The Relationship of Preoperative Fasting With Tricuspid Annular Plane Systolic Movement in Female Patients

It is already known that right ventricular systolic dysfunction has prognostic value in various pathological conditions. Evaluating RV function with echocardiography is difficult because of the complex geometry of the RV. Although RV function was evaluated only visually for many years, guidelines have been published by the American Society of Echocardiography as a result of studies conducted in recent years. In this respect, abnormal RV function must be suspected in case of one of the following criteria S'<10 cm/s, TAPSE <16 mm, RVFAC <35%, or R-MPI (tissue Doppler) > 0.55. Combining multiple measures of RV function can more reliably distinguish normal from abnormal function. TAPSE is a parameter that can be easily measured for apex-basal shortening and gives specific information about the global RV function. When compared to other measures of RV function, it is less dependent on optimal image quality and easier to measure. Low TAPSE is not very common but has been measured in some individuals without heart disease because of measurement errors, diagnostic misclassification, and extremes of the normal spectrum. It was shown in the study conducted by Gullupınar et al. that TAPSE decreased significantly after blood donation in people who had donated blood. Also, studies are trying to determine a relationship between central venous pressure, which is a volume indicator, and TAPSE. There is also a study that reported a relationship between cardiac MRI and CT and the right ventricle.

The purpose of the present study is to try to correlate the volume change of TAPSE because of preoperative hunger and to determine whether there is a change in preoperative fasting and right ventricular functions.

Purpose: To show whether there is a relationship between volume and TAPSE. To determine the relationship of TAPSE with preload and its usability for this purpose, and whether there is a change in preoperative fasting and right ventricular functions.

Hypothesis: TAPSE value is related to volume.

Material Method The study will start between 21.11.2022 and 21.05.2023 in Aydın Maternity and Child Hospital, after the approval of the Non-Invasive Clinical Research Ethics Committee. Measurements will be made and recorded with Transthoracic Echocardiography (TTE) one day before the surgery, and TTE again if the preoperative fasting times on the day of the operation are appropriate in patients aged between 18-65 years who will undergo elective procedures under anesthesia. TTE will be made by the principal investigator Ferdi GULASTI. The demographic characteristics of the patients, preoperative blood values, heart rate during TTE, oxygen saturation (SaO2), Systolic Arterial Pressure (SAP), Diastolic Arterial Pressure (DAP), and Mean Arterial Pressure (MAP) will be recorded. The data will be compared statistically after the data collection process for the study is completed.