Postoperative volume balance: does stroke volume increase in Trendelenburg's position?
Clin Physiol Funct Imaging
; 37(3): 314-316, 2017 May.
Article
en En
| MEDLINE
| ID: mdl-26519213
ABSTRACT
In healthy humans, stroke volume (SV) and cardiac output (CO) do not increase with expansion of the central blood volume by head-down tilt or administration of fluid. Here, we exposed 85 patients to Trendelenburg's position about one hour after surgery while cardiovascular variables were determined non-invasively by Modelflow. In Trendelenburg's position, SV (83 ± 19 versus 89 ± 20 ml) and CO (6·2 ± 1·8 versus 6·8 ± 1·8 l/min; both P<0·05) increased, while heart rate (75 ± 15 versus 76 ± 14 b min-1 ) and mean arterial pressure were unaffected (84 ± 15 versus 84 ± 16 mmHg). For the 33 patients (39%) with a > 10% increase in SV (from 78 ± 16 to 90 ± 17 ml) corresponding to an increase in CO from 5·9 ± 1·5 to 6·9 ± 1·6 l min-1 (P<0·05) when tilted head-down, administration of 250 ml Ringer's lactate solution increased SV (to 88 ± 18 ml) and CO (to 6·8 ± 1·7 l min-1 ). In conclusion, determination of SV and/or CO in Trendelenburg's position can be used to evaluate whether a patient is in need of IV fluid as here exemplified after surgery.
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Bases de datos:
MEDLINE
Asunto principal:
Volumen Sistólico
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Inclinación de Cabeza
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Procedimientos Ortopédicos
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Hipovolemia
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Posicionamiento del Paciente
Tipo de estudio:
Diagnostic_studies
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Etiology_studies
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Prognostic_studies
Límite:
Adolescent
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Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Clin Physiol Funct Imaging
Asunto de la revista:
FISIOLOGIA
/
PATOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Dinamarca