Clinical Predictors of Capillary Refill Time and Their Association With Triage Categories

Triage code assignment will be completed within the first 30 minutes of the patient's initial presentation to the emergency department (ED). Patients will be categorized into green, yellow, or red triage groups based on standard emergency triage protocols upon admission.

Following this, the patient will be transferred to the designated emergency care room (ER) based on the assigned triage code and further clinical evaluation and treatment.

Initially, the triage nurse will assess the patient and assign the triage code. Following this, the patient will be transferred to the designated emergency care room (ER), where a specialist emergency physician will perform further clinical evaluation and treatment.

CRT will be measured in seconds using a stopwatch after pressing the fingertip. The measurement will be repeated three times and average was calculated.Triage code assignment will be completed within the first 30 minutes of the patient's initial presentation to the emergency department (ED). Following this, the patient will be transferred to the designated emergency care room (ER) based on the assigned triage code, and all vital parameters (e.g., capillary refill time, heart rate, blood pressure) will be measured within 10 minutes of entering the emergency care area.

Heart rate will be recorded using standard clinical devices. Unit: Beats per minute Measurement technique:: Measured using clinical monitor.. Upon the patient's initial presentation to the emergency department (ED), triage code assignment will be completed within the first 30 minutes. Based on the assigned code, the patient will be directed to the appropriate emergency care room (ER). Heart rate measurements will be taken within 10 minutes of the patient's arrival in the emergency care room.

systolic blood pressure will be recorded using standard clinical devices. Unit: mmHg Measurement technique: Measured using clinical monitor.

Upon the patient's initial presentation to the emergency department (ED), triage code assignment will be completed within the first 30 minutes. Based on the assigned triage code, the patient will be directed to the appropriate emergency care room (ER).

Systolic blood pressure will be measured once, within 10 minutes of the patient's arrival in the emergency care room.

Systolic and diastolic blood pressure will be measured simultaneously in a single session within 10 minutes of the patient's arrival in the emergency care room.

diastolic blood pressure will be recorded using standard clinical devices. Unit: mmHg Measurement technique: Measured using clinical monitor. Upon the patient's initial presentation to the emergency department (ED), triage code assignment will be completed within 30 minutes. Based on the assigned triage code, the patient will be transferred to the appropriate emergency care room (ER).

Diastolic and systolic blood pressure will be measured simultaneously in a single session within 10 minutes of the patient's arrival in the emergency care room.

SpO2 will be recorded using standard clinical devices. Unit: Percent (%) Measurement technique: Measured using pulse oximetry. Oxygen saturation (SpO₂), along with other vital signs (blood pressure, heart rate), will be measured in a single session within 10 minutes of the patient's arrival in the emergency care room.

respiratory rate will be recorded using standard clinical devices. Unit: Breaths per minute Measurement technique: Measured using observation and counting.

Forearm temperature will be recorded using standard clinical devices. Unit: Degrees Celsius Measurement technique: Measured using infrared thermometer.

Body temperature will be recorded using standard clinical devices. Unit: Degrees Celsius. Body temperature was measured with a Yobekan model KV-11 infrared measuring device.

Measurement technique: Measured using infrared thermometer. All vital signs, including body temperature, were assessed sequentially by the same emergency physician within 10 minutes after the patient was transferred to the emergency care room (ER).

Pearson correlation analysis will be used to assess the correlation between capillary refill time (measured in seconds using a stopwatch and averaged from three measurements) and patient age (recorded in years from patient records).

Unit of Measure:

Capillary Refill Time (Mean): seconds Age: years

Measurement Tool:

CRT measured with a stopwatch by a trained emergency specialist Age extracted from patient record All CRT measurements will be taken within 10 minutes of the patient's arrival in the emergency care room by the same emergency physician, as part of the initial clinical evaluation.

Logistic regression will be used to assess the association between prolonged CRT (defined as >2 seconds, averaged from three measurements using a stopwatch) and triage category (Green, Yellow, Red) assigned at emergency department admission.

Unit of Measure:

CRT: seconds Triage: categorical (Green, Yellow, Red)

Measurement Tool:

CRT measured with a stopwatch (three repetitions, averaged) Triage assignment performed by certified triage nurse based on hospital protocol All CRT measurements were performed within 10 minutes of the patient's arrival in the emergency care room by the same emergency physician, as part of the initial vital sign assessment.