2015
Heart rate and respiratory response to doxapram in patients with panic disorder
Martinez JM, Garakani A, Aaronson CJ, Gorman JM. Heart rate and respiratory response to doxapram in patients with panic disorder. Psychiatry Research 2015, 227: 32-38. PMID: 25819170, PMCID: PMC4420657, DOI: 10.1016/j.psychres.2015.03.001.Peer-Reviewed Original ResearchConceptsPD patientsLF/HFPanic disorderHealthy controlsAnticipatory anxietyPD subjectsParasympathetic componentRespiratory responsesLF/HF ratioSensation of dyspneaHeart rate variability indicesHigher sympathetic activityInjection of salinePanic statesSympathetic activityRespiratory abnormalitiesBrain stemRespiratory stimulantHeart rateParasympathetic responsePanic attacksPatientsExaggerated fear responsePanic symptomsHF ratio
2010
Heart Rate and Blood Pressure Changes During Autonomic Nervous System Challenge in Panic Disorder Patients
Martinez JM, Garakani A, Kaufmann H, Aaronson CJ, Gorman JM. Heart Rate and Blood Pressure Changes During Autonomic Nervous System Challenge in Panic Disorder Patients. Psychosomatic Medicine 2010, 72: 442-449. PMID: 20368476, DOI: 10.1097/psy.0b013e3181d972c2.Peer-Reviewed Original ResearchConceptsLower heart rate variabilityMean diastolic blood pressureHigher heart rateHeart rate variabilityDiastolic blood pressureBlood pressureHealthy controlsHeart ratePanic disorder patientsPD patientsLF/HFOrthostatic challengeSympathovagal balanceDisorder patientsHigher mean diastolic blood pressureGreater cardiac riskIllness severity ratingsLess ill patientsSystolic blood pressureBlood pressure changesSeverity of illnessHigher low-frequency componentsAutonomic nervous systemIll patientsCardiac risk