Cardiovascular Complication, Hemodynamic Instability
Conditions
Keywords
Deep Trendelenburg position, Robotic-assisted laparoscopic prostatectomy, Pressure recording analytical method, Transesophageal echocardiography, Cardiac cycle efficiency, Longitudinal Strain, Hemodynamic monitorization
Brief summary
Robotic-assisted laparoscopic prostatectomy (RALP) is a surgical method with good short-term results and accepted as the gold standard because of its minimal invasiveness. The pneumoperitoneum and deep Trendelenburg position (at least 25°-45° upside down) required for RALP surgeries can cause significant pathophysiological changes in both the pulmonary and cardiac systems, as well as complicate hemodynamic management. In this study, investigators aimed to determine the changes in the cardiovascular system during deep Trendelenburg position with the hemodynamic parameters monitored by the pressure record analytical method (PRAM) and the Longitudinal Strain measured with simultaneous transesophageal echocardiography.
Detailed description
RALP is the gold standard surgical technique in prostate surgery. Many Robotic-laparoscopic surgical techniques also require the intraoperative deep Trendelenburg position. However, the possible side effects of the deep Trendelenburg position on the cardiovascular system during surgery are unknown. Although the Trendelenburg position is a life-saving maneuver in hypovolemic patients, it also carries undesirable risks. Although the increase in venous return is expected to protect the cardiac output (CO) in the deep Trendelenburg position, the increase in intrathoracic pressure due to the intraperitoneal pressure may cause deterioration in venous return and a decrease in CO . In addition, the changing heart configuration in the deep Trendelenburg position may also cause an increase in the workload of the heart. Therefore, the need to evaluate hemodynamic management with advanced monitoring techniques, including fluid therapy in the perioperative period, has arisen in patients undergoing RALP. The pressure Recording Analytical Method (PRAM), is one of the most up-to-date monitoring methods designed for continuous CO measurement derived from the arterial pressure wave analysis, with a high signal sampling rate (1000 Hz). Many studies have shown that PRAM is a reliable monitoring method in major surgery. Cardiac Cycle Efficiency (CCE), which the PRAM method adds to our daily practice, is an index that defines hemodynamic performance in terms of energy consumption and efficiency. It can be expressed as the ratio of systolic energy performance to the total energy expenditure of the cardiac cycle and indicates the ability of the cardiovascular system to maintain homeostasis at different energy levels. However, data on how cardiac functions change in the deep Trendelenburg position are still limited. In this study, investigators aimed to demonstrate the reliability of the CCE value through its correlation with the Longitudinal Strain (LS) by observing the effect of the deep Trendelenburg position in RALP surgeries on cardiac functions using PRAM and Transesophageal Echocardiography (TEE).
Interventions
PROCEDURERobotic-assisted laparoscopic prostatectomy in deep Trendelenburg position.
After general anesthesia induction, the patients were placed in the deep Trendelenburg position (at least 25°-45° upside down).
Sponsors
Acibadem University
Study design
Observational model
CASE_ONLY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
MALE
Age
18 Years to 100 Years
Healthy volunteers
No
Inclusion criteria
* Patients with American Society Of Anesthesiology physical status 1-3 * Underwent Robotic-assisted laparoscopic prostatectomy * Patients with intra-arterial blood pressure monitoring before anesthesia induction. .
Exclusion criteria
* Under 18 years of age * Arrhythmia (atrial fibrillation, frequent premature beat) * History of myocardial infarction in the last 3 months * Heart failure * Severe pre-existing lung disease * Severe valvular heart disease * Chronic renal disease on dialysis,
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Longitudinal strain rate (LSR) was measured for evaluating cardiac performance | LSR was measured at supine position and 10 minute after trendelenburg position | LSR (%) is a parameter that shows the rate of dimensional change that occurs in the heart muscle. It is an indicator of the systolic functions of the left ventricle. LSR was calculated by intraoperative transesophageal echocardiography. |
| Cardiac cycle efficiency (CCE) was measured for evaluating cardiac performance | The duration of the measurement was defined from one minute before induction to the end of the surgery | CCE(unit) indicates the ability of the cardiovascular system to maintain homeostasis at different energy levels. CCE was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy) |
| Longitudinal strain (LS) was measured for evaluating cardiac performance | LS was measured at supine position and 10 minute after trendelenburg position | LS (%) is a parameter that shows the percentage of dimensional change that occurs in the heart muscle. It is an indicator of the systolic functions of the left ventricle. LS was calculated by intraoperative transesophageal echocardiography. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Cardiac index (CI) was measured for evaluating cardiac flow | The duration of the measurement was defined from one minute before induction to the end of the surgery | Cardiac index (CI, L/min/m2), was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). CI is a parameter used to asses cardiac stroke volume |
| Dp/Dt was measured to assess cardiac systolic function | The duration of the measurement was defined from one minute before induction to the end of the surgery | Dp/Dt(mmHg/msn), was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). Dp/Dt is a parameter used to asses cardiac contractility. |
| Systolic arterial pressure (SAP) was measured for evaluating perfusion pressure | The duration of the measurement was defined from one minute before induction to the end of the surgery | Systolic arterial pressure (SAP- mm/Hg) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). SAP is a parameter used to assess the pressure of the arterial system during cardiac systole |
| Stroke volume variation (SVV) was measured for evaluation of volume status | The duration of the measurement was defined from one minute before induction to the end of the surgery | Stroke volume variation (SVV,%), was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). SVV is a parameter used to asses cardiac preload and fluid responsiveness. |
| Mean arterial pressure (MAP) was measured for evaluating perfusion pressure | The duration of the measurement was defined from one minute before induction to the end of the surgery | Mean arterial pressure (MAP, mm/Hg) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). MAP is a parameter used to assess organ perfusion |
| Heart rate (HR) was measured for evaluating heart ritm | The duration of the measurement was defined from one minute before induction to the end of the surgery | Heart rate( HR, bpm) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). HR is a parameter used to assess the cardiac rate. |
| Systemic vascular resistance index (SVRI) was measured for evaluating peripheric vascular resistance | The duration of the measurement was defined from one minute before induction to the end of the surgery | Systemic vascular resistance index (SVRI, dyn\*s/cm5\*m2) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). SVRI is a parameter used to assess the resistance to blood flow offered by all of the systemic vasculatures, excluding the pulmonary vasculature. |
| Diastolic arterial pressure (DAP) was measured for evaluating perfusion pressure | The duration of the measurement was defined from one minute before induction to the end of the surgery | Diastolic arterial pressure (DAP, mm/Hg) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). DAP is a parameter used to assess the pressure of the arterial system during cardiac diastole |
| Pulse pressure variation (PPV) was measured for evaluation of volume status | The duration of the measurement was defined from one minute before induction to the end of the surgery | Pulse pressure variation (PPV,%) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). PPV is a parameter used to asses cardiac preload and fluid responsiveness. |
| Cardiac power output (CPO) was measured for evaluation of cardiac power reserve | The duration of the measurement was defined from one minute before induction to the end of the surgery | Cardiac power output (CPO, Watt) was monitored using the uncalibrated pulse contour device MostCare (Vytech, Vygon, Padova, Italy). CPO is a parameter used to asses cardiac reserve |
Countries
Turkey (Türkiye)
Outcome results
None listed