Clinical Research Directory

Shear-wave Elastography Compared to Respiratory Function Testing

The purpose of this study is to evaluate the relationship between transdiaphragmatic pressure (Pdi) and diaphragm shear-wave elastography (SWE) during state-of-the-art respiratory muscle testing including volitional efforts (e.g., maximal inspiratory pressure, maximal expiratory pressure, Valsalva maneuver), as well as maximal phrenic nerve stimulation.

A Study to Investigate of the Effects of Opioid Exposure on the Ability of the Diaphragm Muscle

The purpose of this study is to evaluate opioid dose effects on the ability of the diaphragm muscle to generate higher force behaviors.

Characterization of Fetal Lung With Quantitative Ultrasound

The purpose of the study is to show if it's possible to use a special kind of ultrasound called backscatter quantitative ultrasound (bQUS) to check on a baby's lungs when the mother is 36 weeks pregnant. 16 participants will be on study for a single 30 minute ultrasound between 32 and 36 weeks of pregnancy.

Evaluation of Gas Humidification Practices in Patients Under Invasive Mechanical Ventilation

When mechanical ventilation is initiated, a humidification method should be chosen. There is two methods: heat and humidity exchanger filters or heated humidity. The second method is recognized to be more efficient, but many external factors can influence its performance. Insufficient humidity results in observable problems, such as difficult management of respiratory secretions. The study compare two heated humidifiers already used in ICU. Data will be collected retrospectively from June 1, 2021.

Virtual Reality on Pulmonary Function After Upper Abdominal Surgeries

After upper abdomen surgery, respiratory muscle dysfunction is well recognised. After laparotomy and even laparoscopy, maximum static inspiratory and expiratory pressures are lowered, and recovery can take several days. A variety of reasons have been implicated in such respiratory muscle dysfunction, including irritation and inflammation, as well as injuries near the diaphragm, resulting in local mechanical failure, reflex inhibition, and pain.

Advanced Prediction of Respiratory Depression Episode Using the Linshom Continuous Predictive Respiratory Sensor

Investigators will enroll 320 patients who will undergo non-cardiac surgery, receive supplemental oxygen via face mask, and will be on a continuous pulse oximetry monitor in the Post Anesthesia Care Unit (PACU). The enrollment criteria were adapted from a previous study that showed SpO2 values seriously underestimated the severity of post-operative hypoxemia in patients with and without specific risk factors for hypoxemia. Research personnel will screen and ensure that each subject meets the enrollment criteria, and the informed consent is properly executed. Upon arrival to the PACU, each subject will be fitted with oxygen mask containing the Linshom sensor, which will be connected to a Linshom monitor for data collection. A side stream capnography line will be connected to the same face mask and the capnography data will be collected on the Zoe Medical 740 SELECT™ monitor. Additionally, two pulse oximeters will be applied to the same hand (non- NIBP arm), one of which will be connected to a hospital monitor (SoC) and the other to a Zoe Medical 740 SELECT™ monitor. The Linshom and 740 SELECT™ monitors will collect data once every second. Research personnel will then initiate the Linshom CPRM baseline mode and begin recording any clinical intervention (e.g., medications, oxygen delivery change, and stimulation upon detection of changes in patient's condition) that is performed by the PACU staff, paying close attention to, and recording of time at which those interventions occurred. Data collection will be performed throughout the subject's entire PACU stay. The CPRM data collection will be performed passively while the patient is monitored via SoC and will not interfere with clinical interventions that may take place during the data collection. Clinical staff in the PACU will be blinded to the Linshom CPRM data as well as pulse oximetry (non-SOC monitor) and capnography data collected.

Lung Ultrasound for Physiotherapy in Hospitalized Patients With Respiratory Complications

This study aims to evaluate the relevance of using point-of-care lung ultrasound (LUS) in modifying the physiotherapist's treatment plan for patients hospitalized in a general ward.

Respiratory Trends During Blood Transfusions in Newborns.

The prevalence of transfusion reactions is between 1 and 11% of transfusions. Most reactions are mild and do not pose a life-threatening risk to the patient. More serious problems may be the only manifestations that lead to suspicion of a transfusion reaction. Most noninfectious transfusion reactions are immune-mediated. Two main types of reactions can be distinguished: TACO (transfusion associated cardiac overload, which is a cardiogenic pulmonary edema) and TRALI (transfusion related acute lung injury, non-cardiogenic pulmonary edema). Although TRALI are diagnoses of exclusion, the presence of noncardiogenic pulmonary edema and respiratory problems in the vicinity of blood product transfusions should raise suspicion. Other signs of TRALI are hypotension and tachycardia, while in TACO arterial hypertension with positive water balance can be observed. According to previous reports, the prevalence of transfusion reactions in the neonatal population is approximately 8%. Factors associated with these reactions are low birth weight and low gestational age. However, diagnostic criteria of respiratory transfusion reactions are not uniform across studies, and often the generic terms "acute lung injury" have been used. Therefore, the primary objective of this study is to evaluate the respiratory trend during blood transfusions; secondary objectives are the study of risk factors for the development of respiratory worsening and the possible association with complications.

Clinical Outcomes in Adult Patients Undergoing Laparoscopic Surgery Under Neuraxial Anesthesia

The goal of this observational study is to learn about postoperative mortality and postoperative length of stay outcomes after abdominal laparoscopic major surgery. The main question it aims to answer is: Does general anesthesia lower complications compared to loco-regional anesthesia (keeping the patient spontaneously breathing and sedated) in laparoscopic abdominal major surgery? Participants are followed for neurological sequelae for 90 days following surgery