Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
Growth velocity of weight |
Weight is tested daily using the same electronic weighing scale in the different study units. Growth velocity of weight is described in g/day. |
During the procedure |
|
Secondary |
Growth velocity of head circumference |
Head circumference is measured weekly using a nonelastic measuring tape placed over the largest circumference of the skull weekly. Growth velocity is described in cm/week. |
During the procedure |
|
Secondary |
Incidence of feeding intolerance |
Feeding intolerance is defined as feeds being withheld for 24 hours or more due to concerns related to feeding. |
From the start day of feeding to discharge,an average of 50 days |
|
Secondary |
Time to achieve full enteral feeding |
Infants tolerating 120mL/ kg/day of enteral feeding for >24 hours are defined as full enteral feeding. |
During the hospitalization,an average of 20 days |
|
Secondary |
The changes of blood hemoglobin |
Blood hemoglobin is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as g/dL. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum albumin |
Serum albumin is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as g/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum proalbumin |
Serum proalbumin is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mg/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum potassium |
Serum potassium is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum sodium |
Serum sodium is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum phosphorus |
Serum phosphorus is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The changes of serum calcium |
Serum calcium is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of serum alkaline phosphatase |
Serum alkaline phosphatase is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as U/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The change of blood urea nitrogen |
Blood urea nitrogen is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The changes of cholesterol |
Cholesterol is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
The Change of triglyceride. |
Triglyceride is tested twice during the procedure. The change is the difference between baseline and after the intervention, described as mmol/L. |
The first day of full-strength fortification feeding, the 21th days of full-strength fortification feeding. |
|
Secondary |
Incidence of abnormal body temperature |
Axillary temperature is tested by nurses using clinical electronic thermometers once every four hours. Either low body temperature ( <35?) or high body temperature ( >37.5?) is abnormal body temperature. |
During the period using HMF, an average of 30 days |
|
Secondary |
Incidence of apnea |
Apnea is defined as premature infants with respiratory arrest of more than 20 seconds, accompanied by a slow heartbeat, purple or pale skin, and decreased muscle tone. |
During the period using HMF, an average of 30 days |
|
Secondary |
Incidence of abnormal heart rate |
Either heart rate increase (>180/min) or decrease (<90/min) is defined as abnormal heart rate. |
During the period using HMF, an average of 30 days |
|
Secondary |
Incidence of necrotizing enterocolitis (NEC) |
NEC is diagnosed according to the Bell's grade scale. |
From birth to discharge, an average of 20 days |
|
Secondary |
Incidence of bronchopulmonary dysplasia (BPD) |
BPD is defined as oxygen requirement at 36 weeks' postconceptional age. |
From birth to discharge, an average of 40 days |
|
Secondary |
Incidence of sepsis |
Both culture confirmed sepsis and clinical sepsis are defined as sepsis in this study. |
From birth to discharge, an average of 30 days |
|
Secondary |
Incidence of retinopathy of prematurity (ROP) |
ROP is diagnosed by ophthalmologists according to fundus examination. |
From birth to discharge, an average of 40 days |
|