Reliability of nocturnal blood pressure dipping
Increasing evidence documents the fact that individuals whose blood pressure drops or 'dips' relatively little at night have a higher risk of numerous cardiovascular illnesses. To examine the reliability of various measures of nocturnal blood pressure dipping. This study examined 17 indivi...
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| Veröffentlicht in: | Blood pressure monitoring 2000-08, Vol.5 (4), p.217-221 |
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| container_title | Blood pressure monitoring |
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| creator | Dimsdale, J E von Känel, R Profant, J Nelesen, R Ancoli-Israel, S Ziegler, M |
| description | Increasing evidence documents the fact that individuals whose blood pressure drops or 'dips' relatively little at night have a higher risk of numerous cardiovascular illnesses.
To examine the reliability of various measures of nocturnal blood pressure dipping.
This study examined 17 individuals with ambulatory blood pressure monitoring on three 24 h recordings while they pursued a schedule similar to that of in-patients on a clinical research unit. Nocturnal dipping of blood pressure was scored three ways: as the drop in blood pressure between 10 p.m. and 6 a.m. ('clocktime'), as the drop in blood pressure tailored to each individual's reported bedtime ('bedtime'), and as the drop in blood pressure accompanying polysomnographically verified sleep ('sleeptime').
Adequate reliability was obtained for all three measures of dipping. There was, in general, a significant correlation across testing occasions (P |
| doi_str_mv | 10.1097/00126097-200008000-00004 |
| format | Article |
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To examine the reliability of various measures of nocturnal blood pressure dipping.
This study examined 17 individuals with ambulatory blood pressure monitoring on three 24 h recordings while they pursued a schedule similar to that of in-patients on a clinical research unit. Nocturnal dipping of blood pressure was scored three ways: as the drop in blood pressure between 10 p.m. and 6 a.m. ('clocktime'), as the drop in blood pressure tailored to each individual's reported bedtime ('bedtime'), and as the drop in blood pressure accompanying polysomnographically verified sleep ('sleeptime').
Adequate reliability was obtained for all three measures of dipping. There was, in general, a significant correlation across testing occasions (P<0.05). The correlation coefficient ranged from 0.5 to 0.8, depending on which criterion of dipping was selected and whether the endpoint was systolic blood pressure, diastolic blood pressure, or mean arterial blood pressure.
The reliability of systolic blood pressure dipping was somewhat lower than that of diastolic or mean arterial blood pressure dipping. Dipping appears to be a reliable construct. While no one definition of dipping was demonstrably better than another, the most sensible definition of dipping would allow some adjustment for defining 'night' on the basis of each individual's idiosyncratic bed time.</description><identifier>ISSN: 1359-5237</identifier><identifier>DOI: 10.1097/00126097-200008000-00004</identifier><identifier>PMID: 11035863</identifier><language>eng</language><publisher>England</publisher><subject>Adult ; Blood Pressure ; Blood Pressure Monitoring, Ambulatory ; Circadian Rhythm ; Humans ; Middle Aged ; Sleep</subject><ispartof>Blood pressure monitoring, 2000-08, Vol.5 (4), p.217-221</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c377t-5b8483691e5946fd2fc677e9502afe941e8aa175281026c27b6c12dc9f6e11043</citedby><cites>FETCH-LOGICAL-c377t-5b8483691e5946fd2fc677e9502afe941e8aa175281026c27b6c12dc9f6e11043</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11035863$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Dimsdale, J E</creatorcontrib><creatorcontrib>von Känel, R</creatorcontrib><creatorcontrib>Profant, J</creatorcontrib><creatorcontrib>Nelesen, R</creatorcontrib><creatorcontrib>Ancoli-Israel, S</creatorcontrib><creatorcontrib>Ziegler, M</creatorcontrib><title>Reliability of nocturnal blood pressure dipping</title><title>Blood pressure monitoring</title><addtitle>Blood Press Monit</addtitle><description>Increasing evidence documents the fact that individuals whose blood pressure drops or 'dips' relatively little at night have a higher risk of numerous cardiovascular illnesses.
To examine the reliability of various measures of nocturnal blood pressure dipping.
This study examined 17 individuals with ambulatory blood pressure monitoring on three 24 h recordings while they pursued a schedule similar to that of in-patients on a clinical research unit. Nocturnal dipping of blood pressure was scored three ways: as the drop in blood pressure between 10 p.m. and 6 a.m. ('clocktime'), as the drop in blood pressure tailored to each individual's reported bedtime ('bedtime'), and as the drop in blood pressure accompanying polysomnographically verified sleep ('sleeptime').
Adequate reliability was obtained for all three measures of dipping. There was, in general, a significant correlation across testing occasions (P<0.05). The correlation coefficient ranged from 0.5 to 0.8, depending on which criterion of dipping was selected and whether the endpoint was systolic blood pressure, diastolic blood pressure, or mean arterial blood pressure.
The reliability of systolic blood pressure dipping was somewhat lower than that of diastolic or mean arterial blood pressure dipping. Dipping appears to be a reliable construct. While no one definition of dipping was demonstrably better than another, the most sensible definition of dipping would allow some adjustment for defining 'night' on the basis of each individual's idiosyncratic bed time.</description><subject>Adult</subject><subject>Blood Pressure</subject><subject>Blood Pressure Monitoring, Ambulatory</subject><subject>Circadian Rhythm</subject><subject>Humans</subject><subject>Middle Aged</subject><subject>Sleep</subject><issn>1359-5237</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkMtOwzAQRb0A0VL4BZQVu1A_4tcSVbwkJCQEa8txxsjIjYOdLPr3pLTASKO5i3tnRgehiuAbgrVcY0yomEVN8Vxq7novmhO0JIzrmlMmF-i8lM_ZKZSUZ2hBCGZcCbZE61eIwbYhhnFXJV_1yY1T7m2s2phSVw0ZSpkyVF0YhtB_XKBTb2OBy-Ncoff7u7fNY_388vC0uX2uHZNyrHmrGsWEJsB1I3xHvRNSguaYWg-6IaCsJZJTRTAVjspWOEI7p72A-bmGrdD1Ye-Q09cEZTTbUBzEaHtIUzGSsoZKsjeqg9HlVEoGb4YctjbvDMFmD8j8AjJ_gMwPoDl6dbwxtVvo_oNHOuwb6fNhYQ</recordid><startdate>20000801</startdate><enddate>20000801</enddate><creator>Dimsdale, J E</creator><creator>von Känel, R</creator><creator>Profant, J</creator><creator>Nelesen, R</creator><creator>Ancoli-Israel, S</creator><creator>Ziegler, M</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20000801</creationdate><title>Reliability of nocturnal blood pressure dipping</title><author>Dimsdale, J E ; von Känel, R ; Profant, J ; Nelesen, R ; Ancoli-Israel, S ; Ziegler, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c377t-5b8483691e5946fd2fc677e9502afe941e8aa175281026c27b6c12dc9f6e11043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Adult</topic><topic>Blood Pressure</topic><topic>Blood Pressure Monitoring, Ambulatory</topic><topic>Circadian Rhythm</topic><topic>Humans</topic><topic>Middle Aged</topic><topic>Sleep</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dimsdale, J E</creatorcontrib><creatorcontrib>von Känel, R</creatorcontrib><creatorcontrib>Profant, J</creatorcontrib><creatorcontrib>Nelesen, R</creatorcontrib><creatorcontrib>Ancoli-Israel, S</creatorcontrib><creatorcontrib>Ziegler, M</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Blood pressure monitoring</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dimsdale, J E</au><au>von Känel, R</au><au>Profant, J</au><au>Nelesen, R</au><au>Ancoli-Israel, S</au><au>Ziegler, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reliability of nocturnal blood pressure dipping</atitle><jtitle>Blood pressure monitoring</jtitle><addtitle>Blood Press Monit</addtitle><date>2000-08-01</date><risdate>2000</risdate><volume>5</volume><issue>4</issue><spage>217</spage><epage>221</epage><pages>217-221</pages><issn>1359-5237</issn><abstract>Increasing evidence documents the fact that individuals whose blood pressure drops or 'dips' relatively little at night have a higher risk of numerous cardiovascular illnesses.
To examine the reliability of various measures of nocturnal blood pressure dipping.
This study examined 17 individuals with ambulatory blood pressure monitoring on three 24 h recordings while they pursued a schedule similar to that of in-patients on a clinical research unit. Nocturnal dipping of blood pressure was scored three ways: as the drop in blood pressure between 10 p.m. and 6 a.m. ('clocktime'), as the drop in blood pressure tailored to each individual's reported bedtime ('bedtime'), and as the drop in blood pressure accompanying polysomnographically verified sleep ('sleeptime').
Adequate reliability was obtained for all three measures of dipping. There was, in general, a significant correlation across testing occasions (P<0.05). The correlation coefficient ranged from 0.5 to 0.8, depending on which criterion of dipping was selected and whether the endpoint was systolic blood pressure, diastolic blood pressure, or mean arterial blood pressure.
The reliability of systolic blood pressure dipping was somewhat lower than that of diastolic or mean arterial blood pressure dipping. Dipping appears to be a reliable construct. While no one definition of dipping was demonstrably better than another, the most sensible definition of dipping would allow some adjustment for defining 'night' on the basis of each individual's idiosyncratic bed time.</abstract><cop>England</cop><pmid>11035863</pmid><doi>10.1097/00126097-200008000-00004</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1359-5237 |
| ispartof | Blood pressure monitoring, 2000-08, Vol.5 (4), p.217-221 |
| issn | 1359-5237 |
| language | eng |
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| source | MEDLINE; Journals@Ovid Complete |
| subjects | Adult Blood Pressure Blood Pressure Monitoring, Ambulatory Circadian Rhythm Humans Middle Aged Sleep |
| title | Reliability of nocturnal blood pressure dipping |
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