PPV for Predicting PIH in the Elderly
ConditionHypotension on Induction
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age65+
SponsorSecond Xiangya Hospital of Central South University
About this trial
The purpose of this observational study is to investigate the predictive power of pulse pressure variability during forced inhalation（PPVfi） on the occurrence of hypotension in elderly patients after induction of general anesthesia. The main question it aims to answer is:
Can the PPVfi predict the occurrence of hypotension in elderly patients after induction of general anesthesia? By recording the PPV of patients during forced inhalation before anesthesia induction, with the incidence of hypotension as the state variable and PPV as the test variable, the area under the ROC curve was calculated to determine the optimal threshold, sensitivity, and specificity of PPV.
Eligibility criteria
Qualifiers
American Society of Anesthesiologists (ASA) classification ≤ Grade III;Age ≥ 65 years old; Elective surgery; Patients who require invasive arterial blood pressure monitoring during surgery.
Disqualifiers
Presence of moderate or severe systemic diseases, such as heart failure, arrhythmias, valvular heart disease, pulmonary hypertension, severe pulmonary diseases (e.g., chronic obstructive pulmonary disease (COPD), asthma, bronchiectasis), endocrine disorders, etc.;Preoperative systolic blood pressure (SBP) ≥160 mmHg, mean arterial pressure (MAP) ≥110 mmHg, or heart rate (HR) ≥120 beats per minute;Patients with comorbid psychiatric or neurological disorders, or communication impairments.
Trial design
Treatments tested in this trial
- Not listed
Trial groups
No trial groups listed
Locations
Sponsors and collaborators
Source ClinicalTrials.gov