Houssein Youness

Dr. Houssein Youness

Section of Pulmonary, Critical Care and Sleep Medicine, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
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Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 June 2017 in Journal of Thoracic Disease
Verified
Journal Article
Closed access
PDF file
AAAhmed Awab
Ahmed Awab
MKMuhammad S. Khan
Muhammad S. Khan
HYHoussein Youness
Houssein Youness
Pulmonary alveolar proteinosis (PAP) is a rare disease characterized by alveolar accumulation of surfactant material with resulting hypoxemia and reduced lung function. Whole lung lavage (WLL) to physically remove the proteinaceous material from the affected lung is the standard treatment. Since its original description in 1964, there have been increasing numbers of WLL procedures done worldwide and the technique has been variously refined and modified. When done in experienced centers, WLL provides long lasting benefit in the majority of patients. It is considered safe and effective. There are no guidelines standardizing the procedure. Our preferred method is to lavage one lung at a time, with the patient supine, filling to functional residual capacity (FRC) and repeating cycles of drainage and instillation with chest percussion until the effluent is clear. The aim of this article is to provide a detailed description of the technique, equipment needed and logistic considerations as well as providing a physiologic rationale for each step of WLL. We will also review the available data concerning variations of the technique described in the literature.

1 August 2019 in Annals of Translational Medicine
Verified
Journal Article
Open access
TKTaha Khan
Taha Khan
YUYasir Usman
Yasir Usman
TATony Abdo
Tony Abdo
FCFawad Chaudry
Fawad Chaudry
JKJean I. Keddissi
Jean I. Keddissi
HYHoussein Youness
Houssein Youness
A solitary pulmonary nodule (SPN) is a well-defined radiographic opacity up to 3 cm in diameter that is surrounded by unaltered aerated lung. Frequently, it is an incidental finding on chest radiographs and chest CT scans. Determining the probability of malignancy is the first step in the evaluation of SPN. This can be done by looking at specific risk factors and the rate of radiographic progression. Subsequent management is guided by the type of the nodule. Patients with solid nodules and low pretest probability can be followed radiographically; those with high probability, who are good surgical candidates, can be referred for surgical resection. When the pretest probability is in the intermediate range additional testing such as biopsy should be done. Various modalities are now available to obtain tissue diagnosis. These modalities differ in their yield and complication rate. Patients with SPN should be well informed of each approach's risks and benefits and should be able to make an informed decision regarding the different diagnostic and therapeutic modalities.

1 September 2017 in Journal of Thoracic Disease
Verified
Journal Article
Closed access
PDF file
HYHoussein Youness
Houssein Youness
JKJean Keddissi
Jean Keddissi
IBIlya Berim
Ilya Berim
AAAhmed Awab
Ahmed Awab
Although, bronchoscopy is a relatively safe procedure, small amount of bleeding in the airway can have serious consequences. Careful consideration of the risks of diagnostic and therapeutic bronchoscopic intervention can help minimize potential complications. With increasing number of patients using antiplatelet and anticoagulation therapies, strategies for minimizing thromboembolic and operative bleeding events need to be included in the risk and benefit analyses. Growing evidence suggests that aspirin is safe and does not increase bleeding during bronchoscopy. In addition, despite small studies reporting that it may be safe to perform bronchoscopic procedures that have low risk for bleeding such as endobronchial ultrasound with transbronchial needle aspiration on clopidogrel, it is still recommended to hold it for 7 days prior to performing elective bronchoscopy. It is recommended to hold vitamin K antagonist, as well as new oral anticoagulation agents prior to bronchoscopy. The timing for pre-procedural discontinuation of anticoagulation therapy and the decision to bridge depend on the agent used, the renal function and the thromboembolic risk. In this review article, we will discuss available data regarding management of anticoagulation and antiplatelet therapy as it applies to bronchoscopic procedures.

18 April 2022 in Diagnostics
Verified
Journal Article
Open access
PDF file
BJBlake Jacobs
Blake Jacobs
GSGhias Sheikh
Ghias Sheikh
HYHoussein Youness
Houssein Youness
JKJean I Keddissi
Jean I Keddissi
TATony Abdo
Tony Abdo
Malignant pleural effusion (MPE) is a common complication of thoracic and extrathoracic malignancies and is associated with high mortality. Treatment is mainly palliative, with symptomatic management achieved via effusion drainage and pleurodesis. Pleurodesis may be hastened by administering a sclerosing agent through a thoracostomy tube, thoracoscopy, or an indwelling pleural catheter (IPC). Over the last decade, several randomized controlled studies shaped the current management of MPE in favor of an outpatient-based approach with a notable increase in IPC usage. Patient preferences remain essential in choosing optimal therapy, especially when the lung is expandable. In this article, we reviewed the last 10 to 15 years of MPE literature with a particular focus on the diagnosis and evolving management.

14 January 2016 in Critical Care Research and Practice
Verified
Journal Article
Open access
PDF file
HYHoussein Youness
Houssein Youness
THTarek Al Halabi
Tarek Al Halabi
HHHussein Hussein
Hussein Hussein
AAAhmed Awab
Ahmed Awab
KJKellie Jones
Kellie Jones
JKJean Keddissi
Jean Keddissi
The maximal duration of cardiopulmonary resuscitation (CPR) is unknown. We report a case of prolonged CPR. We have then reviewed all published cases with CPR duration equal to or more than 20 minutes. The objective was to determine the survival rate, the neurological outcome, and the characteristics of the survivors.Measurements and Main Results. The CPR data for 82 patients was reviewed. The median duration of CPR was 75 minutes. Patients mean age was 43 ± 21 years with no significant comorbidities. The main causes of the cardiac arrests were myocardial infarction (29%), hypothermia (21%), and pulmonary emboli (12%). 74% of the arrests were witnessed, with a mean latency to CPR of 2 ± 6 minutes and good quality chest compression provided in 96% of the cases. Adjunct therapy included extracorporeal membrane oxygenation (18%), thrombolysis (15.8%), and rewarming for hypothermia (19.5%). 83% were alive at 1 year, with full neurological recovery reported in 63 patients.Conclusion. Patients undergoing prolonged CPR can survive with good outcome. Young age, myocardial infarction, and potentially reversible causes of cardiac arrest such as hypothermia and pulmonary emboli predict a favorable result, especially when the arrest is witnessed and followed by prompt and good resuscitative efforts.

10 December 2021 in Diagnostics
Verified
Journal Article
Open access
PDF file
HJHuzaifa A. Jaliawala
Huzaifa A. Jaliawala
SFSamid Muhammad Farooqui
Samid Muhammad Farooqui
KHKassem Harris
Kassem Harris
TATony Abdo
Tony Abdo
JKJean I Keddissi
Jean I Keddissi
HYHoussein Youness
Houssein Youness
Since the endobronchial ultrasound bronchoscope was introduced to clinical practice, endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) has become the procedure of choice to sample hilar and mediastinal adenopathy. Multiple studies have been conducted in the last two decades to look at the different technical aspects of the procedure and their effects on the final cytopathological yield. In addition, newer modes of ultrasound scanning and newer tools with the potential to optimize the selection and sampling of the target lymph node have been introduced. These have the potential to reduce the number of passes, reduce the procedure time, and increase the diagnostic yield, especially in rare tumors and benign diseases. Herein, we review the latest updates related to the technical aspects of EBUS-TBNA and their effects on the final cytopathological yield in malignant and benign diseases.