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The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia
Thesis (MMed)--Stellenbosch University, 2014.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2015
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| _version_ | 1867614004086571008 |
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| access_status_str | Open Access |
| author | Jacobs, Samier |
| author2 | Langenegger, Eduard |
| author_browse | Jacobs, Samier Langenegger, Eduard |
| author_facet | Langenegger, Eduard Jacobs, Samier |
| author_sort | Jacobs, Samier |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MMed)--Stellenbosch University, 2014. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/95901 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:45:08.467Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/95901 The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia Jacobs, Samier Langenegger, Eduard Stellenbosch University. Faculty of Medicine and Health Sciences. Dept. of Obstetrics and Gynaecology. Preeclampsia Blood pressure -- Monitoring Hypertension Injections, Intra-arterial Dissertations -- Medicine Theses -- Medicine Dissertations -- Obstetrics and gynaecology Theses -- Obstetrics and gynaecology Thesis (MMed)--Stellenbosch University, 2014. ENGLISH ABSTRACT: OBJECTIVE: The aim of this study was to compare the accuracy of non-invasive brachial blood pressure measurements, using automated and manual devices, to invasive brachial intra-arterial blood pressure measurements in patients with preeclampsia, during acute severe hypertension. STUDY DESIGN: A prospective descriptive cross sectional study was conducted in the Obstetrics Critical Care Unit (OCCU) of Tygerberg Hospital. Pre-eclamptic patients with acute severe hypertension, who required the placement of brachial intra-arterial lines due to failed radial intra-arterial line placement, were included in the study. Both automated oscillometric and blinded manual aneroid sphygmomanometric blood pressures were recorded during hypertensive peaks and after stabilization of BP using intravenous Labetalol or Nepresol. These two noninvasive methods of blood pressure measurements were compared to brachial intraarterial blood pressure measurements. RESULTS: There was weak correlation between manual and intra-arterial SBP (r = 0.27, p = 0.048) for SBP≥160mmHg. The calculated mean difference between manual SBP compared to the intra-arterial SBP in this group was -23.19mmHg (+/- 19.40). There was moderate correlation between automated and intra-arterial SBP (r = 0.69, p < 0.05). The calculated mean difference between automated SBP compared to the intra-arterial SBP in this group was -16.85mmHg (+/- 11.58). CONCLUSION: This study of pre-eclamptic women demonstrated that both non-invasive methods of BP measurement were inaccurate measures of the true systolic intra-arterial BP and significantly underestimated SBP≥160mmHg when compared to brachial intra-arterial measurements. The SBP was also underestimated, to a lesser degree, for mild moderate hypertension. This study also demonstrated that direct invasive BP monitoring using the brachial artery is a safe method for accurate haemodynamic monitoring. We recommend the use of intra-arterial BP monitoring in pre-eclamptic women with acute severe hypertension. Radial arterial cannulation should be used as the first option and the brachial artery should be used if the first option fails. AFRIKAANSE OPSOMMING: DOELWIT: Die doel van hierdie studie was om die akuraatheid van nie indringende bragiale bloeddruk metings, wat met outomatiese en manuele aparate geneem is, te vergelyk met bragiale intra-arteriele bloeddruk metings gedurend akute erge hipertensie in pasiente met pre-eklampsie, STUDIE ONTWERP: ʼn Prospektiewe beskrywende dwarssnit studie was in die Obstetriese Kritiese Sorg Eenheid (OCCU) van Tygerberg Hospitaal uit gevoer. Preeklamptiese pasiente met akute erge hipertensie, wat bragiale intra-arteriele lyne nodig gehad het, as gevolg van gefaalde radiale intra-arteriele lyn plasing, was in hierdie studie ingesluit. Beide outomatiese ossilometriese en geblinde aneroide sfigmomanometriese bloeddrukke, tydens hipertensiewe pieke en na stabilisering van bloeddrukke met binneaarse Labetalol of Nepresol, was aangeteken, Die twee nie indringende metodes van bloeddruk meting was met bragiale intra-arteriele bloeddruk metings vergelyk. RESULTATE: Daar was ʼn swak korrelasie tussen manuele en intra-arteriele sistoliese bloedrukke SBP (r = 0.27, p = 0.048) vir SBP≥160mmHg. Die berekende gemiddelde verskil tussen manuele SBP en intra-arteriele SBP was -23.19mmHg (+/- 19.40) in hierdie groep. Daar was ʼn matige korrelasie tussen outomatiese en intra-arteriele SBP (r = 0.69, p < 0.05). Die berekende gemiddelde verskil tussen outomaties SBP vergelyk met intra-arteriele SBP was -16.85mmHg (+/- 11.58) in hierdie groep. GEVOLGTREKKING: Hierdie studie van pre-eklamptiese vrouens, het getoon dat beide nie indringende metodes van bloeddruk meting, nie akurate metings van ware sistoliese intraarteriele bloeddruk is nie, en SBP≥160mmHg word aansienlik onderskat wanneer dit met bragiale intra-arteriele metings vergelyk word. Die SBP was ook tot ʼn minder mate onderskat vir matige hipertensie. Die studie het ook getoon dat die direkte bragiale intra-arteriele metode van bloeddruk monitering, ʼn veilige metode van hemodinamiese monitering is. Ons beveel die gebruik van intra-arteriele bloeddruk monitering aan, in preeklamptiese vrouens met akute erge hipertensie. Radiale arteriele kanulasie moet gebruik word as die eerste opsie en die bragiale arterie moet gebruik word as die eerste opsie faal. 2015-01-13T11:48:14Z 2015-01-13T11:48:14Z 2014-12 Thesis http://hdl.handle.net/10019.1/95901 en_ZA Stellenbosch University 57 p. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Preeclampsia Blood pressure -- Monitoring Hypertension Injections, Intra-arterial Dissertations -- Medicine Theses -- Medicine Dissertations -- Obstetrics and gynaecology Theses -- Obstetrics and gynaecology Jacobs, Samier The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title | The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title_full | The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title_fullStr | The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title_full_unstemmed | The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title_short | The comparison of non-invasive blood pressure monitoring with brachial intra-arterial blood pressure monitoring in patients with severe pre-eclampsia |
| title_sort | comparison of non invasive blood pressure monitoring with brachial intra arterial blood pressure monitoring in patients with severe pre eclampsia |
| topic | Preeclampsia Blood pressure -- Monitoring Hypertension Injections, Intra-arterial Dissertations -- Medicine Theses -- Medicine Dissertations -- Obstetrics and gynaecology Theses -- Obstetrics and gynaecology |
| url | http://hdl.handle.net/10019.1/95901 |
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