Mamta Khandelwal
collection DOAJ
description Background and aim: An accurate placement of spinal needle is crucial while injecting drugs to avoid a failed sub arachnoid block (SAB). A pre puncture estimation of skin to subarachnoid depth (SSD) may guide accurate spinal needle placement. This study is aimed to predict the depth from skin to subarachnoid space based on pre-operative anthropometric assessment and to find out formula for predicting SSD, best suited in terms of accuracy when compared with observed depth. Method: In this hospital based, prospective, observational study, a total of 120 patients, of which 68 were men, and 52 were women (non-pregnant) with a mean age of 59.75 ±14.1 kilograms. The SSD was measured after SAB was performed. This SSD was compared with the predicted SSD calculated using the Abe’s, Bonadio’s, Craig’s, Stocker’s, and Chong’s modified formulae. Analysis was done using unpaired t test for quantitative data to determine best suited formula to predict SSD in our population in terms of both accuracy and ease of application. Pearson correlation test was also done. Results: The observed SSD in the overall study population was 4.96 ± 0.67 cm. Stocker’s formula is closest with a mean difference of 0.17cm. In males the mean observed depth was (5.06±0.60 cm) more than that in the non-pregnant female population (4.83±0.74cm). These anthropometric variables were statistically significant with a presentation value of <0.001. Conclusion: Among various formulae Stocker’s formula can most accurately predict the SSD when applied to Indian population.
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spelling doaj.art-b7ea78409bdc4ab08efcef1963b1e1832023-10-09T20:09:56ZengCreative Pharma AssentJournal of Applied Pharmaceutical Research2348-03352023-08-01113242810.18231/j.joapr.2023.11.3.24.28310Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational studyMamta Khandelwal0Ekta Tiwari1Priyanka Jain2Chitra SinghNachiketa Bharadwaj3Darshan N4Department of Anesthesia, SMS Medical College and Attached Hospitals, Jaipur, RajasthanDepartment of Anesthesia, SMS Medical College and Attached Hospitals, Jaipur, RajasthanDepartment of Anesthesia, SMS Medical College and Attached Hospitals, Jaipur, RajasthanDepartment of Anesthesia, SMS Medical College and Attached Hospitals, Jaipur, RajasthanDepartment of Anesthesia, SMS Medical College and Attached Hospitals, Jaipur, RajasthanBackground and aim: An accurate placement of spinal needle is crucial while injecting drugs to avoid a failed sub arachnoid block (SAB). A pre puncture estimation of skin to subarachnoid depth (SSD) may guide accurate spinal needle placement. This study is aimed to predict the depth from skin to subarachnoid space based on pre-operative anthropometric assessment and to find out formula for predicting SSD, best suited in terms of accuracy when compared with observed depth. Method: In this hospital based, prospective, observational study, a total of 120 patients, of which 68 were men, and 52 were women (non-pregnant) with a mean age of 59.75 ±14.1 kilograms. The SSD was measured after SAB was performed. This SSD was compared with the predicted SSD calculated using the Abe’s, Bonadio’s, Craig’s, Stocker’s, and Chong’s modified formulae. Analysis was done using unpaired t test for quantitative data to determine best suited formula to predict SSD in our population in terms of both accuracy and ease of application. Pearson correlation test was also done. Results: The observed SSD in the overall study population was 4.96 ± 0.67 cm. Stocker’s formula is closest with a mean difference of 0.17cm. In males the mean observed depth was (5.06±0.60 cm) more than that in the non-pregnant female population (4.83±0.74cm). These anthropometric variables were statistically significant with a presentation value of <0.001. Conclusion: Among various formulae Stocker’s formula can most accurately predict the SSD when applied to Indian population.https://japtronline.com/index.php/joapr/article/view/309skin to subarachnoid depth (ssd)anthropometrysub arachnoid block
spellingShingle Mamta Khandelwal
Ekta Tiwari
Priyanka Jain
Chitra Singh
Nachiketa Bharadwaj
Darshan N
Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
Journal of Applied Pharmaceutical Research
skin to subarachnoid depth (ssd)
anthropometry
sub arachnoid block
title Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
title_full Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
title_fullStr Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
title_full_unstemmed Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
title_short Prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment: an observational study
title_sort prediction of depth from skin to subarachnoid space based on preoperative anthropometric assessment an observational study
topic skin to subarachnoid depth (ssd)
anthropometry
sub arachnoid block
url https://japtronline.com/index.php/joapr/article/view/309
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