Ultrasound of the Inferior Vena Cava in the Prevention of Hypotension After Induction of General Anesthesia
- Conditions
- Elderly Patients Undergoing Elective Non-cardiac Surgery
- Interventions
- Diagnostic Test: Multidimensional ultrasound of the inferior vena cava
- Registration Number
- NCT06530901
- Lead Sponsor
- Zhuan Zhang
- Brief Summary
Based on the preoperative ultrasound detection of various parametric indicators of the inferior vena cava cross-section, including the ratio of the inferior vena cava's long and short axes, cross-sectional area and circumference during two-dimensional and three-dimensional imaging, as well as the changes in respiratory variability of each parameter, we explored the predictive value of IVC ultrasound indicator parameters on hypotension after induction of general anesthesia in elderly patients undergoing elective non-cardiac surgery, screened the sensitive indicators, and calculated the cut-off values.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- NOT_YET_RECRUITING
- Sex
- All
- Target Recruitment
- 100
- Elderly patients undergoing elective non-cardiac surgery under general anesthesia;
- Age 65-85 years old;
- Body mass index (BMI) 18-28 kg/m2;
- American society of anesthesiologists (ASA) class I-III.
- Patient refusal or lack of cooperation;
- Inability to communicate properly;
- Severe sinus bradycardia, pacemaker implantation, atrioventricular block, and atrial fibrillation;
- Presence of severe hepatic and renal function abnormalities;
- Preoperative cardiac ultrasound suggesting LVEF <50%;
- Tricuspid valve displacement <16 mm by preoperative cardiac ultrasound;
- Chronic obstructive pulmonary disease;
- Pulmonary hypertension;
- Administration of drugs that inhibit the renin-angiotensin-aldosterone system;
- Possibility of a difficult airway.
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Elderly patients undergoing elective noncardiac surgery under general anesthesia Multidimensional ultrasound of the inferior vena cava -
- Primary Outcome Measures
Name Time Method Changes in the level of Systolic Blood Pressure Baseline (before induction), 10 min after induction The outcome above should be measured at the time before induction, 1 min after induction, 2 min after induction, 3 min after induction, 4 min after induction, 5 min after induction,10 min after induction
Multidimensional ultrasound of the inferior vena cava Baseline (before induction) The outcome above should be measured at the time before induction
Changes in the level of Mean Arterial Pressure Baseline (before induction), 10 min after induction The outcome above should be measured at the time before induction, 1 min after induction, 2 min after induction, 3 min after induction, 4 min after induction, 5 min after induction,10 min after induction
- Secondary Outcome Measures
Name Time Method Changes in the level of Heart Rate Baseline (before induction), 10 min after induction The outcome above should be measured at the time before induction, 1 min after induction, 2 min after induction, 3 min after induction, 4 min after induction, 5 min after induction,10 min after induction
Changes in the level of Diastolic Blood Pressure Baseline (before induction), 10 min after induction The outcome above should be measured at the time before induction, 1 min after induction, 2 min after induction, 3 min after induction, 4 min after induction, 5 min after induction,10 min after induction
Trial Locations
- Locations (1)
the Affiliated Hospital of Yangzhou University, Yangzhou University
🇨🇳Yangzhou, Jiangsu, China