Abstract
Objective: The Systolic pressure variation (SPV) is known to be a sensitive indicator of hypovolemia. However, the SPV may be elevated due to other reasons, such as changes in lung compliance or tidal volumes. Using the SPV to monitor the hemodynamic status of patients in the prone position may, therefore, be problematic due to possible effects of increased abdominal pressure on both venous return and lung compliance. The purpose of this study is to examine whether or not the SPV changes significantly when placing the patient in the prone position. Methods: The arterial pressure waveform was recorded and SPV measured in 25 patients undergoing spine surgery. Patients that were elderly (age > 65 years), obese (BMI > 30), or had history of lung disease (COPD, Asthma), were excluded. Measurements were taken in the supine and prone position and the results were compared using the Paired Student's t-test. A P < 0.05 was considered significant. Values expressed are for mean ± standard deviation. Results: The SPV was 6.9 ±1.9 and 7.0 ± 1.8 mmHg in the supine and prone position respectively. These two results were not statistically significant. Conclusions: This study is important because it shows for the first time that the SPV does not change significantly in the prone position, and may therefore continue to be used as an indicator of the volume status. It also would appear to indicate that our methods for protecting the chest and abdomen in the prone position are effective.
| Original language | English |
|---|---|
| Pages (from-to) | 279-282 |
| Number of pages | 4 |
| Journal | Journal of Clinical Monitoring and Computing |
| Volume | 23 |
| Issue number | 5 |
| DOIs | |
| State | Published - Jul 24 2009 |
Fingerprint
Keywords
- Anesthesiology
- Hemodynamic monitoring
- Prone position
- Systolic pressure variation
ASJC Scopus subject areas
- Anesthesiology and Pain Medicine
- Critical Care and Intensive Care Medicine
- Health Informatics
Cite this
Does the systolic pressure variation change in the prone position? / Marks, Roger; Silverman, Richard; Fernandez, Raul; Candiotti, Keith A; Fu, Eugene.
In: Journal of Clinical Monitoring and Computing, Vol. 23, No. 5, 24.07.2009, p. 279-282.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Does the systolic pressure variation change in the prone position?
AU - Marks, Roger
AU - Silverman, Richard
AU - Fernandez, Raul
AU - Candiotti, Keith A
AU - Fu, Eugene
PY - 2009/7/24
Y1 - 2009/7/24
N2 - Objective: The Systolic pressure variation (SPV) is known to be a sensitive indicator of hypovolemia. However, the SPV may be elevated due to other reasons, such as changes in lung compliance or tidal volumes. Using the SPV to monitor the hemodynamic status of patients in the prone position may, therefore, be problematic due to possible effects of increased abdominal pressure on both venous return and lung compliance. The purpose of this study is to examine whether or not the SPV changes significantly when placing the patient in the prone position. Methods: The arterial pressure waveform was recorded and SPV measured in 25 patients undergoing spine surgery. Patients that were elderly (age > 65 years), obese (BMI > 30), or had history of lung disease (COPD, Asthma), were excluded. Measurements were taken in the supine and prone position and the results were compared using the Paired Student's t-test. A P < 0.05 was considered significant. Values expressed are for mean ± standard deviation. Results: The SPV was 6.9 ±1.9 and 7.0 ± 1.8 mmHg in the supine and prone position respectively. These two results were not statistically significant. Conclusions: This study is important because it shows for the first time that the SPV does not change significantly in the prone position, and may therefore continue to be used as an indicator of the volume status. It also would appear to indicate that our methods for protecting the chest and abdomen in the prone position are effective.
AB - Objective: The Systolic pressure variation (SPV) is known to be a sensitive indicator of hypovolemia. However, the SPV may be elevated due to other reasons, such as changes in lung compliance or tidal volumes. Using the SPV to monitor the hemodynamic status of patients in the prone position may, therefore, be problematic due to possible effects of increased abdominal pressure on both venous return and lung compliance. The purpose of this study is to examine whether or not the SPV changes significantly when placing the patient in the prone position. Methods: The arterial pressure waveform was recorded and SPV measured in 25 patients undergoing spine surgery. Patients that were elderly (age > 65 years), obese (BMI > 30), or had history of lung disease (COPD, Asthma), were excluded. Measurements were taken in the supine and prone position and the results were compared using the Paired Student's t-test. A P < 0.05 was considered significant. Values expressed are for mean ± standard deviation. Results: The SPV was 6.9 ±1.9 and 7.0 ± 1.8 mmHg in the supine and prone position respectively. These two results were not statistically significant. Conclusions: This study is important because it shows for the first time that the SPV does not change significantly in the prone position, and may therefore continue to be used as an indicator of the volume status. It also would appear to indicate that our methods for protecting the chest and abdomen in the prone position are effective.
KW - Anesthesiology
KW - Hemodynamic monitoring
KW - Prone position
KW - Systolic pressure variation
UR - http://www.scopus.com/inward/record.url?scp=70349241556&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349241556&partnerID=8YFLogxK
U2 - 10.1007/s10877-009-9194-8
DO - 10.1007/s10877-009-9194-8
M3 - Article
C2 - 19629727
AN - SCOPUS:70349241556
VL - 23
SP - 279
EP - 282
JO - Journal of Clinical Monitoring and Computing
JF - Journal of Clinical Monitoring and Computing
SN - 1387-1307
IS - 5
ER -