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A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
Hyperthermia in Term Neonates: Profile and Factors Associated With Sepsis
Shivangi R Jaiswal1, Ruchi Rai2, Dharmendra K Singh1
1Department of Pediatrics, Postgraduate Institute of Child Health, Noida, IND.
Cureus
|May 25, 2026
Summary
Differentiating neonatal hyperthermia (HT) is crucial. Sepsis, environmental hyperthermia (EH), and dehydration fever (DF) present similarly, but lethargy, repeat HT, and elevated C-reactive protein (CRP) indicate sepsis.
Area of Science:
- Neonatal Medicine
- Pediatric Infectious Diseases
- Clinical Diagnostics
Background:
- Neonatal hyperthermia (HT) can stem from sepsis, environmental factors (EH), or dehydration fever (DF).
- Accurate diagnosis is vital for appropriate treatment and to prevent unnecessary antibiotic use in neonates.
- Distinguishing sepsis from other causes of HT is a clinical challenge.
Purpose of the Study:
- To differentiate neonatal hyperthermia (HT) causes: sepsis, environmental hyperthermia (EH), and dehydration fever (DF).
- To identify clinical and laboratory parameters associated with sepsis in term neonates presenting with HT.
- To guide provisional diagnosis and antimicrobial stewardship.
Main Methods:
- Term neonates admitted with HT (>37°C) were enrolled.
- Evaluated using complete blood count, C-reactive protein (CRP), and blood cultures.
- Neonates were grouped into EH, DF, and sepsis based on clinical course and investigations; characteristics were compared.
Main Results:
- Sepsis accounted for 42.2% of HT cases, followed by EH (34.5%) and DF (23.3%).
- Significantly higher mean C-reactive protein (CRP) levels were observed in the sepsis group.
- Lethargy, recurrent hyperthermia, and elevated CRP were significantly associated with sepsis diagnosis.
Conclusions:
- Not all neonatal hyperthermia cases require sepsis treatment; careful evaluation is necessary.
- Sick neonates require prompt antibiotic treatment, while well-appearing neonates can be closely monitored.
- A repeat episode of HT in well-appearing neonates warrants antibiotic initiation and thorough investigation.
Related Concept Videos
Increased Body Temperature
A body temperature above 38°C (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in response to an infection or illness.
Factors Affecting Body Temperature
As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may include:
Factors may include:
Homeostatic Imbalances in Body Temperature
Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
Types of Fever
Fever can be triggered by several factors, including infections, nervous system disorders, certain cancers, blood diseases like leukemia, embolism, thrombosis, heatstroke, dehydration, surgical trauma, crushing injuries, and allergic reactions.
Here are the different types of fever:
Here are the different types of fever:
Methods of reducing fever
The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
Pharmacological Methods of Reducing Fever:
Temperature Measurement Sites
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...

