Related Experiment Video
Updated: Jul 6, 2026

Halogenated Agent Delivery in Porcine Model of Acute Respiratory Distress Syndrome via an Intensive Care Unit Type Device
Published on: September 24, 2020
Noise pollution on an acute surgical ward
Emma McLaren1, Charles Maxwell-Armstrong
1Department of Surgery, Queen's Medical Centre, Nottingham, UK.
Hospital noise levels significantly exceed World Health Organization (WHO) guidelines. Peak sound pressure levels in surgical wards often surpass 80 dB, impacting patient environments and requiring urgent intervention.
Area of Science:
- Healthcare Acoustics
- Hospital Environment Monitoring
- Patient Safety
Background:
- Noise pollution in hospitals is a growing concern.
- Understanding noise levels in surgical wards is crucial for patient well-being.
Purpose of the Study:
- To measure and analyze 24-hour noise levels on five general surgical wards.
- To compare recorded noise levels with World Health Organization (WHO) guidelines.
Main Methods:
- Noise levels were recorded over 24 hours on different types of surgical wards.
- Key metrics included maximum sound pressure level and equivalent continuous level (LEq).
- Measurements were compared against WHO community noise guidelines and control sites.
Main Results:
- Peak noise levels frequently exceeded 80 dB on all wards, with one ward reaching 95.6 dB.
- All measured noise levels surpassed WHO guidelines for both day and night.
- The high dependency unit exhibited significantly higher equivalent continuous levels (LEq) compared to other wards.
Conclusions:
- Current noise levels in surgical wards far exceed WHO recommendations.
- These findings highlight a critical issue in hospital environments.
- Urgent measures are necessary to reduce noise pollution in healthcare settings.
Related Concept Videos
Physical Assessment of the Respiratory Tract IV: Auscultation
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
Respiratory System Abnormal Finding I: Inspection and Percussion
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like asthma or COPD,...
Respiratory System Abnormal Finding II: Palpation and Auscultation
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
Suctioning the Oropharyngeal Airway
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
Endoscopic Studies II: Thoracocentesis
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...