About Careers MedBlog Contact us
Medindia LOGIN REGISTER
Advertisement

Night Time Surgery Increases Death Risk

by Shirley Johanna on August 30, 2016 at 5:09 PM
Font : A-A+

Night Time Surgery Increases Death Risk

Patients who undergo surgery during the night are twice as likely to die as patients operated on during regular working hours, says a new study.

Patients operated on later in the working day or the early evening also have a higher mortality risk, concludes the study by Dr Michael Tessler, Associate Professor of Anesthesiology, and Dr Ning Nan Wang, Chief Resident, Department of Anesthesia at McGill University Health Centre, Montreal, Canada, and colleagues.

Advertisement


Postoperative mortality risk factors have been previously extensively studied. Previously identified risk factors include the patient age (1,2); the American Society of Anesthesiologists (ASA) overall risk score (2) and emergency status (1,2). Research studies analyzing the time of surgery and postoperative mortality have had ambiguous results. The aim of this study was to investigate relationship between postoperative mortality and the time of the day of surgery at a Canadian hospital - the Jewish General Hospital in Montreal, Canada.

The research was published at the World Congress of Anesthesiologists (WCA) in Hong Kong.

After obtaining institutional ethics review board approval, a retrospective review of 30 days postoperative in-hospital mortality was carried out at the hospital, which is also a teaching hospital. The study evaluated all surgical procedures for the past 5 years, starting from April 1, 2010 to March 31, 2015. A database was constructed collecting variables about surgical interventions. All elective and emergent surgical cases were included except ophthalmic and local anesthesia cases (since the vast majority of ophthalmic cases are performed under local rather than general anesthesia, and not in the regular operating theater).
Advertisement

The working day was divided into three-time blocks (Daytime 07:30-15:29, Evening 15:30-23:29 and night time 23:30-07:29). The start time of the anesthetic recorded by the circulating nurse was used to determine in which time block the operation began.

There were 41,716 elective and emergency surgeries performed on 33,942 patients in 40,044 hospitalizations. Of these, 10,480 were emergency procedures; there were 3,445; 4,951; and 2,084 emergency procedures with anesthesia starting between day, evening and night respectively. There were 226, 97 and 29 deaths of all cases during day, evening and night surgery (79, 95, 29 mortalities for emergency surgery in the same time periods) respectively.

The researchers found that after adjustment for age and ASA scores, the patients operated on the night were 2.17 times more likely to die than those operating on during regular daytime working hours, and patients operated on in the late day were 1.43 times more likely to die than those operated on during regular daytime working hours.

The researchers say: "This study demonstrates that late day and night emergency surgery are associated with higher mortality when factoring in ASA score and patient age. Postoperative 30-day in-hospital mortality rate should include a start time of anesthesia, along with other known variables, as a risk factor."

They say that theoretical possible causes include, but are not limited to, provider fatigue during anesthesia and surgery, overnight hospital staffing issues, delays in treatment (for example how many operating rooms are available), or the patient being too sick to be postponed before treatment. The authors say: "Analysis of each of these possibilities is important to understand the reasons for this increased mortality and to direct any remedial action in an effort to reduce postoperative mortality."

Source: Medindia
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
What's New on Medindia
Test Your Knowledge on Kidney
World Disability Day 2022 - The Role of Innovative Transformation
Diet and Oral Health: The Sugary Connection May Become Sour
View all
Recommended Reading
News Archive
Date
Category
Advertisement
News Category

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Death Facts Bereavement 

Most Popular on Medindia

Find a Hospital Selfie Addiction Calculator Iron Intake Calculator Nutam (400mg) (Piracetam) Vent Forte (Theophylline) Drug Side Effects Calculator Blood - Sugar Chart Sinopril (2mg) (Lacidipine) Sanatogen Turmeric Powder - Health Benefits, Uses & Side Effects
This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close
×

Night Time Surgery Increases Death Risk Personalised Printable Document (PDF)

Please complete this form and we'll send you a personalised information that is requested

You may use this for your own reference or forward it to your friends.

Please use the information prudently. If you are not a medical doctor please remember to consult your healthcare provider as this information is not a substitute for professional advice.

Name *

Email Address *

Country *

Areas of Interests