Drowning Classification: A Reappraisal of Clinical Presentation and Prognosis for Severe Cases.

BACKGROUND: Drowning is still a major cause of accidental death worldwide. In 1997, Szpilman proposed a classification of drowning that has become the reference. As considerable efforts have been made to improve prevention and care, it seemed appropriate to reassess the prognosis and clinical presentation of drowning patients more than 20 years after this first publication. The aim of this study is to provide a reappraisal of patients who need advanced health care and a precise description of their respective neurologic, respiratory, and hemodynamic profiles. METHODS: This retrospective study was conducted over four consecutive summer periods between 2014 and 2017 in ICUs located in France, French Polynesia, and the French Antilles. Patients were classified according to the drowning classification system proposed by Szpilman. RESULTS: During the study period, 312 drowning patients were admitted with severe clinical presentation (grades 2-6). All patients benefited from rapid extraction from the water (< 10 min for all) and specialized care (emergency medical services), starting from the prehospital period. Although the global hospital mortality was similar to that previously reported (18.5%), great differences existed among the severity grades. Respective grade mortalities were low for grades 2 through 5 (grade 2, 0%; grade 3, 3%; grade 4, 0%; grade 5, 2%), and the mortality for grade 6 remained similar to that previously reported (54%). These results confirmed that the occurrence of cardiac arrest after drowning is still bad prognosis. Conversely, for other grades, this study strengthens the importance of specialized intervention to interrupt the drowning process. CONCLUSIONS: On the basis of these results, drowning-related cardiac arrest is still the prognosis cornerstone. For other victims, the prognosis was better than previously expected, which strengthens the importance of specialized intervention to interrupt the drowning process.

[First therapy of drowning accident]. / Ertrinkungsunfälle - Präklinische und klinische Behandlungsstrategien.

Rescue and medical care of people in a drowning accident is a rather rare incident which still needs special attention. The rescue process can be technically challenging and only a well experienced team will be able to act professionally without any time loss. At a first step all team members have to protect themselves. Especially close collaboration of technical and medical rescue teams are of high significance and should be part of future exercises. Hypothermic persons should be protected from further cooling and gently rescued in a horizontally way. If a patient has no circulation continued cardiopulmonary resuscitation and immediate transport as soon as possible to the nearest hospital with an extracorporeal rewarming device is recommended. To avoid any time loss it is essential that the respective hospital is informed immediately and the fastest mode of transport selected. Astonishing cases show that this procedure is very promising even after long time submersion.

Clinical and radiologic features of pulmonary edema.

Pulmonary edema may be classified as increased hydrostatic pressure edema, permeability edema with diffuse alveolar damage (DAD), permeability edema without DAD, or mixed edema. Pulmonary edema has variable manifestations. Postobstructive pulmonary edema typically manifests radiologically as septal lines, peribronchial cuffing, and, in more severe cases, central alveolar edema. Pulmonary edema with chronic pulmonary embolism manifests as sharply demarcated areas of increased ground-glass attenuation. Pulmonary edema with veno-occlusive disease manifests as large pulmonary arteries, diffuse interstitial edema with numerous Kerley lines, peribronchial cuffing, and a dilated right ventricle. Stage 1 near drowning pulmonary edema manifests as Kerley lines, peribronchial cuffing, and patchy, perihilar alveolar areas of airspace consolidation; stage 2 and 3 lesions are radiologically nonspecific. Pulmonary edema following administration of cytokines demonstrates bilateral, symmetric interstitial edema with thickened septal lines. High-altitude pulmonary edema usually manifests as central interstitial edema associated with peribronchial cuffing, ill-defined vessels, and patchy airspace consolidation. Neurogenic pulmonary edema manifests as bilateral, rather homogeneous airspace consolidations that predominate at the apices in about 50% of cases. Reperfusion pulmonary edema usually demonstrates heterogeneous airspace consolidations that predominate in the areas distal to the recanalized vessels. Postreduction pulmonary edema manifests as mild airspace consolidation involving the ipsilateral lung, whereas pulmonary edema due to air embolism initially demonstrates interstitial edema followed by bilateral, peripheral alveolar areas of increased opacity that predominate at the lung bases. Familiarity with the spectrum of radiologic findings in pulmonary edema from various causes will often help narrow the differential diagnosis.

Near-drowning and drowning classification: a proposal to stratify mortality based on the analysis of 1,831 cases.

STUDY OBJECTIVE: To establish an updated classification for near-drowning and drowning (ND/D) according to severity, based on mortality rate of the subgroups. MATERIALS AND METHODS: We reviewed 41,279 cases of predominantly sea water rescues from the coastal area of Rio de Janeiro City, Brazil, from 1972 to 1991. Of this total, 2,304 cases (5.5%) were referred to the Near-Drowning Recuperation Center, and this group was used as the study database. At the accident site, the following clinical parameters were recorded: presence of breathing, arterial pulse, pulmonary auscultation, and arterial BP. Cases lacking records of clinical parameters were not studied. The ND/D were classified in six subgroups: grade 1--normal pulmonary auscultation with coughing; grade 2--abnormal pulmonary auscultation with rales in some pulmonary fields; grade 3--pulmonary auscultation of acute pulmonary edema without arterial hypotension; grade 4--pulmonary auscultation of acute pulmonary edema with arterial hypotension; grade 5--isolated respiratory arrest; and grade 6--cardiopulmonary arrest. RESULTS: From 2,304 cases in the database, 1,831 cases presented all clinical parameters recorded and were selected for classification. From these 1,831 cases, 1,189 (65%) were classified as grade 1 (mortality=0%); 338 (18.4%) as grade 2 (mortality=0.6%); 58 (3.2%) as grade 3 (mortality=5.2%); 36 (2%) as grade 4 (mortality=19.4%); 25 (1.4%) as grade 5 (mortality=44%); and 185 (10%) as grade 6 (mortality=93%) (p<0.000001). CONCLUSION: The study revealed that it is possible to establish six subgroups based on mortality rate by applying clinical criteria obtained from first-aid observations. These subgroups constitute the basis of a new classification.

Outcome and acute care hospital costs after warm water near drowning in children.

OBJECTIVE: Predictive efforts using individual factors or scoring systems do not adequately identify all intact survivors, and therefore all drowning victims are aggressively resuscitated in most emergency departments. More reliable outcome prediction is needed to guide early treatment decisions. METHODS: The charts of 274 near drowning patients admitted to Loma Linda University Children's Hospital were retrospectively reviewed. Patient outcome was categorized into good (near normal function), and poor (vegetative or dead) categories. Discriminant analysis was used to identify combinations of variables most able to predict outcome and a clinical classification system was constructed. The acute care hospital costs for each group were compared. RESULTS: Discriminant analysis classification achieved 95% accuracy, predicting death in 6 intact survivors. No combination of variables could accurately separate all intact survivors from the vegetative and dead groups. The clinical classification method achieved 93% overall accuracy, predicting death in 5 intact survivors. Of patients predicted to have a poor outcome, 5 (6.3%) survived intact. Children may experience an unpredictable, prolonged vegetative state followed by full recovery. Vegetative patients are the most expensive to care for (consuming 53% of total costs) while intact survivors are the least expensive. The majority of costs were spent on patients with poor outcome. CONCLUSIONS: Individual outcome cannot be reliably predicted in the emergency department; therefore, aggressive resuscitation of near drowning victims should be performed. Decisions to subsequently withdraw life support should be made based on integration of likelihood of survival, high (but not absolute) certainty, and parental/societal issues. The vegetative patients are the most expensive to care for, while intact survivors are least expensive. Reduction of expenditures on patients likely to have vegetative or dead outcome would result in substantial savings, but loss of normal survivors.

Failure of aggressive therapy to alter outcome in pediatric near-drowning.

OBJECTIVES: To identify predictors of outcome in pediatric near-drowning victims, and to measure the effectiveness of therapy in pediatric near-drowning victims by assessing clinical outcome as a function of injury severity at presentation and therapeutic interventions during hospitalization. DESIGN: Retrospective chart review at a tertiary care university associated Children's Hospital from January 1976 to July 1992. MEASUREMENTS AND MAIN RESULTS: Initial intensive care unit (ICU) assessment included a Glasgow Coma Score (GCS) and a Pediatric Risk of Mortality (PRISM) Score. Outcome was assessed using a standard scoring system classifying functional abilities at hospital discharge as no functional disability, independent, partially independent, or total dependence on caregivers for function. Forty (49%) of 81 died. Of the survivors, 26 (63%) had no functional disability or were partially dependent at hospital discharge. Of the 47 (64%) patients with a GCS < or = 4 on presentation to the ICU, 37 (79%) died and 10 (21%) were dependent in all areas of function at discharge. Of the 40 (60%) patients who had a PRISM score < 20, 98% either died or were completely dependent at discharge. Of the 49 patients who were asystolic upon arrival to the emergency department (ED), 76% died, and the rest were completely dependent. Logistic regression showed that therapy had no independent effect on outcome when disease severity was accounted for. CONCLUSIONS: Severity of illness measured by GCS and PRISM score in the ICU can be useful in predicting outcome. For patients cared for in a Pediatric Intensive Care Unit, those with asystole on arrival at the ED had uniformly poor outcome. Currently available therapies do not alter outcome.

Pulmonary oedema, pneumonia and mortality in submersion victims; a retrospective study in 125 patients.

OBJECTIVE: The identification of risk factors contributing to the development of pulmonary oedema, pneumonia and late mortality in submersion victims. DESIGN: A retrospective study of 125 submersion victims. SETTING: The medical intensive care unit in a university hospital. METHODS: Baseline examination on admission consisted of history, physical examination, arterial blood gas analysis and a chest radiograph. Patients were then classified into four groups: class I, baseline examination negative; class II, baseline examination positive, but mechanical ventilation not needed on admission; class III, mechanical ventilation required on admission; class IV, patients suffering from cardiopulmonary arrest. All patients who were not successfully resuscitated or who had expired within 24 h after admission were excluded for determination of the risk of pulmonary oedema and pneumonia. RESULTS: Class I patients did not develop pulmonary complications; neither pulmonary oedema nor pneumonia occurred in this group. In the remaining classes the incidence of pulmonary oedema was 72% and that of pneumonia, 14.7%. Stepwise logistic regression showed that pulmonary oedema was related to the type of water (seawater, ditch water, swimming pool) victims were submerged in and to the neurological state both at the time of rescue and on admission. The development of pneumonia was related to the use of mechanical ventilation (the risk was 52%). Pneumonia was not related to neurological state at the time of rescue or on admission, to body temperature on admission, to the prophylactic administration of antibiotics or to the use of corticosteroids. Mortality was high in class IV patients, but low in all other patients. Early mortality was 18.4% while late mortality was 5.6%. CONCLUSIONS: There is no need to hospitalise submersion victims when there are no signs or symptoms of aspiration upon arrival in the emergency room. All other patients should be admitted to an intensive care unit. The risk of pneumonia is high when mechanical ventilation is necessary. Mortality is high in patients with circulatory arrest on admission, but low in all other patients.

Accidentes por inmersión: ahogamiento y casi-ahogamiento: presentación de 38 casos

Los accidentes por inmersión se presentan en más de 8.000 personas por año en los Estados Unidos. La verdadera incidencia del casi-ahogamiento todavía no se ha precisado, pero se supone que es dos a 10 veces mayor que el número real de ahogados que se públican. En nuestro medio la situación es más complicada ya que no existen estudios que definan la magnitud del problema. En el presente trabajo se revisaron las historias clínicas de 38 pacientes, con accidentes por inmersión en agua salada, manejados en el Hospital Universitario de Cartagena y en el Hospital Bocagrande durante los últimos dos años. Se trataba de 23 hombres (65 por ciento) y 15 mujeres (35 por ciento), con una edad promedio (x) de 18.5 años. El tiempo de inmersión fue, en promedio, de 18.1 (s=16.89) minutos. En 12 pacientes se practicaron maniobras de Reanimación Cardiopulmonar; en 9 fueron exitosas y la duración de tales maniobras fue de 26.6 (s=12.1) minutos. Al ingreso los signos vitales en promedio fueron: frecuencia cardíaca de 117 (s=14.3), frecuencia respiratoria de 31.5 (s=7.5), presión arterial media de 59.2 (s=9.6). El ionograma fue normal; con un sodio sérico de 139 (s=3.4) y Potasio de 3.9 (s=0.3). 10 pacientes ingresaron a la Unidad de Cuidado Intensivo y tuvieron una estancia en ella de 3.6 (s=1.3) días. De estos pacientes 6 requirieron Ventilación Mecánica durante 1.5 (0.5) días. Ningún paciente recibió corticoides y sólo 5 recibieron antibióticos, y en todos los casos se hicieron con la indicación de "profilaxis". No se presentaron infecciones en los pacientes que no recibieron antibióticos. De la presente revisión podemos resumir que: 1: No hay justificación para el uso de esteroides o antibióticos profilácticos en este tipo de pacientes. 2. Las alteraciones electrolíticas no son tan frecuentes ni severas como se consideraba. 3. Si bien el tiempo de inmersión fue prolongado, la eficacia y rapidez de la reanimación y la respuesta neurológica inicial son los mejores parámetros para establecer pronóstico en casiahogamiento. " La desición de reanimar un paciente con accidente de inmersión es ética más que médica y si existe la posibilidad de salvar una vida, el número de fracasos es una situación específica no debe ser tenido en cuenta". 4. Las medidas preventivas son primordiales para reducir la morbimortalidad derivada de los accidentes por inmersión.

Caring for the victim of near drowning.

If no complications arise, the near-drowning victim is usually discharged within 48 hours. However, some patients require complex care because of multisystem failure. These patients challenge the critical care nurse, who must understand the interrelationships of the problems to provide quality care. The major focus of care is stabilization and normalization of the cardiovascular, respiratory and neurologic systems through accurate nursing assessments and implementation of appropriate nursing care.