Nilesh Mehta

Nilesh Mehta, MD

Director, Critical Care Nutrition; Associate Medical Director, MSICU; Director, Quality and Outcomes

Associate Professor in Anaesthesia, Harvard Medical School

    Contact: 617-355-7327
  • Fax: 617-730-0453

Medical Services


  • Critical Care
  • Critical Care Nutrition


  • Critical Care Medicine
  • Anesthesiology Perioperative and Pain Medicine


  • Nutrition Center
  • Medical Surgical Intensive Care Unit (MSICU)
  • Pediatric Critical Care Nutrition Program
To schedule an appointment: Call 617-355-7327

Experience and Education


Medical School

T. N. Medical College,

Bombay, India


King Edward VII Memorial Hospital,

Bombay, India

Residency, Pediatrics

Boston Combined Residency Program,

Boston, MA

Residency, Pediatric Medicine

North Thames Deanery,

Fellowship, Critical Care Medicine

Boston Children's Hospital,

Boston, MA

Fellowship, Pediatric Critical Care

St. Mary's Hospital,

London, United Kingdom


  • Pediatrics, Pediatric Critical Care


Nutrition therapy in Critical Ill Children
Energy and Protein Balance
Body composition

Mehta's Children's Research Page


Publications powered by Harvard Catalyst Profiles
  1. Jimenez L, Mehta NM, Duggan CP. Timing of the initiation of parenteral nutrition in critically ill children. Curr Opin Clin Nutr Metab Care. 2017 May; 20(3):227-231.
  2. Bechard LJ, Mehta NM. Nutritional Assessment Must be Prioritized for Critically Ill Children in the PICU. Crit Care Med. 2017 Apr; 45(4):e464.
  3. Smallwood CD, Mehta NM. Estimating Energy Expenditure in Critically Ill Children: Still Shooting in the Dark? J Pediatr. 2017 May; 184:10-12.
  4. Smallwood CD, Kheir JN, Walsh BK, Mehta NM. Accuracy of Oxygen Consumption and Carbon Dioxide Elimination Measurements in 2 Breath-by-Breath Devices. Respir Care. 2017 Apr; 62(4):475-480.
  5. Martinez EE, Pereira LM, Gura K, Stenquist N, Ariagno K, Nurko S, Mehta NM. Gastric Emptying in Critically Ill Children. JPEN J Parenter Enteral Nutr. 2017 Jan 01; 148607116686330.
  6. Lee JH, Rogers E, Chor YK, Samransamruajkit R, Koh PL, Miqdady M, Al-Mehaidib AI, Pudjiadi A, Singhi S, Mehta NM. Optimal nutrition therapy in paediatric critical care in the Asia-Pacific and Middle East: a consensus. Asia Pac J Clin Nutr. 2016 Dec; 25(4):676-696.
  7. Gusztak R, Hamilton S, Manning MJ, Lincoln P, Walsh B, Kohane D, Mehta N. 1074: SEVERITY OF HEMODYNAMIC INSTABILITY AROUND HIGH-DOSE VASOACTIVE SYRINGE CHANGES IN THE PICU. Crit Care Med. 2016 Dec; 44(12 Suppl 1):344.
  8. Mills K, French C, Baird C, Santos K, Tang X, Kheir J, Mehta N. 450: SUBOPTIMAL PROTEIN INTAKE MAY PROLONG CICU LENGTH OF STAY AND WORSEN NUTRITIONAL STATUS IN CHILDREN. Crit Care Med. 2016 Dec; 44(12 Suppl 1):189.
  9. Smallwood C, Martinez E, Quinn N, Ariagno K, Bechard L, Duggan C, Mehta N. 451: INACCURACY OF EXISTING FAT-FREE MASS EQUATIONS IN PEDIATRICS-AND A NEW MACHINE LEARNING METHOD. Crit Care Med. 2016 Dec; 44(12 Suppl 1):189.
  10. Ariagno K, Armstrong L, Smallwood C, Arbuthnot M, Hong C, Jaksic T, Mehta N. 478: PROTEIN DELIVERY DURING THE FIRST WEEK OF PEDIATRIC ECMO: IMPACT ON OUTCOMES. Crit Care Med. 2016 Dec; 44(12 Suppl 1):196.
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  12. French C, Mills K, Baird C, Santos K, Tang X, Kheir J, Mehta N. 462: BEDSIDE VCO2 AS A GUIDE TO INDIVIDUALIZED ENERGY PRESCRIPTION IN VENTILATED CHILDREN IN THE CICU. Crit Care Med. 2016 Dec; 44(12 Suppl 1):192.
  13. Fullerton BS, Sparks EA, Khan FA, Fisher JG, Anzaldi R, Scoville MR, Yu YM, Wagner DA, Jaksic T, Mehta NM. Whole Body Protein Turnover and Net Protein Balance After Pediatric Thoracic Surgery: A Noninvasive Single-Dose 15N Glycine Stable Isotope Protocol With End-Product Enrichment. JPEN J Parenter Enteral Nutr. 2016 Nov 15.
  14. Velazco CS, Zurakowski D, Fullerton BS, Bechard LJ, Jaksic T, Mehta NM. Nutrient delivery in mechanically ventilated surgical patients in the pediatric critical care unit. J Pediatr Surg. 2017 Jan; 52(1):145-148.
  15. Martinez EE, Ariagno KA, Stenquist N, Anderson D, Muñoz E, Mehta NM. Energy and Protein Delivery in Overweight and Obese Children in the Pediatric Intensive Care Unit. Nutr Clin Pract. 2017 Jun; 32(3):414-419.
  16. Mehta NM, Bechard LJ. The authors reply. Crit Care Med. 2016 Oct; 44(10):e1007-8.
  17. Albert BD, Zurakowski D, Bechard LJ, Priebe GP, Duggan CP, Heyland DK, Mehta NM. Enteral Nutrition and Acid-Suppressive Therapy in the PICU: Impact on the Risk of Ventilator-Associated Pneumonia. Pediatr Crit Care Med. 2016 Oct; 17(10):924-929.
  18. Mehta NM. Benefits of late parenteral nutrition in critically ill children. J Pediatr. 2016 Sep; 176:221-4.
  19. Martinez EE, Mehta NM. The science and art of pediatric critical care nutrition. Curr Opin Crit Care. 2016 Aug; 22(4):316-24.
  20. Bechard LJ, Duggan C, Touger-Decker R, Parrott JS, Rothpletz-Puglia P, Byham-Gray L, Heyland D, Mehta NM. Nutritional Status Based on Body Mass Index Is Associated With Morbidity and Mortality in Mechanically Ventilated Critically Ill Children in the PICU. Crit Care Med. 2016 Aug; 44(8):1530-7.
  21. Grippa RB, Silva PS, Barbosa E, Bresolin NL, Mehta NM, Moreno YM. Nutritional status as a predictor of duration of mechanical ventilation in critically ill children. Nutrition. 2017 Jan; 33:91-95.
  22. Compher C, Mehta NM. Diagnosing Malnutrition: Where Are We and Where Do We Need to Go? J Acad Nutr Diet. 2016 05; 116(5):779-84.
  23. Moreno YM, Hauschild DB, Barbosa E, Bresolin NL, Mehta NM. Problems With Optimal Energy and Protein Delivery in the Pediatric Intensive Care Unit. Nutr Clin Pract. 2016 Oct; 31(5):673-80.
  24. Strychowsky JE, Albert D, Chan K, Cheng A, Daniel SJ, De Alarcon A, Garabedian N, Hart C, Hartnick C, Inglis A, Jacobs I, Kleinman ME, Mehta NM, Nicollas R, Nuss R, Pransky S, Russell J, Rutter M, Schilder A, Thompson D, Triglia JM, Volk M, Ward B, Watters K, Wyatt M, Zalzal G, Zur K, Rahbar R. International Pediatric Otolaryngology Group (IPOG) consensus recommendations: Routine peri-operative pediatric tracheotomy care. Int J Pediatr Otorhinolaryngol. 2016 Jul; 86:250-5.
  25. Mehta NM. Parenteral Nutrition in Critically Ill Children. N Engl J Med. 2016 Mar 24; 374(12):1190-2.
  26. Kerklaan D, Fivez T, Mehta NM, Mesotten D, van Rosmalen J, Hulst JM, Van den Berghe G, Joosten KF, Verbruggen SC. Worldwide Survey of Nutritional Practices in PICUs. Pediatr Crit Care Med. 2016 Jan; 17(1):10-8.
  27. Wong JJ, Ong C, Han WM, Mehta NM, Lee JH. Survey of contemporary feeding practices in critically ill children in the Asia-Pacific and the Middle East. Asia Pac J Clin Nutr. 2016; 25(1):118-25.
  28. Smallwood CD, Martinez EE, Mehta NM. A Comparison of Carbon Dioxide Elimination Measurements Between a Portable Indirect Calorimeter and Volumetric Capnography Monitor: An In Vitro Simulation. Respir Care. 2016 Mar; 61(3):354-8.
  29. Mehta NM, Newman H, Tarrant S, Graham RJ. Nutritional Status and Nutrient Intake Challenges in Children With Spinal Muscular Atrophy. Pediatr Neurol. 2016 Apr; 57:80-3.
  30. Martinez EE, Douglas K, Nurko S, Mehta NM. Gastric Dysmotility in Critically Ill Children: Pathophysiology, Diagnosis, and Management. Pediatr Crit Care Med. 2015 Nov; 16(9):828-36.
  31. Mehta NM. Early Enteral Nutrition in the PICU: Should We Trust Our Gut? Pediatr Crit Care Med. 2015 Oct; 16(8):786-9.
  32. Mehta NM, Sharma S, Laussen PC. Unplanned extubation: securing the tool of our trade. Intensive Care Med. 2015 Nov; 41(11):1983-5.
  33. Martinez EE, Bechard LJ, Smallwood CD, Duggan CP, Graham RJ, Mehta NM. Impact of Individualized Diet Intervention on Body Composition and Respiratory Variables in Children With Respiratory Insufficiency: A Pilot Intervention Study. Pediatr Crit Care Med. 2015 Jul; 16(6):e157-64.
  34. Mehta NM, Bechard LJ, Zurakowski D, Duggan CP, Heyland DK. Adequate enteral protein intake is inversely associated with 60-d mortality in critically ill children: a multicenter, prospective, cohort study. Am J Clin Nutr. 2015 Jul; 102(1):199-206.
  35. Smallwood CD, Gouldstone A, Mehta NM. Validation of the V(max) metabolic cart in a simulated pediatric model. JPEN J Parenter Enteral Nutr. 2015 May; 39(4):387-8.
  36. Mehta NM. Bringing back the (weighing) balance in the PICU--for good measure. Pediatr Crit Care Med. 2015 Mar; 16(3):301-2.
  37. Martinez EE, Ariagno K, Arriola A, Lara K, Mehta NM. Challenges to nutrition therapy in the pediatric critically ill obese patient. Nutr Clin Pract. 2015 Jun; 30(3):432-9.
  38. Smallwood CD, Walsh BK, Bechard LJ, Mehta NM. Carbon dioxide elimination and oxygen consumption in mechanically ventilated children. Respir Care. 2015 May; 60(5):718-23.
  39. Mehta NM. Energy expenditure: how much does it matter in infant and pediatric chronic disorders? Pediatr Res. 2015 Jan; 77(1-2):168-72.
  40. Martinez EE, Smallwood CD, Bechard LJ, Graham RJ, Mehta NM. Metabolic assessment and individualized nutrition in children dependent on mechanical ventilation at home. J Pediatr. 2015 Feb; 166(2):350-7.
  41. Bairdain S, Khan FA, Fisher J, Zurakowski D, Ariagno K, Cauley RP, Zalieckas J, Wilson JM, Jaksic T, Mehta NM. Nutritional outcomes in survivors of congenital diaphragmatic hernia (CDH)-factors associated with growth at one year. J Pediatr Surg. 2015 Jan; 50(1):74-7.
  42. Hamilton S, McAleer DM, Ariagno K, Barrett M, Stenquist N, Duggan CP, Mehta NM. A stepwise enteral nutrition algorithm for critically ill children helps achieve nutrient delivery goals*. Pediatr Crit Care Med. 2014 Sep; 15(7):583-9.
  43. Mehta NM, Raphael B, Guteirrez IM, Quinn N, Mitchell PD, Litman HJ, Jaksic T, Duggan CP. Comparison of body composition assessment methods in pediatric intestinal failure. J Pediatr Gastroenterol Nutr. 2014 Jul; 59(1):99-105.
  44. Duro D, Mitchell PD, Mehta NM, Bechard LJ, Yu YM, Jaksic T, Duggan C. Variability of resting energy expenditure in infants and young children with intestinal failure-associated liver disease. J Pediatr Gastroenterol Nutr. 2014 May; 58(5):637-41.
  45. Martinez EE, Bechard LJ, Mehta NM. Nutrition algorithms and bedside nutrient delivery practices in pediatric intensive care units: an international multicenter cohort study. Nutr Clin Pract. 2014 Jun; 29(3):360-7.
  46. Mehta NM, Smallwood CD, Graham RJ. Current applications of metabolic monitoring in the pediatric intensive care unit. Nutr Clin Pract. 2014 Jun; 29(3):338-47.
  47. Mehta NM, Smallwood CD, Joosten KF, Hulst JM, Tasker RC, Duggan CP. Accuracy of a simplified equation for energy expenditure based on bedside volumetric carbon dioxide elimination measurement--a two-center study. Clin Nutr. 2015 Feb; 34(1):151-5.
  48. Mehta NM. Feeding the gut during critical illness--it is about time. JPEN J Parenter Enteral Nutr. 2014 May; 38(4):410-4.
  49. Bechard LJ, Rothpletz-Puglia P, Touger-Decker R, Duggan C, Mehta NM. Influence of obesity on clinical outcomes in hospitalized children: a systematic review. JAMA Pediatr. 2013 May; 167(5):476-82.
  50. Radman M, Mack R, Barnoya J, Castañeda A, Rosales M, Azakie A, Mehta N, Keller R, Datar S, Oishi P, Fineman J. The effect of preoperative nutritional status on postoperative outcomes in children undergoing surgery for congenital heart defects in San Francisco (UCSF) and Guatemala City (UNICAR). J Thorac Cardiovasc Surg. 2014 Jan; 147(1):442-50.
  51. Smallwood CD, Mehta NM. Accuracy of gas exchange monitoring during noninvasive ventilation: an in vitro metabolic simulation. JPEN J Parenter Enteral Nutr. 2014 Jan; 38(1):86-91.
  52. Mehta NM, Corkins MR, Lyman B, Malone A, Goday PS, Carney LN, Monczka JL, Plogsted SW, Schwenk WF. Defining pediatric malnutrition: a paradigm shift toward etiology-related definitions. JPEN J Parenter Enteral Nutr. 2013 Jul; 37(4):460-81.
  53. Smallwood CD, Mehta NM. Gas exchange measurement during pediatric mechanical ventilation--agreement between gas sampling at the airway and the ventilator exhaust. Clin Nutr. 2013 Dec; 32(6):988-92.
  54. Mehta NM. The Goldilocks conundrum for optimal macronutrient delivery in the PICU--too much, too little, or just right? JPEN J Parenter Enteral Nutr. 2013 Mar; 37(2):178-80.
  55. Mehta NM, Bechard LJ, Cahill N, Wang M, Day A, Duggan CP, Heyland DK. Nutritional practices and their relationship to clinical outcomes in critically ill children--an international multicenter cohort study*. Crit Care Med. 2012 Jul; 40(7):2204-11.
  56. Mehta NM, Costello JM, Bechard LJ, Johnson VM, Zurakowski D, McGowan FX, Laussen PC, Duggan CP. Resting energy expenditure after Fontan surgery in children with single-ventricle heart defects. JPEN J Parenter Enteral Nutr. 2012 Nov; 36(6):685-92.
  57. Smallwood CD, Mehta NM. Accuracy of abbreviated indirect calorimetry protocols for energy expenditure measurement in critically ill children. JPEN J Parenter Enteral Nutr. 2012 Nov; 36(6):693-9.
  58. Skillman HE, Mehta NM. Nutrition therapy in the critically ill child. Curr Opin Crit Care. 2012 Apr; 18(2):192-8.
  59. Bechard LJ, Parrott JS, Mehta NM. Systematic review of the influence of energy and protein intake on protein balance in critically ill children. J Pediatr. 2012 Aug; 161(2):333-9.e1.
  60. Mehta NM, Bechard LJ, Dolan M, Ariagno K, Jiang H, Duggan C. Energy imbalance and the risk of overfeeding in critically ill children. Pediatr Crit Care Med. 2011 Jul; 12(4):398-405.
  61. Mehta NM, Turner D, Walsh B, Zurakowski D, Betit P, Wilson J, Arnold JH. Factors associated with survival in pediatric extracorporeal membrane oxygenation--a single-center experience. J Pediatr Surg. 2010 Oct; 45(10):1995-2003.
  62. Mehta NM, McAleer D, Hamilton S, Naples E, Leavitt K, Mitchell P, Duggan C. Challenges to optimal enteral nutrition in a multidisciplinary pediatric intensive care unit. JPEN J Parenter Enteral Nutr. 2010 Jan-Feb; 34(1):38-45.
  63. Mehta NM, Duggan CP. Nutritional deficiencies during critical illness. Pediatr Clin North Am. 2009 Oct; 56(5):1143-60.
  64. Mehta NM. Approach to enteral feeding in the PICU. Nutr Clin Pract. 2009 Jun-Jul; 24(3):377-87.
  65. Mehta NM, Compher C. A.S.P.E.N. Clinical Guidelines: nutrition support of the critically ill child. JPEN J Parenter Enteral Nutr. 2009 May-Jun; 33(3):260-76.
  66. Mehta NM, Bechard LJ, Leavitt K, Duggan C. Cumulative energy imbalance in the pediatric intensive care unit: role of targeted indirect calorimetry. JPEN J Parenter Enteral Nutr. 2009 May-Jun; 33(3):336-44.
  67. Mehta NM, Bechard LJ, Leavitt K, Duggan C. Severe weight loss and hypermetabolic paroxysmal dysautonomia following hypoxic ischemic brain injury: the role of indirect calorimetry in the intensive care unit. JPEN J Parenter Enteral Nutr. 2008 May-Jun; 32(3):281-4.
  68. Mehta NM, Halwick DR, Dodson BL, Thompson JE, Arnold JH. Potential drug sequestration during extracorporeal membrane oxygenation: results from an ex vivo experiment. Intensive Care Med. 2007 Jun; 33(6):1018-24.
  69. Mehta NM, Arnold JH. Genetic polymorphisms in acute respiratory distress syndrome: new approach to an old problem. Crit Care Med. 2005 Oct; 33(10):2443-5.
  70. Mehta NM, Arnold JH. Mechanical ventilation in children with acute respiratory failure. Curr Opin Crit Care. 2004 Feb; 10(1):7-12.
  71. Thomas RM, Mehta NM. Cases of congenital rubella may be the tip of the iceberg. BMJ. 2002 Sep 14; 325(7364):596.
  72. Mehta NM, Thomas RM. Antenatal screening for rubella-infection or immunity? BMJ. 2002 Jul 13; 325(7355):90-1.
  73. Mehta NM, Nicholl RM. Positioning of long lines. Arch Dis Child Fetal Neonatal Ed. 2002 Jan; 86(1):F68-9.
  74. Mehta N, Stone J, Whitelaw A. Practical management of hyperinsulinism in infancy. Arch Dis Child Fetal Neonatal Ed. 2001 May; 84(3):F218.
  75. Mehta NM, Hartnoll G. Congenital CMV with callosal lipoma and agenesis. Pediatr Neurol. 2001 Mar; 24(3):222-4.
  76. Mehta N, Macintosh I, Rivers R, Nadel S. Acute chest syndrome of sickle cell disease. J Pediatr. 2000 Oct; 137(4):589; author reply 590.
  77. Mehta N, Levin M. Management and prevention of meningococcal disease. Hosp Pract (1995). 2000 Aug 15; 35(8):75-6, 79-82, 85-6.
  78. Mehta N, DeMunter C, Habibi P, Nadel S, Britto J. Short-term propofol infusions in children. Lancet. 1999 Sep 04; 354(9181):866-7.
To schedule an appointment: Call 617-355-7327


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