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Heat Tetany

Hyperventialtion is an abnormally increased pulmonary ventilation, leading to abnormal loss of carbon dioxide from the blood.


  • In other situations the symptoms of hyperventilation are pivotal to the clinical presentation of the patients.[thorax.bmj.com]
  • When either signs of transtentorial herniation or progressive neurological deterioration not attributable to extracranial explanations are present, however, the physician should assume that intracranial hypertension is present and treat it aggressively[health.ny.gov]
  • Chronic HVS can present with a myriad of respiratory, cardiac, neurologic, or gastrointestinal (GI) symptoms without any clinically apparent overbreathing by the patient.[emedicine.medscape.com]
  • At present, it is thought that HVT is an indicator of damage to the vestibular nerve or central vestibular pathways.[dizziness-and-balance.com]
  • Hyperventilation which may also occur as part of dysfunctional breathing in those with asthma. [ 4 ] The remainder of this article will concentrate on hyperventilation as it may present in the community.[patient.info]
Carpopedal Spasm
  • In extreme cases it may cause carpopedal spasms , a flapping and contraction of the hands and feet. [3] [4] Factors that may induce or sustain [2] hyperventilation include: physiological stress , anxiety or panic disorder , high altitude , head injury[en.wikipedia.org]
  • spasm Type 1 Excludes hysterical tetany ( F44.5 ) neonatal tetany ( P71.3 ) parathyroid tetany ( E20.9 ) post-thyroidectomy tetany ( E89.2 ) hyperpnea R06.4 hyperventilation R06.4 - see also Hyperventilation ICD-10-CM Codes Adjacent To R06.4 R06 Abnormalities[icd10data.com]
Muscle Twitch
  • If you are experiencing these symptoms, you may be chronically hyperventilating : dizziness & light-headedness breathlessness a sense of unreality increased and/or irregular heartbeat numbness, tingling, or cold in the hands and feet muscle twitching[overcomingyouranxiety.net]
  • , twitching and cramps, tension and panicky feelings, depression and anxiety.[healthnavigator.org.nz]
  • twitching Many different factors can cause chest symptoms with hyperventilation syndrome.[emedicinehealth.com]
Chvostek Sign
  • Chvostek's sign is also due to hypocalcaemia. Flick behind the ear, just in front of the mastoid bone where the facial nerve emerges. The hypersensitive facial nerve makes the muscles of the face twitch.[patient.info]
  • Hyperventilation syndrome is one of the most common causes of dizziness in the general population, accounting for up to 25 percent of dizziness complaints. 1,2,7 Hyperventilation syndrome may present a diagnostic challenge to the chiropractic physician[dynamicchiropractic.com]
  • Caution: known as the great mimic, some h yperventilation syndrome symptoms such as chest pain, dizziness and shortness of breath need checking by your doctor to rule out serious events.[healthnavigator.org.nz]
  • This makes the blood lose more carbon dioxide than usual, which can make them feel weak and dizzy. As they begin to breathe normally again, they should feel better.[sja.org.uk]
  • May cause dizziness and tingling of toes and fingers and chest pain if continued. Also called overbreathing .[medical-dictionary.thefreedictionary.com]
  • Hyperventilation causes dizziness , lightheadedness, a sense of unsteadiness, and tingling around the mouth and fingertips.[medicinenet.com]
  • THE hyperventilation syndrome, as seen in anxious, tense persons, is characterized by paresthesia of the extremities and circumoral area, sensations of lightheadedness and altered consciousness and occasionally carpal spasm.[nejm.org]
  • […] containing a vasoconstrictor congruent with the patient’s functional capacity Signs and symptoms: Frequent ( 20 breaths/min), prolonged sighing inspiration Dyspnea Sometimes so severe that the patient feels like suffocating Light-headedness and dizziness Paresthesia[dentalcare.com]
  • The most commonly noted symptoms of hyperventilation syndrome are an ill-defined lightheadedness associated with perioral and digital paresthesias, tightness in the chest, a lump in the throat, sweating, trembling, palpitations, and possible ringing in[dynamicchiropractic.com]
  • Symptoms such as shortness of breath, "empty-head" feeling, dizziness, paresthesias and tachypnea have been described in the psychiatric and respiratory physiology related to panic disorder.[scielo.br]
  • With hyperventilation, CO2 levels drop in the blood resulting in reduced blood flow to the brain and associated weakness, fainting, dizziness, confusion, agitation, and feeling like you can't breathe.[empowher.com]
  • After surgery, or illness, or prolonged social or physical stress Symptoms Acute Attack - agitation, rapid upper chest breathing and heart-rate, chest pains, shortness of breath, nausea, tingling dizziness, clammy hands, dilated pupils, perhaps fainting[healthnavigator.org.nz]
  • This lower level of carbon dioxide reduces blood flow to the brain, which may result in the following nervous system and emotional symptoms: Weakness Fainting Dizziness Confusion Agitation A feeling of being outside yourself Seeing images that aren't[emedicinehealth.com]
Upbeat Nystagmus
  • Almost nobody gets upbeating nystagmus or torsional nystagmus after hyperventilation (if they are normal), although this can happen rarely in persons with 8th nerve injury (such as acoustic neuromas).[dizziness-and-balance.com]
Panic Attacks
  • On the basis of the Diagnostic Symptom Questionnaire, a panic attack was defined as the following: 1) four or more symptoms of a panic attack from DSM-IV; 2) at least one of the cognitive symptoms of a panic attack from DSM-IV (e.g. fear of dying or of[scielo.br]
  • Next, how a panic attack causes the brain to behave in a certain way… Part 5: The Brain and Panic Attacks: 'Emotional Hijacking' »[panic-attacks.co.uk]
  • Hyperventilation is normally associated with anxiety or panic attacks, but it can be much more.[empowher.com]
  • Thinking About Breathing – Many people with panic attacks tend to think about their own breathing.[calmclinic.com]
  • You may hyperventilate from an emotional cause such as during a panic attack. Or, it can be due to a medical problem, such as bleeding or infection. Your health care provider will determine the cause of your hyperventilation.[nlm.nih.gov]


  • […] and complaints not exclusively associated with hypocapnia”.[thorax.bmj.com]
  • Abstract The aim of this review was to consider the effects of induced hypocapnia both on systemic physiology and on the physiology of the intracranial system.[ncbi.nlm.nih.gov]
  • Hyperventilation (a.k.a. overbreathing ) occurs when the rate or tidal volume of breathing eliminates more carbon dioxide than the body can produce. [1] [2] [3] This lowers the concentration of carbon dioxide dissolved in the blood leading to hypocapnia[en.wikipedia.org]
  • Low P CO 2 ( hypocapnia ) can give rise to symptoms.[medical-dictionary.thefreedictionary.com]
Streptococcus Pneumoniae
  • Pneumonia : Pneumonia is an infection of the lung by the Streptococcus pneumoniae bacteria. COPD, smoking, brain disorders, immune system problems, or sometimes even a surgery can increase the chances of being infected by pneumonia.[thehealthsite.com]


  • Both treatment programs were equally effective in reducing symptoms, said Meuret. But CART was the only treatment to physiologically alter panic symptoms by actively reversing hyperventilation in the patients.[medicalnewstoday.com]
  • Treatment for hyperventilation depends on the cause. Home treatment is usually all that is needed for mild hyperventilation symptoms.[myhealth.alberta.ca]
  • Your doctor can help you get to the root of the problem and find an appropriate treatment.[healthline.com]
  • Continued Symptoms to watch for during home treatment Call your doctor if any of the following occur during home treatment: Symptoms do not improve with home treatment measures. Symptoms become more severe or frequent.[webmd.com]


  • Prognosis Prognosis is generally good but will depend on the underlying cause and comorbidity. [ 12 ] Management of associated disorders (such as agoraphobia) will alter the course of the hyperventilation.[patient.info]
  • Hyperventilation Prognosis With appropriate training, a person may use stress -reduction techniques, breathing exercises, and certain medications to reduce the number and severity of the hyperventilation attacks.[emedicinehealth.com]
  • Prognosis Patients with chronic HVS experience multiple exacerbations throughout their lives. Children who experience acute HVS often continue this pattern into adulthood.[emedicine.medscape.com]


  • W. , “The etiology of effort syndrome” , Amer. J. med. Sci. , 1938 , 196 , 840 . Stead , E. A. , and Warren , J. V. , “The role of hyperventilation in the production, diagnosis and treatment of certain anxiety symptoms” , Amer. J. med.[bjp.rcpsych.org]
  • Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'.[icd10data.com]
  • Etiology The cause of HVS is unknown, but some persons who are affected appear to have an abnormal respiratory response to stress, sodium, lactate, and other chemical and emotional triggers, which results in excess minute ventilation and hypocarbia.[emedicine.medscape.com]


  • Epidemiology It is quite common but precise prevalence is unknown.[patient.info]
  • […] asthma status was seen to significantly influence the probability of HVS occurrence, with the ORs for HVS in adolescents with lifetime asthma, current episodic asthma, and current active asthma calculated as 11.2, 8.9, and 41.5, respectively. [ 4 ] Epidemiology[emedicine.medscape.com]
Sex distribution
Age distribution


  • However, the underlying pathophysiology has not been clearly elucidated.[emedicine.medscape.com]
  • Gardner, WN The pathophysiology of hyperventilation disorders Chest 109; 516-534, 1996.[wellnesstips.ca]
  • Amongst pathophysiological causes, tachypnea can be a symptom of sepsis , compensation for diabetic ketoacidosis or other metabolic acidosis , pneumonia , pleural effusion , carbon monoxide poisoning , pulmonary embolism , asthma , COPD , laryngospasm[en.m.wikipedia.org]


  • What to Do to Prevent Hyperventilation Hyperventilation is both caused by and causes anxiety attacks, so if you can stop hyperventilating, you can potentially reduce the severity of your panic attacks and possibly prevent them altogether.[calmclinic.com]
  • Examples of medications for hyperventilation include: alprazolam (Xanax) doxepin (Silenor) paroxetine (Paxil) Preventing hyperventilation You can learn breathing and relaxation techniques to help prevent hyperventilation.[healthline.com]
  • Coping with stressful situations Findings ways to cope with stress usually helps to prevent symptoms and there are various strategies you can use.[medic8.com]
  • You will be given clot dissolving medication and then blood thinners to prevent formation of new clots.[thehealthsite.com]
  • Inhaling from the bag should be briefly interrupted approximately every 30 seconds to prevent hypoxia. Individual clinically clean packaging, non-sterile Latex-free Shelf life: 5 years[asid-bonz.de]

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