Fibrillation in hypothermia ventricular fibrillation. Medical search. Frequent questions

[ 4 ] Ventricular tachycardia (VT) may degenerate into VF. (medscape.com)
Atrial fibrillation and ventricular tachycardia also may occur in cases of severe hypothermia. (wildliferesearch.com)
The disadvantage to cooling was similar for patients with non-shockable (asystole and pulseless electrical activity) and shockable cardiac arrest rhythms (ventricular fibrillation and pulseless ventricular tachycardia) both for survival and neurologic outcomes ( P =0.74 and P =0.88, respectively, for interaction). (medpagetoday.com)
These precipitating factors include electrolyte abnormalities, proarrhythmic medications, alterations in the sympathetic-parasympathetic balance (particularly increased catecholamines), hypothermia or hyperthermia, primary electrical disease (eg, long QT syndrome, Brugada syndrome, catecholaminergic polymorphic ventricular tachycardia), and hypoxia/ischemia. (medscape.com)
The triggers for ventricular tachycardia are diverse. (medscape.com)
For more information, see Ventricular Tachycardia and Cardiomyopathy, Hypertrophic. (medscape.com)
Symptoms of mild hypothermia may be vague with sympathetic nervous system excitation (shivering, hypertension, tachycardia, tachypnea, and vasoconstriction). (findmeacure.com)
Pulse and respiration rates decrease significantly, but fast heart rates (ventricular tachycardia, atrial fibrillation) can occur. (findmeacure.com)
In both trials, therapeutic hypothermia significantly improved the neurological outcomes of patients with cardiac arrest in shockable rhythms (ventricular fibrillation or pulseless ventricular tachycardia). (biomedcentral.com)
Therapeutic hypothermia (TH) has been shown to improve survival and neurological outcome in patients resuscitated after out of hospital cardiac arrest (OHCA) from ventricular fibrillation/ventricular tachycardia (VF/VT). (westjem.com)
The patient had a poor outcome because the diagnosis should have been ventricular tachycardia (VT). (medscape.com)
Flecainide is used mainly for treatment and prevention of ventricular arrhythmia, paroxysmal supraventricular tachycardia, paroxysmal atrial fibrillation, and paroxysmal atrial flutter. (medscape.com)

Wilderness Medical Society Clinical Practice Guidelines for the Out-of-Hospital Evaluation and Treatment of Accidental Hypothermia: 2019 Update. (msdmanuals.com)
Hypothermia occurs when the core temperature of the body falls below 95 °F.7 The most common mechanisms of accidental hypothermia are convective heat loss to cold air and conductive heat loss to water. (health.mil)
One of the lowest documented body temperatures from which someone with accidental hypothermia has survived is in a 2-year-old boy from Poland named Adam. (theinfolist.com)

Retrospective review of clinical, imaging, and electroencephalography data of 33 adult comatose survivors of cardiac arrest following therapeutic hypothermia was performed. (ajnr.org)
1 ⇓ ⇓ ⇓ - 5 The role of MR imaging is not standardized despite relatively good sensitivity and specificity documented in studies performed before routine therapeutic hypothermia. (ajnr.org)
6 , 7 However, brain imaging and malignant EEG patterns following therapeutic hypothermia have not been comprehensively described, to our knowledge. (ajnr.org)
Therapeutic hypothermia was initiated and then rewarming done after 24 hours. (jpgmonline.com)
For in-hospital cardiac arrest, the use of therapeutic hypothermia was associated with poorer survival rates and worse neurologic outcomes, Get With The Guidelines registry data showed. (medpagetoday.com)
In a propensity-score matched analysis, therapeutic hypothermia was associated with a relative 12% lower likelihood of in-hospital survival compared with usual care (27.4% versus 29.2%, P =0.01), Paul S. Chan, MD , Saint Luke's Mid America Heart Institute in Kansas City, Mo. (medpagetoday.com)
Current use of therapeutic hypothermia for in-hospital cardiac arrest may warrant reconsideration," Chan's group concluded. (medpagetoday.com)
Therapeutic hypothermia has generally shown advantages in out-of-hospital cardiac arrest , in which the cause of cardiac arrest is more typically cardiac and response times slower than in in-hospital cases. (medpagetoday.com)
The study used Get With the Guidelines-Resuscitation registry data linked to Medicare files for 26,183 patients with in-hospital cardiac arrest, among whom 1,568 (6.0%) were treated with therapeutic hypothermia. (medpagetoday.com)
A sensitivity analysis excluding patients who died within the first 24 hours after return of spontaneous circulation suggested "that either therapeutic hypothermia was protective during the first 24 hours after return of spontaneous circulation but was not effective overall, or that any indication bias was in favor of patients treated with hypothermia," they noted. (medpagetoday.com)
The database didn't have data on comatose status (although patients were required to be on mechanical ventilation at the time of, or after, cardiac arrest as a surrogate for comatose status) or detailed data on therapeutic hypothermia protocols and treatments for each patient, such that temperature data were not available for most. (medpagetoday.com)
The possibility remains that the null findings for therapeutic hypothermia seen in this study may reflect poor implementation (e.g., insufficient duration of hypothermia), even though the median lowest achieved temperature was 33.1°C among patients treated with hypothermia for whom temperature data were available," Chan's group noted. (medpagetoday.com)
These observational findings warrant a randomized clinical trial to assess efficacy of therapeutic hypothermia for in-hospital cardiac arrest," they concluded. (medpagetoday.com)
The prevention of ischemic injury to preserve both end-organ function and improve neurological recovery by the implementation of therapeutic hypothermia has been well established in the literature. (biomedcentral.com)
The induction of therapeutic hypothermia to begin the process of body temperature lowering through the infusion of a cold solution intravenously into the body may be one variable that influences not only rapidity of cooling but also subsequent clinical outcome. (biomedcentral.com)
In a recent issue of Critical Care , Skulec and colleagues compared the induction of therapeutic hypothermia by cold normal saline versus cold colloid solution containing hydroxyethyl starch in a porcine animal model of cardiac arrest, assessing both the rate of temperature change and target temperature achieved, in addition to changes in intracranial pressure. (biomedcentral.com)
The use of therapeutic hypothermia (TH) in clinical medicine is no longer a rarity. (biomedcentral.com)
Therapeutic hypothermia, the standard for post-resuscitation care of out-of-hospital sudden cardiac arrest (SCA), is an area that the most recent resuscitation guidelines note "has not been studied adequately. (elsevierpure.com)
Therapeutic Hypothermia and Temperature Management , 9 (2), 128-135. (elsevierpure.com)
Meta-analyses of nonrandomized studies have provided conflicting data on therapeutic hypothermia, or targeted temperature management (TTM), at 33°C in patients successfully resuscitated after nonshockable cardiac arrest. (biomedcentral.com)
Nevertheless, the latest recommendations issued by the International Liaison Committee on Resuscitation and by the European Resuscitation Council recommend therapeutic hypothermia. (biomedcentral.com)
New data are available on the adverse effects of therapeutic hypothermia, notably infectious complications. (biomedcentral.com)
The risk/benefit ratio of therapeutic hypothermia after nonshockable cardiac arrest is unclear. (biomedcentral.com)
HYPERION is a multicenter (22 French ICUs) trial with blinded outcome assessment in which 584 patients with successfully resuscitated nonshockable cardiac arrest are allocated at random to either TTM between 32.5 and 33.5°C (therapeutic hypothermia) or TTM between 36.5 and 37.5°C (therapeutic normothermia) for 24 hours. (biomedcentral.com)
This process is called therapeutic hypothermia. (allinahealth.org)

Mild hypothermia requires a warm environment and insulating blankets (passive rewarming). (msdmanuals.com)
Hypothermia is typically classified as mild, moderate, or severe, depending upon measured core temperature. (physio-pedia.com)
Peripheral vasoconstriction and shivering are frequent physiological manifestations of mild hypothermia as core temperature declines to 32°C (90°F). At lower core temperatures, hyporeflexia, stupor, cessation of shivering, and muscle rigidity become evident (Knochel, 1985). (wildliferesearch.com)
Here's a free 'head-to-head' discussion with arguments for and against implementation of routine mild hypothermia for all patients with out-of-hospital cardiac arrest. (pulmccm.org)
In mild hypothermia, there is shivering and mental confusion. (theinfolist.com)
The treatment of mild hypothermia involves warm drinks, warm clothing, and voluntary physical activity. (theinfolist.com)
Symptoms of mild hypothermia principally involve the sympathetic nervous system . (allaboutheaven.org)

The authors conclude that "although hypothermia is a promising strategy to improve resuscitation and brain recovery following cardiac arrest, the results of the current study do not support routine use of cold intravenous fluid in the prehospital setting to improve clinical outcomes. (acc.org)
We conducted a two-phase study examining the role of intra-arrest hypothermia for out-of-hospital SCA, first standardizing the resuscitation and transport of patients to resuscitation centers where post-resuscitation hypothermia was required and then initiating hypothermia during out-of-hospital resuscitation efforts. (elsevierpure.com)
Cardiopulmonary resuscitation (CPR) using closed-chest cardiac massage technique was first used in 1960 by Kouwenhoven in 17 patients with cardiac asystole and 3 patients with ventricular fibrillation, with a successful resuscitation in 14 patients (70%) [ 1 ]. (hindawi.com)
Since there is no randomized trials that have evaluated the duration of resuscitation and the bulk of information regarding the duration of resuscitation in various conditions such as hypothermia relies on case series and expert opinion, we reviewed all reported cases of prolonged resuscitation in the English literature. (hindawi.com)

For related topics, see Ventricular Fibrillation in Emergency Medicine , Sudden Cardiac Death , Hypertrophic Cardiomyopathy , and Pediatric Ventricular Fibrillation . (medscape.com)

Severe hypothermia requires active rewarming of the body surface (eg, with forced-air warming systems, radiant sources) and core (eg, inhalation, heated infusion and lavage, extracorporeal blood rewarming). (msdmanuals.com)
Early recognition of these symptoms is key to preventing more severe hypothermia. (physio-pedia.com)
Reductions in heart rate, blood pressure, peripheral vascular resistance, cardiac output, and central venous pressure occur during severe hypothermia. (wildliferesearch.com)
Creatine phosphokinase (CPK) increases in the blood during severe hypothermia as a result of cellular damage. (wildliferesearch.com)
The client is diagnosed with severe hypothermia. (nclex.me)
People with moderate or severe hypothermia should be moved gently. (theinfolist.com)
In severe hypothermia, extracorporeal membrane oxygenation (ECMO) or cardiopulmonary bypass may be useful. (theinfolist.com)
Many patients have recovered from severe hypothermia, so early recognition and prompt activation of 911 is paramount. (trousdalecountytn.gov)
If the hypothermia is very severe, the person may get a near death experience. (allaboutheaven.org)
Plasma levels of flecainide should be monitored, when feasible, especially in patients with severe liver or kidney failure, severe congestive heart failure, or life-threatening ventricular arrhythmias. (medscape.com)

Hypothermia is defined as a core temperature of less than 35 degrees Celcius. (sarbc.org)
For most mammals, hypothermia is defined as a core temperature less than 35°C (95°F) (Knochel, 1985). (wildliferesearch.com)
paradoxical undressing Hypothermia is defined as a body core temperature below in humans. (theinfolist.com)
Hypothermia may be diagnosed based on either a person's symptoms in the presence of risk factors or by measuring a person's core temperature. (theinfolist.com)
Another classification system, the Swiss staging system, divides hypothermia based on the presenting symptoms which is preferred when it is not possible to determine an accurate core temperature. (theinfolist.com)
Hypothermia is a condition in which core temperature drops below the required temperature for normal metabolism and body functions which is defined as 35.0 °C (95.0 °F). Body temperature is usually maintained near a constant level of 36.5-37.5 °C (98-100 °F) through biologic homeostasis or thermoregulation . (findmeacure.com)
Hypothermia is a condition in which core temperature drops below the required temperature for normal metabolism and body functions. (allaboutheaven.org)

Signs of congestive heart failure, low cardiac output, myocarditis, abnormal heart sounds, or cholesterol deposits may indicate underlying conditions that increase the risk of serious ventricular arrhythmias. (medscape.com)

Ventricular fibrillation is usually preceded by other ventricular arrhythmias, and prevention of ventricular fibrillation may be best accomplished through prevention of those arrhythmias. (medscape.com)

One of the greatest dangers associated with hypothermia is cardiac arrhythmias, which can result in ventricular fibrillation and death, particularly at core temperatures below 28°C (82°F) (Knochel, 1985). (wildliferesearch.com)
Focus the physical examination on detection of structural heart disease because these patients may be at increased risk of malignant ventricular arrhythmias. (medscape.com)

arrest, respiratory arrest, or ventricular fibrillation without showing the etiology. (cdc.gov)

If early symptoms of hypothermia are not recognized or treated, the core body temperature will continue to decrease. (physio-pedia.com)
The signs and symptoms vary depending on the degree of hypothermia and may be divided by the three stages of severity. (findmeacure.com)

In a recent issue of Critical Care , Skulec and colleagues [ 2 ] evaluated the efficacy of cold normal saline as compared with a colloid solution containing hydroxyethyl starch in the induction of TH in survivors of cardiac arrest by using a porcine animal model of ventricular fibrillation (VF). (biomedcentral.com)

[ 5 ] the impulse can propagate erratically through the variably refractory myocardial cells and establish reentrant patterns that result in chaotic ventricular depolarization. (medscape.com)
Factors associated with an increased risk of thromboembolic events in patients with atrial fibrillation (AF) include increasing age, rheumatic heart disease, poor left ventricular function, previous myocardial infarction, hypertension and a past history of a thromboembolic event. (aafp.org)
These variables may influence myocardial susceptibility to an R-on-T phenomenon, causing depolarization of partially repolarized tissue, potentially initiating ventricular fibrillation. (medscape.com)
Young age, myocardial infarction, and potentially reversible causes of cardiac arrest such as hypothermia and pulmonary emboli predict a favorable result, especially when the arrest is witnessed and followed by prompt and good resuscitative efforts. (hindawi.com)
Di Bello infected myocardial hydatid cyst mim- right atrium is rare and potentially has and Menendez [8] reported that in icked left ventricular aneurysm. (who.int)

Identify findings compatible with hypertrophic cardiomyopathy and ventricular outflow obstructive lesions (eg, aortic stenosis). (medscape.com)

Hypothermia is the opposite of hyperthermia which is present in heat exhaustion and heat stroke. (findmeacure.com)

A 56-year-old, previously healthy male, had a ventricular fibrillation cardiac arrest and return of spontaneous circulation after 10 minutes of CPR and shocks. (jpgmonline.com)

Special care should be taken when handling animals exhibiting signs of hypothermia or respiratory distress. (wildliferesearch.com)
Left untreated, hypothermia eventually leads to complete failure of your heart and respiratory system and to death. (findmeacure.com)

Secondary hypothermia also has a significant and underrecognized effect on mortality risk in cardiovascular and neurologic disorders. (msdmanuals.com)

Ventricular fibrillation (VF) is a life-threatening cardiac arrhythmia in which the coordinated contraction of the ventricular myocardium is replaced by high-frequency, disorganized excitation, resulting in [the effective] failure of the heart to pump blood. (medscape.com)
Various factors can lead to the lowering of the ventricular fibrillation threshold and, thus, increase the likelihood of an arrhythmia proceeding to ventricular fibrillation. (medscape.com)

Ventricular fibrillation (VF) occurs in a variety of clinical situations but is most often associated with coronary artery disease (CAD). (medscape.com)
Vasoconstriction, which occurs with hypothermia, may mask hypovolemia, which then manifests as sudden shock or cardiac arrest during rewarming (rewarming collapse) when peripheral vasculature dilates. (msdmanuals.com)

Overview of Cold Injury Exposure to cold may cause decreased body temperature ( hypothermia) and focal soft-tissue injury. (msdmanuals.com)
Hypothermia is a significant drop in body temperature [below 95°F (35°C)] as the body's heat loss exceeds its production. (physio-pedia.com)
The human physiologic response to cold exposure is to retard heat loss and preserve core body temperature, but this response may not be sufficient to prevent hypothermia if heat loss is prolonged. (health.mil)

2021. Osborn Waves with Ventricular Fibrillation Caused by Hypothermia. . (cornell.edu)

In moderate hypothermia, shivering stops and confusion increases. (theinfolist.com)
In those with moderate hypothermia, heating blankets and warmed intravenous fluid s are recommended. (theinfolist.com)

Hypoglycemia is also found in many hypothermic patients because hypothermia often is a result of hypoglycemia. (findmeacure.com)

Conditions which will cause hypothermia are cold temperatures, insufficient clothing and equipment, wetness, poor nutrition, duration of the event and exposed/uncovered skin. (physio-pedia.com)
10 Freezing temperatures are not required to produce hypothermia. (health.mil)

Hypothermia is also considered the clinical state of sub-normal temperature when the body is unable to generate sufficient heat to efficiently maintain functions. (sarbc.org)
Clinical manifestations of hypothermia include locomotor incoordination, disorientation, and lethargy. (wildliferesearch.com)

The decreased demand probably accounts for the occasional survival after prolonged cardiac arrest due to extreme hypothermia. (msdmanuals.com)
Patients presenting in ventricular fibrillation were more likely to survive to hospital discharge in both phases, although a trend toward worsened early outcomes (ROSC, sustained ROSC, and survival to admission) with intra-arrest hypothermia was noted in this subgroup. (elsevierpure.com)
Multivariable regression analyses failed to demonstrate any survival benefit associated with the intra-arrest initiation of hypothermia via LVICS. (elsevierpure.com)
Our study, the largest study of intra-arrest initiation of hypothermia published to date, failed to demonstrate any effect on survival for out-of-hospital SCA patients, confirming findings of previously published smaller studies. (elsevierpure.com)
The Relationship between Time to Arrival of Emergency Medical Services (EMS) and Survival from out-of-Hospital Ventricular Fibrillation Cardiac Arrest. (nhsjs.com)

Also, hypothermia due to total immersion in near-freezing water may protect the brain from hypoxia by decreasing metabolic demands. (msdmanuals.com)
Hypothermia produces hypoxia . (allaboutheaven.org)

The term cold injuries is used to describe injuries that have a central effect, such as hypothermia, as well as injuries that primarily affect the peripheries of the body, such as frostbite and immersion injuries. (health.mil)

Hypothermia is most common during cold weather or immersion in cold water, but it may occur in warm climates when people lie immobile on a cool surface (eg, when they are intoxicated) or after very prolonged immersion in swimming-temperature water (eg, 20 to 24° C). Wet clothing and wind increase risk of hypothermia. (msdmanuals.com)
Hypothermia is most often caused by exposure to cold weather or immersion in a cold body of water. (findmeacure.com)

Metabolic acidosis and hyperkalemia may occur if hypothermia is prolonged. (wildliferesearch.com)

The physician attempted cardioversion , which led to ventricular fibrillation . (medscape.com)

They caution that the study results "should not be extended to use of other methods of hypothermia initiated in the emergency department or continued during the initial phase of postresuscitation care in the intensive care unit. (acc.org)

This pattern is coarse initially but becomes finer as ventricular disorganization increases. (medscape.com)

Twenty to fifty percent of hypothermia deaths are associated with paradoxical undressing. (findmeacure.com)

Anatomy23

Organisms7

Diseases66

Chemicals and Drugs42

Analytical, Diagnostic and Therapeutic Techniques and Equipment84

Psychiatry and Psychology1

Phenomena and Processes27

Disciplines and Occupations3

Technology, Industry, Agriculture2

Information Science11

Named Groups1

Health Care37

Geographicals1

Tachycardia12

Accidental Hypothermia3

Therapeutic25

Mild7

Resuscitation4

Pediatric Ventricular Fibrillation1

Severe10

Core temperature7

Congestive heart f1

Prevention of ventricular1

Arrhythmias2

Etiology1

SYMPTOMS2

Survivors of cardiac arrest1

Myocardial5

Hypertrophic Cardiomyopathy1

Hyperthermia1

Return of spontaneous circulation1

Respiratory2

Cardiovascular1

Arrhythmia2

Occurs2

Body temperature3

20211

Moderate2

Hypothermic patients1

Temperatures2

Clinical2

Survival5

Hypoxia2

Injuries1

Cold weather or immersion2

Occur1

Cardioversion1

Intensive Care1

Increases1

Paradoxical1