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This study aims to determine whether a standardized, weight-based crystalloid fluid bolus administered preoperatively reduces the incidence of postinduction hypotension (PIH) in patients undergoing cystoscopy.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| No Treatment | No Intervention | Patients will receive an ultrasound scan on their heart to determine cardiac output before surgery, but no fluid bolus will be given. | |
| Preoperative Fluid Bolus | Experimental | Patients will receive an ultrasound scan on their heart to determine cardiac output and will also receive a fluid bolus of Lactated Ringers before surgery. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Lactated Ringers | Drug | A bolus of Lactated Ringers (15mL/kg of ideal body weight) will be given to patients prior to anesthesia induction. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Incidence of Postinduction Hypotension | Number of patients that experience a decrease in mean arterial pressure (MAP) greater than 20% from the baseline MAP. | From the time patient enters the operating room to the end of surgery, assessed up to 24 hours. |
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| Measure | Description | Time Frame |
|---|---|---|
| Inferior Vena Cava Size | Size of the inferior vena cava before surgery, approximated using a point-of-care ultrasound scan | From the time of consent to the beginning of surgery, assessed up to 24 hours. |
| Respiratory Variability |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Sagar Bansal, MD | University of Missouri-Columbia | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital | Columbia | Missouri | 65212 | United States |
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| ID | Term |
|---|---|
| D007022 | Hypotension |
| ID | Term |
|---|---|
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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| ID | Term |
|---|---|
| D000077325 | Ringer's Lactate |
| ID | Term |
|---|---|
| D000077324 | Crystalloid Solutions |
| D007552 | Isotonic Solutions |
| D012996 | Solutions |
| D004364 | Pharmaceutical Preparations |
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Change in the size of the inferior vena cava during respiration, approximated using a point-of-care ultrasound scan
| From the time of consent to the beginning of surgery, assessed up to 24 hours. |