Oral Water Ingestion in Heart Transplant Patients
Oral Water Ingestion in Heart Transplant Patients
In this study the investigators propose to assess the hemodynamic response to the ingestion
 of 16 fl oz of water. The investigators will test the hypothesis that water ingestion will
 increase the systemic vascular resistance.
In this study we propose to assess the hemodynamic response to the ingestion of 16 fl oz of
 water. We will test the hypothesis that water ingestion will increase the systemic vascular
 resistance. This study will occur in patients status post cardiac transplantation during
 their clinical right heart catheterizations. Invasive hemodynamics including cardiac outputs
 and plasma norepinephrine levels will be measured before and 30 min after the water
 ingestion.
Inclusion Criteria:

 -  s/p cardiac transplantation scheduled for clinical right heart catheterization

 -  age > 18 years

 Exclusion Criteria:

 -  significant tricuspid regurgitation

 -  inability to safely swallow 500 ml of water

 -  other major medical comorbidities such as advanced renal disease where water ingestion
 may be harmful to patient