Preoperative testing before noncardiac surgery: guidelines and recommendations.

Area of Science:

• Medical Science
• Clinical Practice
• Surgical Optimization

Background:

• Preoperative testing is frequently conducted before surgery, often driven by institutional protocols rather than direct clinical indication.
• While these tests can aid in risk stratification and management, their routine application may lead to unnecessary procedures and costs.
• The necessity of preoperative investigations should be determined by a patient's specific clinical context.

Purpose of the Study:

• To provide evidence-based guidelines for the appropriate selection of preoperative tests.
• To differentiate between medically necessary investigations and those that are protocol-driven.
• To optimize patient care by ensuring tests are ordered based on clinical relevance.

Main Methods:

• Systematic review of existing literature and clinical guidelines on preoperative testing.
• Analysis of patient factors including clinical history, comorbidities, and physical examination findings.
• Risk stratification based on surgical procedure type and patient-specific risk factors.

Main Results:

• Electrocardiography is recommended for high-risk surgery patients and intermediate-risk patients with additional factors; not indicated for low-risk surgery.
• Chest radiography is advised for patients at risk of pulmonary complications if results alter management.
• Specific laboratory tests (urinalysis, electrolytes, creatinine, glucose, CBC, coagulation) are indicated based on patient conditions and planned procedures.

Conclusions:

• Preoperative testing decisions must be individualized, prioritizing clinical necessity over routine protocols.
• Guidelines support targeted testing based on patient risk, comorbidities, and the potential impact on perioperative management.
• Appropriate selection of preoperative investigations enhances patient safety and resource utilization.