Regional Versus General Anesthesia for Hip Fracture and Postoperative Oxygenation

Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age65+
SponsorUniversity of Lisbon

About this trial

With this study, the investigators intend to measure oxygen saturation before and after hip surgery in the context of proximal femur fracture, comparing two types of anesthesia (general or spinal). The investigators also intend to study the effects of the two anesthetic techniques on sleep apnea, delirium, respiratory complications, and length of hospital stay.

This is an observational study, in which oxygen is measured at the fingertip with a sensor and a bracelet, without any intervention, inconvenience, or discomfort for the participant. Data will be collected on: respiratory complications, sleep apnea, delirium, length of hospital stay, and survival.

Data will be collected in the operating room and wards of Santa Maria Hospital, Lisbon, Portugal over a period of approximately 24 hours after the participant's operation. Information about participant's health and co-morbidities will be recorded.

There will be no implication for the participants' clinical care, since the study measurements will not be sent to the health professionals in charge. The operation, recovery, and treatments will not be influenced at any time by participation in the study.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

hospital admission for hip fracture;

scheduled for hip fracture surgery;

age above 65 years, both genders;

capable of consent or consent by responsible person;

Disqualifiers

hip fracture during hospitalization (not present upon admission)

patient refusal to participate

Trial population

Elder subjects with hip-fracture submitted to surgery.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

Not listed

Trial groups

102 Participants
are grouped into 2 trial groups
Group A: General anaesthesia
Group B: Rregional anaesthesia

Trial outcomes

Primary outcomes

1

Oxygenation index (SpO2/FiO2 ratio)

Oxygenation index (SpO2/FiO2 ratio) measured as the difference between oxygenation index on admission to the operating room and the mean SpO2 during the next 24 postoperative hours, compared between groups. Peripheral oxygen saturation measured continuously during the first postoperative day with the Konica Minolta PULSOX-DS5® device.

Time frame
first postoperative day

Secondary outcomes

1

Sleep Apnea index

average dips of SpO2 per hour, (\>= 4%)

Time frame
first postoperative day
2

Length of stay in the Post-anestesia Care Unit

Length of stay in the Post-anestesia Care Unit

Time frame
after the surgery, at discharge from the Post-anestesia Care Unit
3

Hospital Length of Stay (Days)

Length of stay in the hospital from admission until discharge, in days

Time frame
from hospital admission to hospital discharge, approximatelly 5 days
4

postoperative pulmonary complications

postoperative pulmonary complications defined as hypoxemia, respiratory failure, atelectasis, pneumothorax, respiratory infection.

Time frame
during the first postoperative day

Other outcomes

Sponsors and contacts

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University of Lisbon

Lead sponsor

Northern Lisbon Hospital Center

Collaborator