More About Our Medical Staff

 Alexander Drtil, M.D.

HOSPITAL AFFILIATIONS

  • Memorial Herman Hospital System – Memorial City Hospital, Southwest Hospital, Hermann Hospital, Northwest, Katy Hospital

  • Methodist Hospital System – Sugarland Hospital, West Houston Hospital, Willowbrook Hospital

  • West Houston Medical Center

  • Christus St. Catherine's Hospital

  • North Cypress Medical Center

  • Cypress Fairbanks Medical Center

EDUCATION

  • Fellowship in Clinical Cardiac Electrophysiology

  • Fellowship in Cardiovascular Diseases. The University of Texas Health Science • Center at Houston and Hermann Hospital, Houston, Texas

  • Chief Resident in Internal Medicine. The University of Texas Health Science Center at Houston and the University of Texas Medical School at Houston

  • Internship and Residency in Internal Medicine. The University of Texas Health Science Center at Houston and the University of Texas Medical School at Houston

  • The University of Texas Medical School at Houston, Houston, TX

  • Midwestern State University, Wichita Falls, TX

CERTIFICATIONS

  • November 2005. American Board of Internal Medicine/Recertification in Cardiovascular Diseases

  • November 2000. American Board of Internal Medicine/Clinical Cardiac Electrophysiology

  • November 1995. American Board of Internal Medicine/Cardiovascular Diseases

  • September 1991. American Board of Internal Medicine

  • February 1989. Texas Licensure (H38l2)

  • June 1988. Federal Licensure Examination

PUBLICATIONS AND LECTURES
Feld Steven, Kjellgren Olle, Sweeney Michael, Drtil Alexander, Anderson H. Vernon, Schroth George, Tauss Nancy, Taegtmeyer Heinrich, Smalling Richard. Diffuse Vasospasm Following Stenting of a Free Gastroepiploic Artery Graft: Resolution With Balloon Angioplasty and intensive medical Therapy. Catheterization and Cardiovascular Diagnosis 36:352-355 (1995).

Shih Hue-The, Drtil Alexander, Jalal Sohail, Dougherty Anne, Wolbrette Deborah, Naccarelli Gerald. Atrioventricular Block with Prolonged HA Interval and Cycle Length During Slow-Fast Atrioventricular Nodal Reentrant Tachycardia: Evidence fro His Bundle as the Distal insertion Site of the Slow Pathway (Abstract). Circulation 1994; 90(4), Part 2: 1-215.

Drtil Alexander, Jalal Sohail, Dougherty Anne, Wolbrette Deborah, Naccarelli Gerald, Shih, Hue-The. Randomized Comparison of "Posterior" -vs. "Inferior" Approaches for Radiofrequency Catheter Atrioventricular ¬Nodal Modification (Abstract). PACE 1995; 18, Part II: 918.

Wolbrette Deborah, Naccarelli Gerald, Dougherty Anne, Shih Hue-The, Jalal Sohail, Drtil Alexander, Beveridge Thomas, Montgomery Baxter,
Patoc Torii. WorIdwide Jewel Investigators: Pectoral vs. Abdominal ICD Implant - Is There a Difference in Patient Morbidity? (Abstract) - presented at the Xth WorId Symposium on Cardiac Pacing and Electrophysiolgy in Buenos Aires, Argentina, October 1995

Frontiers in Interventional Cardiology: Radiofrequency Catheter Ablation of Supraventricular Tachycardia - presented as part of a Mini-Symposium of Clinical Cardiac Electrophysiology during the Frontiers in Interventional Cardiology Conference May 2000 and in Houston, TX,  May 2001

Advances in Clinical Cardiac Electrophysiology Conference: Iatrogenic Cardiac Desynchronization and Indications for Resynchronization Therapy.  Houston Arrhythmia Associates, Galveston Island, TX, June 2005

Memorial Hermann Heart and Vascular Institute Annual Heart Symposium:  Innovative Treatments for Heart Failure and Palpitations (Invited speaker)   Houston, TX, February 2006

Cardiovascular Screening to Prevent Sudden Cardiac Death in Athletes presented at the Covenant Heart Institute Conference at Tamaya, Albuquerque, NM, May 2006
 

OTHER PROJECTS AND WORKS IN PROGRESS 
1.  Medtronic Subcutaneous vs. Submuscular Pectoral ICD Implantation Study: Defibrillation Threshold Determination.  08/01/1996 to 12/01/1997

2.  Evaluation of Efficacy of the Cordis Webster Diagnostic/Ablation Thermocouple Catheter for, Radiofrequency Current Ablation.  05/31/1997 to 09/30/1997

3.  Medtronic Radiofrequency Ablation Catheters: Performer Learning
Curve Study.  07/01/1996 to 10/05/1996

4.  Medtronic Model Number 6945 RV-SVC ICD Lead Study. 11/28/1997 to 03/03/1998

5.  The Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT). 09/16/1999 to present

6.  St. Jude lCD Study: Effects of High Voltage Shocks on Morphology
Discrimination Using a Dedicated Bipolar Lead.  04/10/2000 to 07/04/2003

7.  St. Jude ICD Study: The Effect of Sensing Configurations on
Morphology Discrimination Performance.  04/10/2000 to 06/30/2004

8.  Biotronik Phylax A V ICD Clinical Investigation Study.  01/31/2000 to 09/01/2001

9.  Medtronic Model 6944 RV-SVC Lead Study.  02/01/1999 to present

10. Biotronik Tachos ICD Clinical Investigation Study 2001-2002.

11.  Guidant ICD Study:  Ventricular Arrhythmia Suppression Trial (VAST).  06/26/2003 to 03/04/2005.

11. Biotronik ICD Study:  Protos Heart Rate Distribution Study (PHD).  07/25/2003 to 11/04/2004

12.  Guidant Endotak Reliance® Lead Study:  Reflex trial (the  Evaluation of the Electrical Performance and handling of the Endotak Reliance® lead) 07/08/2004 to 07/18/2005

13.  Medtronic ICD Study:  INvestigation SIGnificant ICD Heart Therapies (INSIGHT).  03/29/2004 to 06/02/2005

14.  St. Jude Medical ICD Registry:  Advancements in ICD Therapy (ACT).  02/10/2005 to present

15.  Medtronic PPM & ICD Trial (OMNI):  Object is to Characterize Therapy and Diagnostic Utilization in Study Participants.  01/12/2006 to present


Dr. Jalal Headshot.jpg

Sohail Jalal, M.D.

HOSPITAL AFFILIATIONS

  • Memorial Herman Hospital System – Memorial City Hospital, Southwest Hospital, Hermann Hospital, Northwest, Katy Hospital

  • Methodist Hospital System – Sugarland Hospital, West Houston Hospital, Willowbrook Hospital

  • West Houston Medical Center

  • Christus St. Catherine's Hospital

  • North Cypress Medical Center

  • Cypress Fairbanks Medical Center

EDUCATION

  • House Physician May Hospital. Lahore, Pakistan

  • House Surgeon May Hospital. Lahore, Pakistan

  • Internship in Internal Medicine. Cook County Hospital. Chicago, Illinois

  • Residency in Internal Medicine. University of Missouri Affiliated Hospitals. Kansas City, Missouri

  • Fellowship in Cardiology/Electrophysiology. University of Colorado Health Science Center. Denver, Colorado

  • Fellowship electrophysiology. Case Western University. Cleveland, OH

CERTIFICATIONS

  • American Board of Internal Medicine

  • American Board of Cardiovascular Diseases

  • American Board of Clinical Electrophysiology

PROFESSIONAL ORGANIZATION

  • American Heart Association

  • Houston Electrophysiology Society

  • Harris County Medical Society

  • American Medical Association

  • Texas Medical Association

TEACHING EXPERIENCE

  • Teaching rounds in Cardiology Inpatient and Consult Services  
    Introduction to Clinical Medicine Lecturer

  • ECG Internship

  • Cardiology/Fellows Core Lecture

ADMINISTRATIVE RESPONSIBILITIES

  • Columbia West Houston Medical Center. 1996 – 1997. Director – Interventional Electrophysiology Lab

  • Hermann Hospital. 1995 – 1996. Director – Electrophysiology Lab

    PRESENTATIONS
    Combination Quinidine Mexiletine Therapy Does Not Suppress Ventricular Tachycardia Induction When IV Procainamide First Fails. 64th Sci Sessions, American Heart Association, November 11, 1991, Anaheim, Ca.

PUBLICATIONS

1. Jalal Sohail, Reiter MJ, Easley A, Williams G. Effects of Acute Ventricular Dilation on Ventricular Fibrillation Threshold in Isolated Rabbit Hearts. Amer J. Physiol: Heart and Circul Physiol, 1992, Vol 263, pages H 1306-H 131 O.

2. Naccarelli GV, Dougherty AH, Jalal S, Shih HT. Antiarrhythmic treatment of patient with left ventricular dysfunction. New Trends in Arrhythmia 1991; 7:321-336.

3. Naccarelli GV, Dougherty AH, Jalal S, Shih HT, Wolbrette O, Wiggins S, Gilman J.The cardiac arrhythmia suppression trial CAST: Its effect on antiarrhythmic development and prescribing habits of physicians.. Hosp Form.

4. Naccarelli GV, Dougherty AH, Jalal S, Shih H.T. Types 1A antiarrhythmic agents in the post-CAST era. Hosp Form.

5. Jalal Sohail, Naccarelli GV, Dougherty AH, Shih HT.  Is electrophysiologic testing necessary for risk stratification of the post MI patient?  JMI.

6. Jalal Sohail, Naccarelli GV, Dougherty AH, Shih HT. Ecaninide: An Update post-CAST. J Cardiovasc Electrophysiology.

7. Shih HT, Drtil A, Jalal Sohail, Dougherty AH, Wolbrette O, Naccarelli GV. Atrioventricular block with prolonged H.A interval and cycle length during slow-fast atrioventricular nodal reentrant tachycardia: Evidence for  His bundle as the distal insertion site of the slow pathway. Circulation 90:8.215, 1994.

8. Wolbrette O, Naccarelli GV, Dougherty AH, Shih HT, Jalal Sohail, Drtil A., Beveridge T, Montgomery B, Patock T, Worldwide Jewel Investigators.Pectoral versus abdominal ICD implant-Is there a difference in patient morbidity?
    PACE 18: 1780; 1995.

9. Naccarelli GV, Dougherty AH, Jalal S, Shih HT, Wolbrette D. Paroxysmal supraventircular tachycardia: Compartive role of therapeutic methods-drugs, devices and ablation. In Interventional Electrophysiology: A Textbook. Saksena S. luderitz B. (Editors), Futura Publishing Co., Inc. Armonk, N.Y., 1995, pp 381-390.

10. Jalal S, Naccarelli GV, Dougherty AH, Shih, HT. Role of electrophysiologic testing after MI J Myocardial Ischemia 6:30-40, 1994.

11. Jalal S. Naccarelli GV, Wolbrette O, Dougherty AH. Maintaining sinus rhythm after atrial fibrillation. Choices in Cardiology, 1993; 7(12): 386.389

12. Naccarelli GV, Dougherty AH, Wolbrette O, Jalal S, Shih HT. Advances in implantable cardioverter defibrillators. In: Clinical Cardiac Electrophysiology, Philadelphia, J.B, Lippincott Co., 1994.

13. Naccarelli GV, Shih HT, Jalal S. Sinus node reentry and atrial tachycardias. In: From Cell to Bedside. Zipes DP, Jalife J. (Eds). W. B. Saunders Co., Philelphia, 1995, pages 607-61

OTHER PROJECTS AND WORKS IN PROGRESS
1. Medtronics Subcutaneous Versus Submuscular Pectoral ICD  Implantation Defibrillation Threshold Determination. 08/01/1996 – 12/01/1997.

2. Evaluation of Efficacy of the Coprdis Webster Diagnostic /Ablation Themocouple Catheter for Radiofrequency Catheter Ablation. 5/31/1997 to 09/30/1997.

3. Medtronic Radiofrequency Ablation Catheters: Performer Learning Curve Study. 07/01/1996 to 10/05/1996.

4. Medtronical Model Number 6945 RV-SVC ICD Lead Study. 11/28/1997 to 03/03/1998

5. The Sudden Cardiac Death in Heart Failure (SCD-HeFT) Trial. 09/16/1999 to present.

6. St. Jude ICD Study: Effects of High Voltage Shocks on Morphology Discrimination Using a Dedicated Bipolar Lead. 04/10/2000 to present.

7. St. Jude ICD Study: The Effect of Sensing Configurations on Morphology Discrimination Performance. 4/10/2000 to present.

8. Biotronik Phylax A V Clinical Investigation Study. 01/31/2000 to present.

9. Medtronic Model 6944 RV-SVC lead Study. 02/01/99 to present.




Dr. Amir Azeem

HOSPITAL AFFILIATIONS

  • Memorial Herman Hospital System – Memorial City Hospital, Southwest Hospital, Hermann Hospital, Northwest, Katy Hospital

  • Methodist Hospital System – Sugarland Hospital, West Houston Hospital, Willowbrook Hospital

  • West Houston Medical Center

  • Christus St. Catherine's Hospital

  • North Cypress Medical Center

  • Cypress Fairbanks Medical Center

EDUCATION

  • Fellowship in Clinical Cardiac Electrophysiology. Wake Forest School of Medicine, Winston-Salem, NC

  • Fellowship in Clinical Cardiovascular Disease. University of Mississippi Medical Center, Jackson, MS

  • Residency in Internal Medicine. Michigan State University, East Lansing, MI

  • Internship in Internal Medicine, Michigan State University, East Lansing, MI.\

  • Master of Science in Clinical and Population Translational Sciences. Wake Forest University, Winston-Salem, NC

  • Dow Medical College, University of Karachi, Pakistan

CERTIFICATIONS

  • American Board of Internal Medicine- Clinical Cardiac Electrophysiology

  • National Board of Echocardiography- ASCeXAM

  • American Board of Internal Medicine- Cardiovascular Disease

  • American Board of Internal Medicine- Internal Medicine

TEACHING EXPERIENCE

  • Assistant Professor- Department of Internal Medicine- Wake Forest School of Medicine

  • Clinical Instructor- Department of Medicine- Michigan State University 

PUBLICATIONS 

  • Amanda J. Cox (co-author), Amir Azeem (co-author), Joseph Yeboah, Elsayed Z. Soliman, Shivani R. Aggarwal, Alain G. Bertoni, J. Jeffrey Carr, Barry I. Freedman, David M. Herrington, Donald W. Bowden. Heart Rate–Corrected QT Interval Is an Independent Predictor of All-Cause and Cardiovascular Mortality in Individuals With Type 2 Diabetes: The Diabetes Heart Study. Diabetes Care. 2014 May;37(5):1454-61. doi: 10.2337/dc13-1257. Epub 2014 Feb 26.

  • Amir Azeem, Solomon K Musani, Walter L Beard, Thomas H Mosley, Kenneth R Butler and Ervin R Fox Abstract MP32: Long Term Prediction of Incident Heart Failure in African Americans - The Atherosclerosis Risk in Communities Study Circulation. 2016;133:AMP32, published online before print March 1, 2016

  • Amir Azeem, Walter L Beard, Solomon Musani, Kenneth R Butler, Thomas H Mosley and Ervin R Fox Abstract MP35: Relation of Left Ventricular Structure to Incident Heart Failure in African Americans: The Jackson Cohort of the Atherosclerosis Risk in Communities Study Circulation. 2016;133:AMP35, published online before print March 1, 2016

  • Azeem A, Yeboah J, Bertoni A, Burke G, Turkbey E, Szklo M, Herrington D. Association of hemoglobin A1C with cardiovascular disease and all-cause mortality in individuals without diabetes--the Multi-Ethnic Study of Atherosclerosis [abstract]. Circulation. 2013;127(12 Suppl):AP278.

  • Virgadamo S, Azeem A, Yeboah J, Rodriguez CJ, Cox AJ, Bowden DW, Herrington DM. Premature ventricular complexes predict mortality in a population with type 2 diabetes--the Diabetes Heart Study [abstract]. Circulation. 2013;127(12 Suppl):AP049.

  • Azeem A, Yeboah J, Soliman EZ, Cox A, Bertoni A, Herrington DM, Bowden DW. Heart rate corrected QT interval is an independent predictor of all-cause mortality in a diabetic population--the Diabetes Heart Study [abstract]. Circulation. 2012;126(21 Suppl):A15550.