Comparison of inflationary non-invasive blood pressure (iNIBP) monitoring technology and conventional deflationary non-invasive blood pressure (dNIBP) measurement in detecting hypotension during cesarean section

Yamashita, Akiko; Irikoma, Shingo

doi:10.1186/s40981-017-0145-y

Cited by 10 publications

(9 citation statements)

References 9 publications

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“…Nukita et al (2020) reported that the repeated estimation of BP on the inflation phase can significantly reduce the risk of subcutaneous hemorrhage. Yamashita and Irikoma (2018) conclude that NIBP detection on cuff inflation detected hypotension faster than conventional NIBP without compromising the reliability of measurement, thus leading to early treatment of maternal hypotension and the prevention of adverse events related to the mother and the fetus. The efficacy of a new BP monitor (Takahashi et al 2020), based on detection of BP during inflation was evaluated in a randomised controlled study.…”

Section: Discussionmentioning

confidence: 86%

RETRACTED: Measuring blood pressure from Korotkoff sounds as the brachial cuff inflates on average provides higher values than when the cuff deflates

Celler

Argha

2022

Physiol. Meas.

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Objective. In this study, we test the hypothesis that if, as demonstrated in a previous study, brachial arteries exhibit hysteresis as the occluding cuff is deflated and fail to open until cuff pressure (CP) is well below true intra-arterial blood pressure (IABP). Approach Estimating systolic (SBP) and diastolic blood pressure (DBP) from the presence of Korotkoff sounds as CP increases may eliminate these errors and give more accurate estimates of SBP relative to IABP readings. Main Results. In 63 subjects of varying age 45.4 ± 19.9 years (range 21–76 years), including 44 men (45.2 ± 19.5, range 21–76 years) and 19 women (45.6 ± 21.4, range 21–75 years), there was a significant (p < 0.0001) increase in SBP from 124.4 ± 15.7 to 129.2 ± 16.3 mmHg and a significant (p < 0.0001) increase in DBP from 70.2 ± 10.7 to 73.6 ± 11.5 mmHg. Of the 63 subjects, 59 showed a positive increase in SBP (1–19 mmHg) and 5 subjects showed a reduction (−5 to −1 mmHg). The average differences for SBP estimates derived as the cuff inflates and estimates derived as the cuff deflates were 4.9 ± 4.7 mmHg, not dissimilar to the differences observed between IABP and NIBP measurements. Although we could not develop multiparameter linear or nonlinear models to explain this phenomenon we have clearly demonstrated through analysis of variance test that both body mass index (BMI) and pulse wave velocity are implicated, supporting the hypothesis that the phenomenon is associated with age, higher BMI and stiffer arteries. Significance. The implications of this study are potentially profound requiring the implementation of a new paradigm for NIBP measurement and a revision of the international standards for their calibration.

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Section: Discussionmentioning

confidence: 86%

RETRACTED: Measuring blood pressure from Korotkoff sounds as the brachial cuff inflates on average provides higher values than when the cuff deflates

Celler

Argha

2022

Physiol. Meas.

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“…Despite the apparent advantages regarding maternal safety, the effects on the foetus remain controversial. As a result of an acute reduction in uteroplacental blood flow, spinal anaesthesia (SA) may lead to foetal acidosis, hypoxia or low Apgar scores (2,3). Evidence that the effects of drugs in GA affect neonatal neurological consequences (7) continues to increase.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Optimal Anaesthesia Technique for Caesarean Section and Clinical Effects on Mothers and Newborns

Ergün¹,

Eti²,

Saraçoğlu³

et al. 2020

Bezmialem Science

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Objective: Regional anaesthesia is mostly preferred for elective caesarean delivery. This study aimed to compare general, epidural and spinal anaesthesia techniques in terms of their foetal and maternal effects.Methods: Parturients undergoing elective caesarean delivery were randomly divided into three groups: general anaesthesia (GA), epidural anaesthesia (EA), and spinal anaesthesia (SA). The APGAR score, foetal blood gas level, free O 2 requirement and positivepressure ventilation, phototherapy requirement, bilirubin level and weight loss were recorded. The time to the first breastfeeding, perioperative bleeding, crystalloid requirement, ephedrine consumption, first analgesic requirement, the time of defaecation and mobilization were also measured. Results:The APGAR scores and SpO 2 were lower in the GA group (p<0.05). Six newborns required O 2 supply and positive-pressure ventilation and one newborn from the GA group was intubated and transferred to the NICU. The time to first breastfeeding was prolonged in the GA group compared with the other groups (p<0.05). Postnatal 48-hour weight loss of the newborns was higher in the EA and SA groups than in the GA group (p<0.05). Peropertive Amaç: Sezaryen ile doğumlarda rejyonal anestezi çoğunlukla tercih edilir. Bu çalışmada genel, epidural ve spinal anestezi tekniklerinin fetal ve maternal etkileri açısından karşılaştırılması amaçlandı Yöntemler: Sezaryen ile doğum yapan gebeler rastgele üç gruba ayrıldı: genel anestezi (GA), epidural anestezi (EA) ve spinal anestezi (SA). APGAR skoru, fetal kan gazı seviyesi, serbest O 2 gereksinimi ve pozitif basınçlı ventilasyon, fototerapi gereksinimi, bilirubin seviyesi ve kilo kaybı kaydedildi. Ayrıca ilk emzirme zamanı, perioperatif kanama, kristalloid gereksinimi, efedrin tüketimi, ilk analjezik gereksinimi, ilk defekasyon ve mobilizasyon süresi ölçüldü.Bulgular: APGAR skorları ve SpO 2 GA grubunda düşüktü (p<0,05). Altı yenidoğanda O 2 desteği ve pozitif basınçlı ventilasyon gerekti ve GA grubundan bir yenidoğan entübe edildi ve NICU'ya transfer edildi. İlk emzirme zamanı GA grubunda diğer gruplara göre uzadı (p<0,05). Yenidoğanların doğum sonrası 48 saatlik kilo kaybı EA ve SA gruplarında GA grubundan daha yüksekti (p <0,05). Peropertif kanama GA grubunda daha yüksekti. SA grubunda, efedrin ve sıvı gereksinimleri daha yüksekti ve mobilizasyon süresi daha kısa idi (p<0,05). İlk analjezik gereksinimi ve ilk defekasyon süresi EA grubunda daha kısaydı (p<0,05).

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“…[2][3][4][5][6] However, in order to reduce the time of measurement and pressure required, some automatic oscillometric devices measure BPs during cuff inflation. 7,8 Some researchers quantified the influence of different cuff deflation and inflation rates on BP measurement. King compared the auscultatory BPs measured by two deflation rates of 2.35 and 4.7 mmHg per second, and found a significant effect.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cuff deflation and inflation rates on a deep learning-based automatic blood pressure measurement method: a pilot evaluation study

Pan

Chen

et al. 2020

Blood Pressure Monitoring

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Objective The aim of this study was to evaluate the performance of using a deep learning-based method for measuring SBPs and DBPs and the effects of cuff inflation and deflation rates on the deep learning-based blood pressure (BP) measurement (in comparison with the manual auscultatory method). Methods Forty healthy subjects were recruited. SBP and DBP were measured under four conditions (i.e. standard deflation, fast deflation, slow inflation and fast inflation) using both our newly developed deep learning-based method and the reference manual auscultatory method. The BPs measured under each condition were compared between the two methods. The performance of using the deep learning-based method to measure BP changes was also evaluated. Results There were no significant BP differences between the two methods (P > 0.05), except for the DBPs measured during the slow and fast inflation conditions. By applying the deep learning-based method, SBPs measured from fast deflation, slow inflation and fast inflation decreased significantly by 3.0, 3.5 and 4.7 mmHg (all P < 0.05), respectively, in comparison with the standard deflation condition. Whereas, corresponding DBPs measured from the slow and fast inflation conditions increased significantly by 5.0 and 6.8 mmHg, respectively (both P < 0.05). There were no significant differences in BP changes measured by the two methods in most cases (all P > 0.05, except for DBP change in the slow and fast inflation conditions). Conclusion This study demonstrated that the deep learning-based method can achieve accurate BP measurement under the deflation and inflation conditions with different rates.

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Comparison of inflationary non-invasive blood pressure (iNIBP) monitoring technology and conventional deflationary non-invasive blood pressure (dNIBP) measurement in detecting hypotension during cesarean section

Cited by 10 publications

References 9 publications

RETRACTED: Measuring blood pressure from Korotkoff sounds as the brachial cuff inflates on average provides higher values than when the cuff deflates

RETRACTED: Measuring blood pressure from Korotkoff sounds as the brachial cuff inflates on average provides higher values than when the cuff deflates

Assessment of the Optimal Anaesthesia Technique for Caesarean Section and Clinical Effects on Mothers and Newborns

Evaluation of cuff deflation and inflation rates on a deep learning-based automatic blood pressure measurement method: a pilot evaluation study

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