Biomaterial Database

Influence of posture on cardiorespiratory reflexes in normal subjects and patients with diabetes mellitus. 1992

X Navarro, and W R Kennedy

Department of Cell Biology and Physiology, Universitat Autònoma de Barcelona, Bellaterra, Spain.

This study was designed to assess the effect of patient posture, either sitting or supine, on the results and diagnostic yield of tests of cardiorespiratory reflexes on 25 normal subject controls and 128 patients with diabetes mellitus. The heart rate changes during slow breathing at 6 per minute (delta R6) and during a Valsalva manoeuvre (highest heart rate during manoeuvre divided by lowest heart rate within 30 s after manoeuvre; Valsalva ratio) were measured from the electrocardiographic signal and tachometry. In control subjects, heart rate changes during slow breathing averaged 25.0 when sitting and 21.3 when supine (p < 0.01); Valsalva ratio averaged 1.90 and 1.83 (p > 0.2) respectively. In diabetic patients, mean values for heart rate changes during slow breathing were 6.1 and 5.1, and mean values for Valsalva ratio were 1.23 and 1.28 in sitting and supine postures respectively. According to our normal limits, heart rate changes during slow breathing was below normal in 109 patients tested when sitting and in 113 tested when supine, and Valsalva ratio was abnormal in 103 and 95 respectively. These results indicate that subject posture is an important variable of cardio-respiratory reflex testing, and should be standardized to allow comparisons of individual results.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009477	Hereditary Sensory and Autonomic Neuropathies	A group of inherited disorders characterized by degeneration of dorsal root and autonomic ganglion cells, and clinically by loss of sensation and autonomic dysfunction. There are five subtypes. Type I features autosomal dominant inheritance and distal sensory involvement. Type II is characterized by autosomal inheritance and distal and proximal sensory loss. Type III is DYSAUTONOMIA, FAMILIAL. Type IV features insensitivity to pain, heat intolerance, and mental deficiency. Type V is characterized by a selective loss of pain with intact light touch and vibratory sensation. (From Joynt, Clinical Neurology, 1995, Ch51, pp142-4)	HSAN,HSAN Type I,HSAN Type II,HSAN Type IV,HSAN Type V,HSN Type I,HSN Type II,Insensitivity to Pain with Anhidrosis, Congenital,Neuropathies, Hereditary Sensory and Autonomic,Pain Insensitivity with Anhidrosis, Congenital,Sensory Neuropathy, Hereditary,Sensory and Autonomic Neuropathies, Hereditary,Acroosteolysis, Giaccai Type,Acroosteolysis, Neurogenic,Congenital Insensitivity to Pain with Anhidrosis,Familial Dysautonomia, Type 2,Familial Dysautonomia, Type II,Giaccai Type Acroosteolysis,HSAN (Hereditary Sensory Autonomic Neuropathy),HSAN 1,HSAN 4,HSAN 5,HSAN I,HSAN IV,HSAN V,HSAN2,HSAN5,HSANII,Hereditary Sensory And Autonomic Neuropathy IV,Hereditary Sensory Autonomic Neuropathy, Type 1,Hereditary Sensory Autonomic Neuropathy, Type 2,Hereditary Sensory Autonomic Neuropathy, Type 4,Hereditary Sensory Autonomic Neuropathy, Type 5,Hereditary Sensory Neuropathy Type 1,Hereditary Sensory Neuropathy Type I,Hereditary Sensory Neuropathy Type Ia,Hereditary Sensory Radicular Neuropathy,Hereditary Sensory Radicular Neuropathy, Recessive Form,Hereditary Sensory and Autonomic Neuropathy 4,Hereditary Sensory and Autonomic Neuropathy Type 1,Hereditary Sensory and Autonomic Neuropathy Type 2,Hereditary Sensory and Autonomic Neuropathy Type I,Hereditary Sensory and Autonomic Neuropathy Type II,Hereditary Sensory and Autonomic Neuropathy Type IV,Hereditary Sensory and Autonomic Neuropathy Type V,Hereditary Sensory and Autonomic Neuropathy, Type 4,Hereditary Sensory and Autonomic Neuropathy, Type 5,Insensitivity to Pain, Congenital, with Anhidrosis,Neurogenic Acroosteolysis,Neuropathy Hereditary Sensory Radicular, Autosomal Dominant,Neuropathy Hereditary Sensory and Autonomic Type 1,Neuropathy, Congenital Sensory,Neuropathy, Congenital Sensory, with Anhidrosis,Neuropathy, Hereditary Sensory And Autonomic, Type I,Neuropathy, Hereditary Sensory And Autonomic, Type V,Neuropathy, Hereditary Sensory Radicular, Autosomal Dominant,Neuropathy, Hereditary Sensory Radicular, Autosomal Recessive,Neuropathy, Hereditary Sensory, Type I,Neuropathy, Progressive Sensory, Of Children,Acroosteolyses, Neurogenic,Congenital Sensory Neuropathies,Congenital Sensory Neuropathy,HSANs (Hereditary Sensory Autonomic Neuropathy),HSN Type IIs,Hereditary Sensory Neuropathies,Hereditary Sensory Neuropathy,Neurogenic Acroosteolyses,Neuropathies, Congenital Sensory,Neuropathies, Hereditary Sensory,Neuropathy, Hereditary Sensory,Sensory Neuropathies, Congenital,Sensory Neuropathies, Hereditary,Sensory Neuropathy, Congenital,Type I, HSAN,Type I, HSN,Type IV, HSAN
D011187	Posture	The position or physical attitude of the body.	Postures
D012018	Reflex	An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D003924	Diabetes Mellitus, Type 2	A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.	Diabetes Mellitus, Adult-Onset,Diabetes Mellitus, Ketosis-Resistant,Diabetes Mellitus, Maturity-Onset,Diabetes Mellitus, Non-Insulin-Dependent,Diabetes Mellitus, Slow-Onset,Diabetes Mellitus, Stable,MODY,Maturity-Onset Diabetes Mellitus,NIDDM,Diabetes Mellitus, Non Insulin Dependent,Diabetes Mellitus, Noninsulin Dependent,Diabetes Mellitus, Noninsulin-Dependent,Diabetes Mellitus, Type II,Maturity-Onset Diabetes,Noninsulin-Dependent Diabetes Mellitus,Type 2 Diabetes,Type 2 Diabetes Mellitus,Adult-Onset Diabetes Mellitus,Diabetes Mellitus, Adult Onset,Diabetes Mellitus, Ketosis Resistant,Diabetes Mellitus, Maturity Onset,Diabetes Mellitus, Slow Onset,Diabetes, Maturity-Onset,Diabetes, Type 2,Ketosis-Resistant Diabetes Mellitus,Maturity Onset Diabetes,Maturity Onset Diabetes Mellitus,Non-Insulin-Dependent Diabetes Mellitus,Noninsulin Dependent Diabetes Mellitus,Slow-Onset Diabetes Mellitus,Stable Diabetes Mellitus
D005260	Female		Females
D006339	Heart Rate	The number of times the HEART VENTRICLES contract per unit of time, usually per minute.	Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man