Herbert N. Hultgren

Herbert Nils Hultgren (August 29, 1917 – October 18, 1997) was an American Stanford Medical School cardiologist, researcher, teacher, author, Professor of Medicine (Cardiology) Emeritus, and pioneer in the study of high altitude medicine. He was the 1990 recipient of the distinguished Albion Walter Hewlett Award and author of the acclaimed 1997 text High Altitude Medicine.

Early life and education
Hultgren was born in 1917 in Santa Rosa, California, the son of Swedish immigrants Adolf and Hilda Hultgren. He attended Santa Rosa public schools. In 1932, Hultgren became the youngest Eagle Scout ever recognized in the state of California. At Santa Rosa High School, he was a straight-A student and member of the debate team. Following high school, he enrolled at Santa Rosa Junior College, where he competed on the swimming and track & field teams and graduated with academic honors.

In 1937, Hultgren was accepted to Stanford University. He earned his Bachelor of Arts in Basic Medical Sciences from Stanford, graduating Phi Beta Kappa in 1939 and received an M.D. from the Stanford University School of Medicine in 1943. He completed an internal medicine residency at Stanford before serving in the United States Army Medical Corps in Europe in 1944–45. He returned to Stanford for a pathology residency in 1946 and then spent a year as a research fellow in cardiology at the Thorndike Memorial Laboratory at the Harvard Medical School in Boston, Massachusetts.

Cardiology career
In 1948, Hultgren was hired to teach at the Stanford University School of Medicine. He founded the Division of Cardiology and established the first cardiac catheterization laboratory in Northern California. In 1955, he was named Chief of Cardiology.

In 1959, Stanford reorganized its School of Medicine and moved all of its operations from San Francisco to a new medical center on the Stanford campus. The revamped program featured a full-time faculty and redirection and commitment to research. Hultgren was instrumental in ensuring the success of the move and implementing the school's new focus and strategic direction.

Hultgren served as the Chief of Cardiology at the Palo Alto Veterans Administration Medical Center for 17 years beginning in 1967. In 1972, NASA hired Hultgren to serve as one of two cardiology consultants to the Apollo 16 space mission, a cautionary measure adopted by the space agency after multiple Apollo 15 astronauts had suffered arrhythmia and loss of potassium while on the Moon the previous year. In 1983, Stanford named him Professor of Medicine (Cardiology) Emeritus. Throughout his career, Hultgren received significant national recognition for his investigative research into the treatment of coronary artery disease (CAD).

High-altitude medicine pioneer
While at Stanford in the 1950s, Hultgren developed a research interest in congenital heart disease, in particular the problem of reduced oxygen content in arterial blood and its relation to the physiology of the circulation of blood through the lungs. He decided to couple this academic interest with his lifelong love and pursuit of climbing. He was an avid outdoorsman and skilled climber and mountaineer. In addition to the Sierra Nevada, Cascades, and Rockies, he climbed in Alaska, the Alps, Mexico, Ecuador, Peru, and the Himalayas.

During a trip to the Peruvian Andes in 1959, Hultgren encountered the condition of high-altitude pulmonary edema (HAPE), which was relatively unknown and yet to be described in U.S. medical literature. In 1961, he was the first American researcher to define the clinical effects of this altitude sickness, which he presented that year at the annual meeting of the Western Association of Physicians in Carmel, California. High altitude medicine and HAPE became his primary academic interest for the remainder of his career. During the next 10 years, he made many trips to the Chulec General Hospital in the Peruvian city of La Oroya (12,300 ft) to study HAPE, extensively chronicling his findings in U.S. academic medical publications.

Following his Andes excursions, Hultgren continued his study of high altitude illnesses at the White Mountain Barcroft Research Lab in the Sierra Nevada, on the peaks around Leadville, Colorado, and at the Mount Everest Base Camp in Nepal. In 1997, his extensive journey of worldwide breakthrough study and research was documented in the publication and release of his book High Altitude Medicine. It is widely considered the definitive text on the clinical aspects of common altitude illnesses.

Recognition, awards, and publications
In the early 1960s, Hultgren co-founded the Association of University Cardiologists, becoming its president in 1970. In 1970–71, he served as president of the Western Association of Physicians. From 1972 to 1975, he was chairman of the Sub-Specialty Board of Cardiovascular Disease of the American Board of Internal Medicine. He belonged to the American Alpine Club (AAC) for 34 years and was chairman of its Medical Committee from 1974 to 1980. In addition, Hultgren served as an active member and officer on over 15 national cardiology and internal medicine associations, boards and committees.

He was a member of the International Society for Mountain Medicine as well as the Wilderness Medical Society (WMS), receiving a Founders Award from the latter in 1995. He was also a lifelong member of the Sierra Club and California Academy of Sciences, an advocate and supporter of the Sempervirens Fund, and he served as an instructor for Mountain Travel Medical Seminars in Alaska, Patagonia, and Nepal.

In 1990, Hultgren received the Albion Walter Hewlett Award, an honor bestowed by his fellow Stanford Medical School faculty members for "the physician of care and skill who has committed to discovering and using biologic knowledge, wisdom, and compassion to return patients to productive lives." He was introduced at the awards ceremony by his longtime friend and heart transplant pioneer, Dr. Norman Shumway. In addition to High Altitude Medicine, Hultgren authored more than 300 scientific articles and abstracts, as well as 30 book chapters.

In 2003, Hultgren's wife, Barbara Brooke Hultgren, donated his research papers to the Mandeville Special Collections Library at the University of California, San Diego (UCSD), where they are available to students and the medical community. The “Herbert Hultgren Papers” primarily comprise original notes, notebooks, travel logs, correspondence, article drafts, and experiment, test, and patient observation data from Hultgren's multi-decade research and study of high altitude medicine and physiology. It also contains a complete set of his extensive U.S. medical journal article reprints.

Mountaineering and environmentalism
Hultgren had a significant love and respect for the Sierra Nevada Mountains. Beginning as an undergraduate at Stanford, he spent nearly 60 years climbing, backpacking, hiking, camping, fishing, and skiing there. He also climbed and backpacked extensively in Yosemite, Lassen, Sequoia, and Kings Canyon National Parks, and he scaled all of California’s 14ers, including numerous ascents of Mount Whitney and Mount Shasta. As an ardent student of natural history, he taught himself and learned the names of every common native Sierra species of mammal, reptile, bird, tree, plant, and wildflower.

During his service as a scoutmaster in the 1960s, he introduced many young men to the Sierra Nevada, teaching nature conservation and sustainability. Hultgren was a robust environmentalist. Among his favorite pursuits was an annual two-week Boy Scout troop backpack trip, crossing the Sierra Nevada from east to west and traversing sections of the John Muir Trail. In his later years, he met and became friends with former United States Secretary of Defense Robert McNamara, with whom he shared numerous Sierra treks.

Family life
In 1948, Hultgren married Stanford alumna Barbara Brooke of Pasadena, California. After initially settling in San Francisco, the couple moved to Mill Valley in 1951. When the Stanford University School of Medicine relocated in 1959, they built a home on the Stanford campus, where they raised their family. The couple had three children and one grandchild.

Career and death
Hultgren died in 1997 at the age of 80 after battling acute myeloid leukemia (AML). He was known as a modest, humble, skilled, and caring physician, exemplary teacher, researcher, and vigorous mentor.