Defecation syncope secondary to functional inferior vena caval obstruction during a valsalva maneuver
@article{Brophy1993DefecationSS, title={Defecation syncope secondary to functional inferior vena caval obstruction during a valsalva maneuver}, author={Colleen Brophy and L Evans and Bauer E. Sumpio}, journal={Annals of Vascular Surgery}, year={1993}, volume={7}, pages={374-377} }
This report describes a case of defecation syncope secondary to functional inferior vena cava (IVC) obstruction. Preoperative hemodynamic assessment revealed a marked decrease in blood pressure and IVC obstruction when the patient performed a Valsalva maneuver. The intraoperative approach included continuous hemodynamic monitoring as well as transesophageal ultrasonography to assess IVC patency during surgical mobilization of the IVC. Functional obstruction of the IVC at the diaphragmatic…Â
7 Citations
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References
SHOWING 1-8 OF 8 REFERENCES
Pseudo-obstruction of inferior vena cava from Valsalva's maneuver.
- MedicineThe Journal of urology
- 1981
Spurious complete obstruction of the inferior vena cava in an adult as a result of the Valsalva maneuver.
- MedicineRadiology
- 1976
A case of spurious complete obstruction of the inferior vena cava in a 60-year-old man, which proved to be the result of a Valsalva maneuver is described.
Effect of Valsalva maneuver on the inferior vena cava in man.
- MedicineInvestigative radiology
- 1967
The Valsalva maneuver did not appear to narrow the inferior vena cava significantly, either in its abdominal course or at the diaphra.
Defecation Syncope: A Symptom With Multiple Etiologies
- Medicine
- 1986
Twenty patients with defecation syncope who were a subgroup of a larger, prospective study of syncope were evaluated, 13 women and seven men, with a mean age of 59 years, and it was found that 14 patients were recumbent before the urge to defecate, nine of these asleep.
The Valsalva maneuver: mechanisms and clinical implications.
- MedicineHeart & lung : the journal of critical care
- 1984
Heart rate and total peripheral resistance continue to be increased during the immediate poststrain period, and the ejection of an increased stroke volume into a constricted arterial system produces a rapid and marked increase in arterial pressure--the phase IV overshoot with its subsequent slowing of heart rate.
A study on the Valsalva manoeuvre in young healthy subjects.
- MedicineElectroencephalography and clinical neurophysiology
- 1978