Effects of Preoperative Fasting on ECG and Vital Parameters

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-05-31

Study Completion Date

2016-10-31

Brief Summary

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This study compares differences in hemodynamic ve ECG parameters of patients undergoing urological or orthopedic surgery under spinal anesthesia. First group will comprise of patients undergoing surgery in the morning hours; thus with a standard fasting duration (8 hours), and the second group will comprise of patients undergoing surgery afternoon; thus having a prolonged fasting duration (\>12 hours).

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Detailed Description

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Patients who are scheduled for surgery in surgical wards are routinely fasted after 12am on the day of the surgery regardless of the planned hour of the surgery. This results in a near standard fasting for patients with a planned surgery time in morning hours of the day. However, patients with a planned surgery time in the afternoon hours of the day are fasted more than 12 hours. This situation may not look very important for a healthy young adult but considering that the patient population in a hospital is mostly consisted of sick and elderly people, fasting and associated dehydration may have serious deleterious effects. Our objective is to observe and define these potential deleterious effects with a special focus on cardiovascular system of the patients.

Conditions

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Fasting Intraoperative Complications Ischemia

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Cohort 1- Morning Surgery

Patients' who are scheduled for surgery under spinal anesthesia with bupivacaine in morning hours (until 12pm) will be included in this cohort. Since all patients are ordered to stop oral ingestion by 12am at the day of the surgery, patients in this cohort will be exposed to a preoperative fasting for 8 hours

Preoperative Fasting for 8 hours

Intervention Type OTHER

Patients will be exposed to preoperative fasting

Spinal Anesthesia with Bupivacaine

Intervention Type DRUG

Spinal Anesthesia with heavy bupivacaine 0.5% is provided.

Cohort 2- Afternoon Surgery

Patients' who are scheduled for surgery under spinal anesthesia with bupivacaine in afternoon hours (after 12pm) will be included in this cohort. Since all patients are ordered to stop oral ingestion by 12am at the day of the surgery, patients in this cohort will be exposed to a preoperative fasting for more than 12 hours

Preoperative Fasting for more than 12 hours

Intervention Type OTHER

Patients will be exposed to preoperative fasting

Spinal Anesthesia with Bupivacaine

Intervention Type DRUG

Spinal Anesthesia with heavy bupivacaine 0.5% is provided.

Interventions

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Preoperative Fasting for 8 hours

Patients will be exposed to preoperative fasting

Intervention Type OTHER

Preoperative Fasting for more than 12 hours

Patients will be exposed to preoperative fasting

Intervention Type OTHER

Spinal Anesthesia with Bupivacaine

Spinal Anesthesia with heavy bupivacaine 0.5% is provided.

Intervention Type DRUG

Other Intervention Names

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Shorter Fasting Longer Fasting Spinal Block

Eligibility Criteria

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Inclusion Criteria

* Patients over 60 years of age
* Patients with an ASA (American Society of Anesthesiologists) physical status score of 1, 2 or 3
* Patients scheduled for elective orthopedic or urological surgery under spinal anesthesia

Exclusion Criteria

* Patients requiring emergency surgery
* Patients under 60 years of age
* Rejecting to participate in the study
* Contraindications to spinal anesthesia
* Evidence of myocardial ischemia in baseline electrocardiogram prior to surgery
* Conditions mimicking electrocardiographic signs of myocardial ischemia (e.g. electrolyte imbalances such as hypokalemia)

Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No